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Littérature scientifique sur le sujet « Plants, Effect of zinc on »

Auteur : Grafiati
Publié le 4 juin 2021
Mis à jour le 28 janvier 2023

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Articles de revues sur le sujet "Plants, Effect of zinc on"

1

Tito, Gilvanise Alves, Lúcia Helena Garófalo Chaves et Ana Carolina Feitos de Vasconcelos. « Acúmulo e translocação de cobre e zinco em plantas de Crambe abyssinica ». Revista Verde de Agroecologia e Desenvolvimento Sustentável 11, no 4 (15 novembre 2016) : 12. http://dx.doi.org/10.18378/rvads.v11i4.4539.

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Crambe (Crambe abyssinica) é uma cultura promissora para a produção de biodiesel. No entanto, não há muita informação disponível sobre as técnicas e pesquisas sobre o melhor desempenho em diferentes regiões para explorar o seu potencial. Objetivou-se avaliar o efeito de cobre e zinco no acúmulo e distribuição destes elementos nesta planta. O estudo foi realizado em casa de vegetação e constou de dois experimentos independentes, em delineamento experimental inteiramente casualizado, com três repetições. Em um deles, os tratamentos consistiram em cinco doses de cobre, ou seja, 0, 10, 15, 20 e 25 mg kg-1 e no outro , cinco doses de zinco, 0, 20, 30, 40 e 50 mg kg-1. Após 100 dias de germinação as plantas foram colhidas e avaliadas os níveis de cobre e zinco em tecidos de plantas. Os dados foram submetidos à análise de variância e comparação de médias pelo teste de Tukey a 1 e 5% de significância. Os teores de cobre e zinco aumentaram significativamente na fitomassa do crambe em função da aplicação destes elementos no solo. Os acúmulos de cobre e zinco nas plantas de crambe obedeceram às seguintes ordens, respectivamente: raiz > parte aérea; parte aérea > raiz. O índice de translocação do zinco foi maior que a do cobre nas plantas de crambe.Content and translocation of copper and zinc in plant Crambe abyssinicaAbstract: Crambe is a promising crop for biodiesel production. However, there is no much information available about techniques and research regarding the best performance in different regions to explore its potential. The objective of this study was to evaluate the effect of copper and zinc in the accumulation and distribution of these elements in this plant. The study was carried out in a greenhouse and it consisted of two independent experiments in completely randomized design, with three replications. Two metals with five levels were applied: 0, 10, 15, 20 and 25 mg∙kg−1 for copper and 0, 20, 30, 40 and 50 mg∙kg−1 for zinc. After 100 days of germination the plants were harvested and assessed the levels of copper and zinc in plant tissues. Data were subjected to analysis of variance and comparison of means by Tukey test at 1 and 5% significance. Copper and zinc content increased significantly in the biomass of crambe due to the application of these elements in the soil. Copper and zinc accumulation in crambe plants followed the following orders, respectively: root> shoot; shoot> root. The zinc translocation ratio was higher than that of copper in crambe plants.
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Serikbai, Arailym, Aidar Aitkulov, Asylbek Zeinidenov et Wojciech Pusz. « Influence of zinc nanoparticles on the development of sprouts of Avena sativa and Pisum sativum plants ». Bulletin of the Karaganda University. “Biology, medicine, geography Series” 104, no 4 (30 décembre 2021) : 78–84. http://dx.doi.org/10.31489/2021bmg4/78-84.

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The research aim is to study the effect of zinc nanoparticles on morphological parameters of sprouts of monocotyledonous and dicotyledonous plants (Avena sativa, Pisum sativum) during its accumulation in the environment. In laboratorial conditions of the experiment, it was found peculiar features of various concentrations of nanoparticles. It was specified the multidirectional effect of zinc macro- and nanoparticles onto growth rate, green weight of both aboveground and underground parts, as well as species related effect. Authors of the article identified concentrations of macro- and nanoparticles trigger permanent biological response on the experimental plants. A stable stimulating effect of zinc nanoparticles on all indicators of growth and development of pea seedlings at the concentration of 20 mg per 100 ml was revealed. A similar effect was found in oat seedlings which were exposed to zinc nanoparticles at the concentration of 5 mg per 100 ml. The effects of zinc macro- and nano-particles on plants were manifested differently.
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Wyszkowska, J., A. Borowik, J. Kucharski, M. Baćmaga, M. Tomkiel et E. Boros-Lajszner. « The effect of organic fertilizers on the biochemical properties of soil contaminated with zinc ». Plant, Soil and Environment 59, No. 11 (7 novembre 2013) : 500–504. http://dx.doi.org/10.17221/537/2013-pse.

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This study evaluates the effectiveness of organic fertilizers in restoring the homeostasis of soils contaminated with zinc. The activity of selected enzymes participating in the transformation of carbon, nitrogen, phosphorus and sulfur and the sensitivity of white mustard plants to zinc were analyzed. A greenhouse pot experiment was carried out. Uncontaminated soil served as control. Six organic substances which potentially neutralize the adverse effects of zinc were used: tree bark, finely ground barley straw, pine sawdust, cattle manure, compost and cellulose. It was found that in less contaminated soil (300 mg Zn<sup>2+</sup>/kg), all of the analyzed organic substances minimized zinc adverse effects on the biochemical properties of soil, including the activity of dehydrogenases, catalase, urease, acid phosphatase, alkaline phosphatase, &beta;-glucosidase and arylsulfatase. In more contaminated soil (600 mg Zn<sup>2+</sup>/kg), the negative consequences of zinc pollution were effectively mitigated only by cellulose, barley straw and manure. Cellulose had the highest soil restoration potential, as demonstrated by resistance indicator values for different enzymes. Cellulose, compost, manure and straw increased the resistance of white mustard plants to zinc, but only in treatments contaminated with 300 mg Zn<sup>2+</sup>/kg. Bark and sawdust potentiated zinc toxic effects on mustard plants.
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Zewide, Israel, et Abde Sherefu. « Review Paper on Effect of Micronutrients for Crop Production ». Nutrition and Food Processing 4, no 7 (13 novembre 2021) : 01–08. http://dx.doi.org/10.31579/2637-8914/063.

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Micronutrients are essentially as important as macronutrients to have better growth, yield and quality in plants. There requirement by plants is in trace amounts. Boron, iron, copper, zinc, manganese, magnesium and molybdenum constitute main micronutrients required by different crops in variable quantities. The requirement of micronutrients is partly met from the soil or through chemical fertilizer or through other sources. Various physical and metabolic functions are governed by these mineral nutrients. Boron is particularly essential in pollen germination, copper plays major role in photosynthesis and increases sugar content in fruits, chlorophyll synthesis and phosphorus availability is enhanced by manganese, iron acts as an oxygen carrier and promotes chlorophyll formation, while, zinc aids plant growth hormones and enzyme system. Yield and quality of agricultural products increased with micronutrients application, therefore human and animal health is protected with feed of enrichment plant materials. Each essential element only when can perform its role in plant nutrition properly that other necessary elements are available in balanced ratios for plant. therefore in the plant manganese plays an important role on oxidation and reduction processes, as electron transport in photosynthesis. Manganese deficiency has very serious effects on non-structural carbohydrates, and roots carbohydrates especially. Crops quality and quantity decreased due to manganese deficiency, and this is due to low fertility of pollen and low in carbohydrates during grain filling. In the xylem routes zinc is transmitted to divalent form or with organic acids bond. In the phloem sap zinc makes up complex with organic acids with low molecular weight, and increases its concentration. Zinc deficiency can be seen in eroded, calcareous and weathering acidic soils. Zinc deficiency is often accompanied with iron deficiency in calcareous soils. Iron in the soil is the fourth abundant element on earth, but its amount was low or not available for the plants and microorganisms needs, due to low solubility of minerals containing iron in many places the world, especially in arid region with alkaline soils.
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Basha, S. Anvar, et M. Selvaraju. « Toxic Effect of Zinc on Growth and Nutrient Accumulation of Cow Pea (Vigna unguiculata L.) ». International Letters of Natural Sciences 43 (juillet 2015) : 48–53. http://dx.doi.org/10.18052/www.scipress.com/ilns.43.48.

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Zinc is a heavy metal; this element is considered as environmental hazard.Toxicity effects of Zinc on growth and development of plants including inhibition of germination process decrease of growth and biomass of plant. The aim of this research is to study accumulation of Zinc along with nutrients and its effect on the growth of Cow pea plant (Vignaunguiculata.L). Thus, cow pea seedlings grown in petriplates lined with filter paper undergoing, different treatments of Zinc (control, 10, 25, 50, 75, 100, 150 and 200 ppm). After one week seedlings were removed and morpho physiological parameters like root length, shoot length and dry weight of plants and accumulation of nutrients along with Zinc in roots and shoots were determined. The results indicated that the concentrations more than Zinc 50 mg/L zinc cause the reduction of morphophysiology parameters in the treatment plants rather than control plant and zinc addition in the cultures caused enhancement of zinc content in roots and shoots of cow pea seedlings. Similarly nutrient accumulation also affected by increasing concentrations of cow pea. It was also noted that accumulation of zinc in the roots was much higher than the shoots of the seedlings under treatment.
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Basha, S. Anvar, et M. Selvaraju. « Toxic Effect of Zinc on Growth and Nutrient Accumulation of Cow Pea (<i>Vigna unguiculata</i> ; L.) ». International Letters of Natural Sciences 43 (22 juillet 2015) : 48–53. http://dx.doi.org/10.56431/p-6tf03z.

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Zinc is a heavy metal; this element is considered as environmental hazard.Toxicity effects of Zinc on growth and development of plants including inhibition of germination process decrease of growth and biomass of plant. The aim of this research is to study accumulation of Zinc along with nutrients and its effect on the growth of Cow pea plant (Vignaunguiculata.L). Thus, cow pea seedlings grown in petriplates lined with filter paper undergoing, different treatments of Zinc (control, 10, 25, 50, 75, 100, 150 and 200 ppm). After one week seedlings were removed and morpho physiological parameters like root length, shoot length and dry weight of plants and accumulation of nutrients along with Zinc in roots and shoots were determined. The results indicated that the concentrations more than Zinc 50 mg/L zinc cause the reduction of morphophysiology parameters in the treatment plants rather than control plant and zinc addition in the cultures caused enhancement of zinc content in roots and shoots of cow pea seedlings. Similarly nutrient accumulation also affected by increasing concentrations of cow pea. It was also noted that accumulation of zinc in the roots was much higher than the shoots of the seedlings under treatment.
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7

Yläranta, Toivo. « Effect of road traffic on heavy metal concentrations of plants ». Agricultural and Food Science 4, no 1 (1 janvier 1995) : 35–48. http://dx.doi.org/10.23986/afsci.72610.

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The concentrations of zinc, copper, lead, cadmium and nickel in spring wheat grain and straw, Italian rye grass and lettuce were studied in a two-year field experiment conducted alongside two roads with a daily traffic density of 9500 and 5500 vehicles each. The experimental plots were located 22, 58 and 200 m from the roads. As controls, polyethylene pots filled with non-contaminated soil were placed in each plot. The values for the bulk deposition of lead were 50% and those for dry deposition over 50% higher in the plot 22 m from the roadside than in the plot 200 m from the roadside. The bulk deposition of zinc also decreased slightly with distance from the road. Cadmium depositions were low at all experimental sites. The highest values for dry deposition of lead and cadmium were recorded when the wind blew from the road in the direction of the collectors. The heavy metal concentrations varied from plant to plant but for a particular species were similar at different experimental sites. The highest zinc, cadmium and nickel concentrations were measured in lettuce. The lead concentration of wheat straw, Italian rye grass and lettuce at 22 m from the roadside was 1.5-3 times that of the background level at 200 m. In wheat grain, the lead concentration was very low and did not change with distance from the road. The plants took up lead mainly from air deposition. The zinc concentration of wheat grain and the nickel concentration of Italian rye grass were also high. Cadmium concentrations were low in wheat grain and straw and in rye grass. In wheat, the zinc and copper concentrations were higher and the lead and cadmium concentrations much lower in grain than in straw.
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Hernandez, Jorge David, et Randy Killorn. « Phosphorus fertilizer by-product effect on the interaction of zinc and phosphorus in corn and soybean ». Canadian Journal of Soil Science 89, no 2 (1 mai 2009) : 189–96. http://dx.doi.org/10.4141/cjss07069.

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The application of high phosphorus fertilizer by-products to farmland is a common practice used to reduce storage volume and disposal cost. However, because Iowa soils are generally high in both phosphorus and zinc, there are environmental and fertility questions concerning their application to farmland. A greenhouse study was conducted to determine the effect of a soil-applied fertilizer by-product on the zinc-phosphorus relationship in corn and soybean plants grown on three Iowa soil series: Belinda, Downs, and Haig. The soils were mixed with a high-phosphorus fertilizer by-product and plants were also collected and analyzed for phosphorus and zinc content and uptake. Soil samples were analyzed for phosphorus and zinc content. The experiment was repeated, switching pots to assess the residual effect after one cycle of rotation. The treatments were arranged in a totally randomized design with three replications. The results indicated that the high phosphorus fertilizer by-product increased soil and plant concentrations of phosphorus in soybean and corn plants and soils. However, the increase of P concentration did not induce changes in the phosphorus-zinc interaction in corn and soybean plants in any of the studied soils. Key words: Phosphorus, corn, soybean, zinc, sludge, by-products, Zn-P relationship, zinc-phosphorus interaction
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Ionova, L. P., Zh A. Vilkova, R. A. Arslanova, A. S. Babakova et M. Yu Anishko. « The trace elements influence on the tomato plants heat resistance in arid climate ». IOP Conference Series : Earth and Environmental Science 843, no 1 (1 novembre 2021) : 012025. http://dx.doi.org/10.1088/1755-1315/843/1/012025.

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Abstract In the arid conditions of the Astrakhan region agricultural plants heat resistance is one of the important criteria of quality production getting. In this regard, and also taking into consideration the fact that the soils of our region are characterized by a very low content of trace elements in the form accessible to plants, researches were carried out to study the effect of trace elements of copper, manganese and zinc for tomato plants heat resistance. To exclude the trace elements rapid absorption by the soil, plants foliar treatments were used during the growing season with 0.05% solutions of zinc sulfate (ZnSO4), manganese sulfate (MnSO4) and copper sulfate (CuSO4). In the control variant, the plants were sprayed with water. The results showed that tomato plants foliar feeding during the III-V organogenesis stages with 0.05% solutions of zinc sulfate, manganese sulfate and copper sulfate have not got a significant effect on tomatoes growth and productivity. However, the zinc and copper trace elements positively influenced such physiological parameters of plants as the leaf cells hydration, the bound water content in them, the protoplasm viscosity, thereby contributing to the increase in tomato resistance to the adverse effects of high temperatures in the arid climate.
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Potarzycki, J., et W. Grzebisz. « Effect of zinc foliar application on grain yield of maize and its yielding compone ». Plant, Soil and Environment 55, No. 12 (28 décembre 2009) : 519–27. http://dx.doi.org/10.17221/95/2009-pse.

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Actual yields of maize harvested by farmers are at level much below attainable yield potential of currently cultivated varieties. Among many growth factors zinc was recognized as one of main limiting factors of maize crop growth and yielding. This hypothesis has been verified within a three-year field study, where zinc fertilizer was applied to maize plants at the 5<sup>th</sup> leaf stage. Maize crop responded significantly to zinc foliar application in two of three years of study. The optimal rate of zinc foliar spray for achieving significant grain yield response was in the range from 1.0 to 1.5 kg Zn/ha. Grain yield increase was circa 18% (mean of three years) as compared to the treatment fertilized only with NPK. Plants fertilized with 1.0 kg Zn/ha significantly increased both total N uptake and grain yield. Yield forming effect of zinc fertilizer revealed via improvement of yield structure elements. The number of kernels per plant showed the highest response (+17.8% as compared to the NPK plot) and simultaneously the highest dependence on N uptake (<i>R</i><sup>2</sup> = 0.79). For this particular zinc treatment, however, the length of cob can also be applied as a component of yield structure significantly shaping the final grain yield.
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Thèses sur le sujet "Plants, Effect of zinc on"

1

Genc, Yusuf. « Screening for zinc efficiency in barley (Hordeum vulgare L.) ». Title page, table of contents and summary only, 1999. http://web4.library.adelaide.edu.au/theses/09PH/09phg324.pdf.

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Bibliography: leaves 229-250. The aims of the study were to develop a reliable method for screening for Zn efficiency as an alternative to the current field-based methods, and to determine the extent of genotypic variation in tolerance to Zn deficiency in barley.
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Mulyati. « Zinc requirements of transplanted oilseed rape ». Thesis, Mulyati, (2004) Zinc requirements of transplanted oilseed rape. PhD thesis, Murdoch University, 2004. https://researchrepository.murdoch.edu.au/id/eprint/213/.

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Transplanting is a common practice for many horticultural crops and some field crops. Recently, transplanted oilseed rape (Brassica napus L.) crops have been reported to be sensitive to zinc (Zn) deficiency. However, Zn nutrition in transplanted field crops has not been investigated in detail. The objectives of this present research were to investigate whether transplanting increases external Zn requirements of transplanted oilseed rape, and the mechanisms of root function, growth and Zn uptake after transplanting including rhizosphere modification capacity by plant roots. The second objective was to examine the relative effects of root pruning and transplanting on Zn responses of oilseed rape, and the third objective was to determine external and internal Zn requirements of transplanted oilseed rape for diagnosing and predicting Zn deficiency. An experiment on a low Zn sand (DTPA extractable Zn 0.14 mg kg-1) was set up to determine whether transplanted oilseed rape had a higher Zn requirement than that of direct-sown plants. Low Zn supply depressed shoot dry weight, however, root growth was relatively more strongly suppressed than shoots. Maximum root dry weight required much higher external Zn for transplanted plants compared to direct-sown plants, whilst shoot dry weight required a similarly low external Zn supply. In addition, transplanted plants were sensitive to zinc deficiency during the early post-transplanting growth, and the response weakened as the plants recovered from root injury or transplanting stress. However, the transplanted plants also experienced root pruning before transplanting and so in this experiment the higher Zn requirement could have been due to root pruning or transplanting or both. A further experiment was undertaken to determine the comparative external Zn requirements of direct-sown and transplanted plants in well-stirred chelate-buffered solution culture where a rhizosphere effect on plant availability of Zn forms is absent and the effects of poor root-soil contact on post-transplanting growth are minimized. In solution culture at the same level of Zn supplied, direct- sown plants produced higher shoot and root dry matter and greater root length than those of transplanted plants. However, since a higher external Zn requirement was found for transplanted plants in buffered solution culture than for direct- sown plants, it was concluded that the higher Zn requirement was not related to decreased rhizosphere modification, to greater demand for Zn or to poor root-solution contact, but rather to the time required for transplanted plants to recover from transplanting and root injury. The recovery of root function in solution culture was more rapid than that in soil culture and expressed as a higher Zn requirement for shoot as well as root growth. It suggested that the delay in root recovery in soil culture was due to slower absorption of Zn from the soil after transplanting than was the case in solution culture. Chelate-buffered nutrient solution culture and harvesting plants successively at 5 day intervals until 25 days after transplanting was used to examine the mechanisms of the recovery of root growth and function. In this experiment, the external Zn requirement of transplanted plants was investigated with unpruned or pruned root systems. Plants with unpruned root system and sufficient Zn supply exhibited faster recovery from transplanting than those with pruned root system plants. The results suggest that root pruning impaired Zn uptake by plant roots and slowed down the root and shoot growth after transplanting. Increased solution Zn partly alleviated the effects of root pruning and presumably this is a major reason why transplanted oilseed rape had a high external Zn requirement. However, root pruning also appeared to impair water uptake, and may have suppressed shoot growth through sequestering carbon for new root growth and through decreased phytohormone production by roots. Since rapid root recovery of transplanted plants is essential for successful of growth in the field, Zn application to the nursery bed was explored as a starter fertilizer to stimulate root growth after transplanting. The objective of this experiment was to determine whether increasing the seedbed Zn would stimulate new root growth of transplanted oilseed rape, and therefore would alleviate the need for increased external Zn for post-transplanting growth. Results showed that adequate Zn concentration in the seedbed promoted the post-transplanting growth by stimulating the new root growth especially increased root length, and also hastened the recovery of root systems. However, high Zn concentration at transplanting still had a more dominant effect in stimulating the new root growth of oilseed rape after transplanting. The final experiment was set up using rhizobags with three rates of Zn supply and unpruned or pruned root systems. The purpose of this study was to investigate the chemical change in the rhizosphere and non-rhizosphere or bulk soil and its relationship to the recovery of root function after transplanting, and also to identify and quantify the organic acids in soil extracts of direct-sown and transplanted plants. The rhizosphere soil pH was lower than that of non-rhizosphere soil, and the decrease of soil pH was suggested as the mechanism of the increase of Zn availability and mobility in the rhizosphere soil. Direct-sown plants were more efficient in utilizing Zn than those of transplanted plants especially compared to those of plants with pruned root system. Zinc deficient plants excreted higher concentration of organic acids particularly citric acid, suggesting this was a mechanism of Zn mobilization and Zn uptake by roots of oilseed rape. The main implications of the present study for the management of Zn nutrition of transplanted crops were: the need to increase the Zn application to crops in the nursery and at transplanting compared to direct-sown plants; the possibility that external requirements of other nutrients will be greater in transplanted crops also requires further consideration; and in cropping systems where transplanting is practised, greater attention should be given to the avoidance of root damage during the transplanting.
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3

Mulyati. « Zinc requirements of transplanted oilseed rape ». Murdoch University, 2004. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20060109.135933.

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Transplanting is a common practice for many horticultural crops and some field crops. Recently, transplanted oilseed rape (Brassica napus L.) crops have been reported to be sensitive to zinc (Zn) deficiency. However, Zn nutrition in transplanted field crops has not been investigated in detail. The objectives of this present research were to investigate whether transplanting increases external Zn requirements of transplanted oilseed rape, and the mechanisms of root function, growth and Zn uptake after transplanting including rhizosphere modification capacity by plant roots. The second objective was to examine the relative effects of root pruning and transplanting on Zn responses of oilseed rape, and the third objective was to determine external and internal Zn requirements of transplanted oilseed rape for diagnosing and predicting Zn deficiency. An experiment on a low Zn sand (DTPA extractable Zn 0.14 mg kg-1) was set up to determine whether transplanted oilseed rape had a higher Zn requirement than that of direct-sown plants. Low Zn supply depressed shoot dry weight, however, root growth was relatively more strongly suppressed than shoots. Maximum root dry weight required much higher external Zn for transplanted plants compared to direct-sown plants, whilst shoot dry weight required a similarly low external Zn supply. In addition, transplanted plants were sensitive to zinc deficiency during the early post-transplanting growth, and the response weakened as the plants recovered from root injury or transplanting stress. However, the transplanted plants also experienced root pruning before transplanting and so in this experiment the higher Zn requirement could have been due to root pruning or transplanting or both. A further experiment was undertaken to determine the comparative external Zn requirements of direct-sown and transplanted plants in well-stirred chelate-buffered solution culture where a rhizosphere effect on plant availability of Zn forms is absent and the effects of poor root-soil contact on post-transplanting growth are minimized. In solution culture at the same level of Zn supplied, direct- sown plants produced higher shoot and root dry matter and greater root length than those of transplanted plants. However, since a higher external Zn requirement was found for transplanted plants in buffered solution culture than for direct- sown plants, it was concluded that the higher Zn requirement was not related to decreased rhizosphere modification, to greater demand for Zn or to poor root-solution contact, but rather to the time required for transplanted plants to recover from transplanting and root injury. The recovery of root function in solution culture was more rapid than that in soil culture and expressed as a higher Zn requirement for shoot as well as root growth. It suggested that the delay in root recovery in soil culture was due to slower absorption of Zn from the soil after transplanting than was the case in solution culture. Chelate-buffered nutrient solution culture and harvesting plants successively at 5 day intervals until 25 days after transplanting was used to examine the mechanisms of the recovery of root growth and function. In this experiment, the external Zn requirement of transplanted plants was investigated with unpruned or pruned root systems. Plants with unpruned root system and sufficient Zn supply exhibited faster recovery from transplanting than those with pruned root system plants. The results suggest that root pruning impaired Zn uptake by plant roots and slowed down the root and shoot growth after transplanting. Increased solution Zn partly alleviated the effects of root pruning and presumably this is a major reason why transplanted oilseed rape had a high external Zn requirement. However, root pruning also appeared to impair water uptake, and may have suppressed shoot growth through sequestering carbon for new root growth and through decreased phytohormone production by roots. Since rapid root recovery of transplanted plants is essential for successful of growth in the field, Zn application to the nursery bed was explored as a starter fertilizer to stimulate root growth after transplanting. The objective of this experiment was to determine whether increasing the seedbed Zn would stimulate new root growth of transplanted oilseed rape, and therefore would alleviate the need for increased external Zn for post-transplanting growth. Results showed that adequate Zn concentration in the seedbed promoted the post-transplanting growth by stimulating the new root growth especially increased root length, and also hastened the recovery of root systems. However, high Zn concentration at transplanting still had a more dominant effect in stimulating the new root growth of oilseed rape after transplanting. The final experiment was set up using rhizobags with three rates of Zn supply and unpruned or pruned root systems. The purpose of this study was to investigate the chemical change in the rhizosphere and non-rhizosphere or bulk soil and its relationship to the recovery of root function after transplanting, and also to identify and quantify the organic acids in soil extracts of direct-sown and transplanted plants. The rhizosphere soil pH was lower than that of non-rhizosphere soil, and the decrease of soil pH was suggested as the mechanism of the increase of Zn availability and mobility in the rhizosphere soil. Direct-sown plants were more efficient in utilizing Zn than those of transplanted plants especially compared to those of plants with pruned root system. Zinc deficient plants excreted higher concentration of organic acids particularly citric acid, suggesting this was a mechanism of Zn mobilization and Zn uptake by roots of oilseed rape. The main implications of the present study for the management of Zn nutrition of transplanted crops were: the need to increase the Zn application to crops in the nursery and at transplanting compared to direct-sown plants; the possibility that external requirements of other nutrients will be greater in transplanted crops also requires further consideration; and in cropping systems where transplanting is practised, greater attention should be given to the avoidance of root damage during the transplanting.
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4

Khan, Habib Ur Rahman. « Responses of chickpea (Cicer arietinum L.) to zinc supply and water deficits ». Title page, contents and summary only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09phk4446.pdf.

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Bibliography: leaves 201-228. Widespread deficiencies of mineral nutrients in soils along with limited moisture supply are considered major environmental stresses leading to yield losses in chickpea. This study was conducted to determine the zinc requirement of chickpea and the effect on plant water relations. Critical zinc concentration was estimated. It was found that high and low moisture regimes had no effect on critical zinc concentration and that the value remained almost the same in all chickpea genotypes. Sensitivity of 28 chickpea genotypes were evaluated at two zinc levels. Field studies on zinc fertilization in both Australia and Pakistan showed that the application of zinc increased grain yield in all chickpea genotypes. It was found that plants grown under zinc deficiency could not exploit available soil moisture and water use and water use efficiency was reduced, and concluded that high zinc availability may enhance the ability of plants to endure periods of drought by promoting osmotic adjustment.
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5

Neilsen, Denise. « Characterization and plant availability of zinc in British Columbia orchard soils ». Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=72835.

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6

Deka, Priyanka. « The Effect of Zinc Oxide Nanoparticles on Plants, and on Host-Pathogen Interactions ». Diss., North Dakota State University, 2019. https://hdl.handle.net/10365/29270.

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Zinc oxide nanoparticles (ZnO NPs) are a type of engineered nanomaterial that is currently being explored for use in different aspects of agriculture. So far, research on this area is limited to evaluating the phenotypical responses of plants to a high concentration of the NPs which is realistically not feasible in the actual environment. This research aims to investigate the molecular-level interactions between ZnO NPs and plants, together with another significant component of the environment, a fungal plant pathogen. Prior to studying these molecular-level interactions, the uptake of ZnO NPs in planta was validated using a fluorescent zinc ion sensor, Zinpyr-1 and a zinc ion chelator, TPEN in confocal laser scanning microscopy (CLSM) and Transmission Electron Microscopy (TEM). Phenotypical effects were studied in soybean plants exposed to environmentally relevant concentrations of ZnO NPs and bioaccumulation of zinc was studied in seeds of soybean and other soy products. The next phase of this research focused on investigating the physiological responses of plants exposed to ZnO NPs. This was achieved by elucidating the complete transcriptome of the plants using a Next Generation sequencing (NGS) platform, RNA seq. A significant part of this research emphasized on exploring the effects of ZnO NPs on host-pathogen interactions. The model monocot plant, barley was used in this study, together with a necrotrophic pathogen, Pyrenophora teres f. teres (Ptt). The barley line which was used, CI5791 is resistant to the disease Net Form Net Blotch (NFNB), caused by Ptt. Rapid responses of plants to ZnO NPs were observed that subsided at the later time-points, whereas the heightened responses to the pathogen alone (P) and combined application (ZnO NP + P) persisted. Exposure to ZnO NPs also induced transcriptional reprogramming in the Ptt inoculated plant that resulted in compromised immunity in the otherwise resistant barley, due to the persistence of salicylic acid (SA)-related genes. In ZnO NP-exposed Arabidopsis thaliana, the effects were contradictory. From the barley and Arabidopsis expression data, it could be concluded that both species react differently to ZnO NPs, giving a glimpse of the differential responses that ZnO NPs may elicit in different plant species.
USDA-NIFA
National Science Foundation (NSF)
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7

Wheal, Matthew Simon. « The influence of chlorsulfuron on the uptake and utilization of zinc by wheat / ». Title page, table of contents and summary only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phw556.pdf.

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Nguyen, Thi Ngoc nga. « Functional expression of Plant Defensins type 1 for zinc tolerance in plants ». Thesis, Montpellier 2, 2014. http://www.theses.fr/2014MON20032/document.

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Plant Defensins type 1 (PDF1) sont principalement décrites pour leur rôle dans l'immunité innée en réponse à des attaques pathogènes via l'activation de la voie de signalisation de l'éthylène (Et) et de l'acide jasmonique (JA). Les défensines PDF1 du genre Arabidopsis sont également impliquées dans la tolérance cellulaire au zinc chez la levure. In planta, de nombreux résultats mettent en évidence une corrélation entre la forte accumulation des transcrits AhPDF1 et leur contribution dans la tolérance à un excès de zinc. Dans cette étude, l'analyse du transcriptome (qRT-PCR) révèle que les paralogues PDF1s, aussi bien chez A. thaliana que chez A. halleri sont très peu voire pas du tout sensibles au zinc. Toutefois, il y a une spécialisation des PDF1s en réponse à l'activation de la voie de l'acide jasmonique dans le genre Arabidopsis. De plus, la contribution fonctionnelle des membres de la famille PDF1s dans la tolérance au zinc a été caractérisée chez A. thaliana à l'aide d'une approche génétique combinant des mutants KO après insertion d'un ADN-T et la technologie de miRNA artificiel. L'étude de ces mutants souligne par ailleurs la diversité fonctionnelle au sein de la famille des défensines AtPDF1s qui ne confèrent pas toutes la tolérance au zinc. En effet, une diversité de déterminants moléculaires des PDF1s a été mise en évidence lors de cette étude. La forte accumulation des PDF1s n'est pas l'unique paramètre requis pour la tolérance au zinc. Il faut également considérer la spécificité de tissu où s'expriment ces PDF1s. A ces considérations s'ajoutent aussi des régulations post-transcriptionnelles et post-traductionnelles. L'étude de ces modifications est envisagée afin de comprendre la contribution des différentes défensines PDF1s dans la tolérance au zinc
Plant Defensin type 1 (PDF1s) are mainly recognized for their response to pathogen attack via ethylene (Et)/jasmonate (JA) signaling activation pathway. However, PDF1s originating from Arabidopsis genus also showed their capacity to induce cellular zinc tolerance up on expression in yeast. In planta, a group of observation highlighted the correlation of AhPDF1 high transcript accumulation for their contribution to zinc tolerance. Here, transcriptomic analysis (qRT-PCR) revealed that in both A. thaliana and A. halleri species, PDF1 paralogues were barely or not at all responsive to zinc. Nevertheless, there is a species specialization of PDF1s in response to activation of JA-signaling in Arabidopsis genus. In addition, in A. thaliana, the functional contribution of PDF1 members in zinc tolerance was investigated through genetic approach. Examining combination of T-DNA insertion knockout mutant and artificial miRNA, these studies were first direct demonstration of the functional involvement of AtPDF1s in zinc tolerance. These also highlighted the functional diversity among AtPDF1s because not all of them could play a role in zinc tolerance. Indeed, a diversity of PDF1 molecular determinants for zinc tolerance in plants was underlined. Remarkably, PDF1 high transcript is not the only important parameter for zinc tolerance and PDF1 tissue specificity could be an important factor to consider. Moreover, post-transcriptional and post-translational regulation might occur. Studies on these modifications are now the further questions in order to understand the contribution of the different PDF1s to zinc tolerance
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Ramesh, Sunita. « Molecular mechanism of zinc uptake and regulation in cereals ». Title page, table of contents and abstract only, 2002. http://web4.library.adelaide.edu.au/theses/09PH/09phr1724.pdf.

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Bibliography: leaves 174-204. "This work provides a starting point for understanding the molecular mechanisms of zinc uptake and the regulation of zinc transport in cereals. Zinc efficient cereals would yield more on soild with low zinc and could potentially result in increased zinc content grain."
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Singbo, Arnaud. « The effect of zinc and soil ph on grain yield and nutrient concentrations in spring wheat cultivated on potted soil ». Thesis, Cape Peninsula University of Technology, 2018. http://hdl.handle.net/20.500.11838/2845.

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Thesis (MTech (Agriculture))--Cape Peninsula University of Technology, 2018.
Zinc deficiency on various soil types have been reported in arable soils of sub Saharan Africa (SSA) including South Africa. A pot trial was conducted at the Cape Peninsula University of Technology, Wellington campus to investigate the interaction of different application rates of Zn at various soil pH on the grain yield and quality of spring wheat in a completely randomized factorial design replicated three times. The four soil pH tested were: pHA: 5.1, pHB: 5.6, pHC: 6.1, pHD: 6.6 which correspond to lime application at 0, 0.5, 1 and 1.5 t/ha. Five Zn rates (Zn1: 3.5; Zn2: 4.5; Zn3: 5.5 Zn4: 6.5, and Zn5: 7.5 mg /kg soil which correspond to Zn1: 7; Zn2: 9; Zn3: 11; Zn4: 13 and Zn5: 15 kg /ha) were applied at two (planting and flowering) growth stages. Yield and yield component data collected were analyzed using SAS version 9.2 and means were separated by Duncun’s Multiple Range Test (DMRT). The results showed that grain yield and yield components were significantly affected by lime application pHC (6.1): 1t/ha at planting. Zn application at planting had no significant effect on the grain yield and yield components. However, at flowering, the simultaneous increase of Zn along with increase in lime positively affected grain yield and yield components. Plant analysis showed that at both stages (planting and flowering), Zn application, especially at pH 6.6, significantly increased P, K, Ca, Na, Mg Fe, Cu and B concentrations in wheat grain, but the concentrations of N, Mn, Zn and protein remained unaffected. Zn application had no effect on most nutrients due to the presence of lime. While the absence of lime, Zn4: 6.5mg/kg (corresponding to 13kg/ha) significantly increased the nutrients. In addition, Zn3: 5.5mg/kg (corresponding to 11kg/ha) promoted Zn absorption by grain in all treatments.
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Livres sur le sujet "Plants, Effect of zinc on"

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International Symposium on "Zinc in Soils and Plants" (1993 University of Western Australia). Zinc in soils and plants : Proceedings of the International Symposium on "Zinc in Soils and Plants," held at the University of Western Australia, 27-28 September, 1993. Dordrecht : Kluwer Academic Publishers, 1993.

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Schaumloffel, John C. Ponderosa pine annual growth rings as monitors of zinc, lead, & cadmium in the Coeur d'Alene-Spokane River system, Idaho, U.S.A. Pullman : Dept. of Chemistry and Nuclear Radiation Center, 1994.

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Die Toxizität von Zink, Schwefel- und Stickstoffverbindungen auf Flechten-Symbionten. Vaduz : J. Cramer, 1985.

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Parker, R. W. Boron, lead, and zinc as contaminants in forest ecosystems : A literature review. Rotorua, N.Z : Forest Research Institute, New Zealand Forest Service, 1986.

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Tsur, Avri. Simane ḥeser ṿe-hafraʻot gidul be-tapuaḥ. [Israel] : Miśrad ha-ḥaḳlaʼut, Sherut ha-hadrakhah ṿeha-miḳtsoʻa, ha-Maḥlaḳah le-maṭaʻim, 1993.

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Biochemistry of zinc. New York : Plenum Press, 1993.

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Robson, A. D., dir. Zinc in Soils and Plants. Dordrecht : Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-0878-2.

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Zinc in human health. Amsterdam : IOS Press, 2011.

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Kechrid, Zine. The effect of sub-optimal dietary zinc on zinc and carbohydrate metabolism in genetically diabetic mice. Norwich : University of East Anglia, 1987.

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Schaefer, R. J. Interaction of zinc vapor with Zircaloy and the effect of zinc vapor on the mechanical properties of zircaloy. Washington, DC : U.S. Nuclear Regulatory Commission, 2000.

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Chapitres de livres sur le sujet "Plants, Effect of zinc on"

1

Yilmaz, A., H. Ekiz, I. Gültekin, B. Torun, S. Karanlik et I. Cakmak. « Effect of seed zinc content on grain yield and zinc concentration of wheat grown in zinc-deficient calcareous soils ». Dans Plant Nutrition for Sustainable Food Production and Environment, 283–84. Dordrecht : Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-009-0047-9_82.

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Gora, L., et H. Clijsters. « Effect of Copper and Zinc on the Ethylene Metabolism in Phaseolus Vulgaris L. » Dans Biochemical and Physiological Aspects of Ethylene Production in Lower and Higher Plants, 219–28. Dordrecht : Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1271-7_25.

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Faizan, Mohammad, Shamsul Hayat et John Pichtel. « Effects of Zinc Oxide Nanoparticles on Crop Plants : A Perspective Analysis ». Dans Sustainable Agriculture Reviews 41, 83–99. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-33996-8_4.

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Rout, Gyana Ranjan, et Premananda Das. « Effect of Metal Toxicity on Plant Growth and Metabolism : I. Zinc ». Dans Sustainable Agriculture, 873–84. Dordrecht : Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2666-8_53.

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Poonia, S. R., et A. K. Deka. « Effect of farmyard manure on relative sorption of copper, zinc, cobalt, and cadmium in soils from semi-arid and humid regions of India ». Dans Plant Nutrition, 482–83. Dordrecht : Springer Netherlands, 2001. http://dx.doi.org/10.1007/0-306-47624-x_233.

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Cakmak, I., et H. Marschner. « Effect of zinc nutritional status on activities of superoxide radical and hydrogen peroxide scavenging enzymes in bean leaves ». Dans Plant Nutrition — from Genetic Engineering to Field Practice, 133–36. Dordrecht : Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1880-4_21.

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de Mello Prado, Renato. « Zinc ». Dans Mineral nutrition of tropical plants, 191–202. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-71262-4_11.

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Chaney, R. L. « Zinc Phytotoxicity ». Dans Zinc in Soils and Plants, 135–50. Dordrecht : Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-0878-2_10.

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Mortvedt, J. J., et R. J. Gilkes. « Zinc Fertilizers ». Dans Zinc in Soils and Plants, 33–44. Dordrecht : Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-0878-2_3.

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Grewal, Harsharn Singh, Robin D. Graham et James C. R. Stangoulis. « Effect of temperature and zinc supply on early growth of Zn-efficient and Zn-inefficient genotypes of oilseed rape (Brassica napus L.) ». Dans Plant Nutrition for Sustainable Food Production and Environment, 413–14. Dordrecht : Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-009-0047-9_125.

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Actes de conférences sur le sujet "Plants, Effect of zinc on"

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Bashmakova, E. B., et P. P. Pashkovsky. « The combined effect of zinc and nickel on the redox balance and iron homeostasis in plants of speckled mimulus ». Dans IX Congress of society physiologists of plants of Russia "Plant physiology is the basis for creating plants of the future". Kazan University Press, 2019. http://dx.doi.org/10.26907/978-5-00130-204-9-2019-60.

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Muratova, A. Yu, A. A. Nurzhanova et O. V. Turkovskaya. « Effect of heavy metals and hydrocarbons on rhizosphere microbial communities of Miscanthus × giganteus ». Dans 2nd International Scientific Conference "Plants and Microbes : the Future of Biotechnology". PLAMIC2020 Organizing committee, 2020. http://dx.doi.org/10.28983/plamic2020.178.

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Microbiological analysis of soil from the root zone of Miscanthus × giganteus revealed differences in the physiological and taxonomic structure of the rhizosphere microbial community under the influence of soil contamination with zinc and oil sludge.
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Nicodemus, Julia Haltiwanger, Morgan McGuinness et Rijan Maharjan. « A Thermodynamic and Cost Analysis of Solar Syngas From the Zinc/Zinc-Oxide Cycle ». Dans ASME 2014 8th International Conference on Energy Sustainability collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/es2014-6389.

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We present a thermodynamic and cost analysis of synthesis gas (syngas) production by the Zn/ZnO solar thermochemical fuel production cycle. A mass, energy and entropy balance over each step of the Zn/ZnO syngas production cycle is presented. The production of CO and H2 is considered simultaneously across the range of possible stoichiometric combinations and the effects of irreversibilities due to both recombination in the quenching process following dissociation of ZnO and incomplete conversion in the fuel production step are explored. In the cost analysis, continuous functions for each cost component are presented, allowing estimated costs of syngas fuel produced at plants between 50 and 500MWth. For a solar concentration ratio of 10000, a dissociation temperature of 2300K, and a CO fraction in the syngas of 1/3, the maximum cycle efficiency is 39% for an ideal case in which there is no recombination in the quencher, complete conversion in the oxidizer, and maximum heat recovery. In a 100MWth plant, the cost to produce syngas would be $0.025/MJ for this ideal case. The effect of heat recuperation, recombination in the quencher, and incomplete conversion on efficiency and cost are explored. The effect of plant size and feedstock costs on the cost of solar syngas are also explored. The results underscore the importance improving quencher and oxidizer processes to reduce costs. However, even assuming the ideal case, the predicted cost of solar syngas is 5.5 times more expensive than natural gas on an energy basis. The process will therefore require incentive policies that support early implementation in order to become economically competitive.
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Ghani, M., S. V. Slycken, E. Meers, F. M. G. Tack, F. Naz et S. Ali. « Enhanced Phytoextraction of Cadmium and Zinc Using Rapeseed ». Dans ASME 2013 15th International Conference on Environmental Remediation and Radioactive Waste Management. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icem2013-96362.

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In a green house pot experiment, the effects of three amendments, sulphur (S), ammonium sulphate ((NH4)2SO4) and ethylenediaminetetracetic acid (EDTA) were tested for phytoextraction of Cd and Zn by rapeseed (Brassica napus L.). Elemental sulphur was applied as 20.00, 60.00, and 120.00 mg.kg−1 soil. EDTA was tested at a dose of 585.00 mg.kg−1 soil, and (NH4)2SO4) at a rate of 0.23 mg.kg−1 soil. All treatments received a base fertilization (Hogland) before sowing. Plants were harvested after 51 days of growth and shoot dry matter and soil samples were analysed for metal contents. All amendments caused a significant increase in Cd and Zn contents in plant shoots of all treatments than control treatment. Further, EDTA was most effective for extraction metals concentrations in shoot biomass but the plants showed significant signs of toxicity and yield were severely depressed. The addition of sulfur favorably influenced plant biomass production. The fertilized ammonium sulfate treatment resulted in the highest phytoextraction of Cd and Zn and the amounts of these metals accumulated in plant shoot exceeded by a factor of 4 and 3 respectively. Finally, Brassica napus could be used for soil remediation keeping its other uses which will make the contaminated site income generating source for the farmers.
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Казнина, Н. М., Ю. В. Батова, А. А. Игнатенко, О. А. Орловская et Н. И. Дубовец. « EFFECT OF GPC-B1 GENE ALLELE STATE ON ADAPTATION OF TRITICUM DICOCCOIDES AND TRITICUM AESTIVUM PLANTS TO ZINC DEFICIENCY ». Dans Материалы I Всероссийской научно-практической конференции с международным участием «Геномика и современные биотехнологии в размножении, селекции и сохранении растений». Crossref, 2020. http://dx.doi.org/10.47882/genbio.2020.50.12.068.

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Osmolovskaya, N. G., V. D. Vu, T. E. Bilova, L. N. Kuchaeva et N. F. Popova. « METABOLIC RESPONSE IN PLANT ORGANS OF AMARANTH TO THE EFFECT OF HIGH CONCENTRATIONS OF CADMIUM AND ZINC IN THE ENVIRONMENT ». Dans The All-Russian Scientific Conference with International Participation and Schools of Young Scientists "Mechanisms of resistance of plants and microorganisms to unfavorable environmental". SIPPB SB RAS, 2018. http://dx.doi.org/10.31255/978-5-94797-319-8-1099-1102.

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Albina, Dionel O., Karsten Millrath et N. J. Themelis. « Effects of Feed Composition on Boiler Corrosion in Waste-to-Energy Plants ». Dans 12th Annual North American Waste-to-Energy Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/nawtec12-2215.

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Municipal solid wastes (MSW) typically contain plastic materials, leather, textiles, batteries, food waste and alkalis. These materials are sources of chlorine, sulfur, potassium, zinc, lead and other heavy metals that can form corrosive media during combustion of the MSW in waste-to-energy (WTE) facilities. Chlorides and sulfates, along with fly ash particles, condense or deposit on the waterwall surfaces in the combustion chamber and on other heat exchanger surfaces in the convection path of the process gas, such as screens and superheater tubes. The resulting high corrosion spots necessitate shutdowns and tube replacements, which represent major operating costs. The aim of ongoing research at Columbia University is to gain a better understanding of the effects of fuel composition, products of combustion, and chemical reactions that lead to the corrosion of metal surfaces in WTE boilers. The potential chemical reactions and their chance of occurrence were determined by means of thermochemical calculations of the respective equilibrium constants as a function of temperature and gas phase composition.
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Yang, Haibin, Qingsong Zhang, Lijin Jin, Weiding Yuan, Xuemei Zhu et Jirong Shao. « Effects of Modifiers on Soil Enzyme Activity at Different Growth Stages of Rice Plants under Zinc and Chromium Stresses ». Dans 2010 4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2010. http://dx.doi.org/10.1109/icbbe.2010.5516598.

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« The influence of the toxic effect of zinc and mineral starvation on the growth and development of buckwheat regenerants in vitro culture ». Dans Plant Genetics, Genomics, Bioinformatics, and Biotechnology. Novosibirsk ICG SB RAS 2021, 2021. http://dx.doi.org/10.18699/plantgen2021-025.

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PEKARSKAS, Juozas, Algirdas GAVENAUSKAS, Anželika DAUTARTĖ et Aida STIKLIENĖ. « RECYCLING OF MINERAL SERPENTINITE WASTE FROM MINING INDUSTRY AND ITS USE IN AGRICULTURE TO IMPROVE SOIL AGROCHEMICAL PROPERTIES ». Dans RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.102.

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The influence of processing the serpentinite quarry from the Caucasian mountains at the foot of the Mount Elbrus crushed waste on soil agrochemical properties, phytotoxicity of spring barley, influence on barley plant biomass and its chemical composition were investigated. Ground and granular serpentinite had a different effect on soil and plants. Application of serpentinite fertilizers significantly increased the content of calcium, iron, 227.95-376.75 and 5.05-9.62 mg kg-1, total and plant-derived magnesium 0.34-0.52 and 1.19-2.16 mg kg-1, lead and nickel, while the amount of copper dropped substantially; the soil was becoming more alkaline. Application of ground serpentinite lead to alkalizing of the soil much more compared to the granular, with a significant increase in plant-derived magnesium. The influence of serpentinite increased the yield of spring barley plants in green and dry mass by 0.049-0.256 and 0.011-0.046 g or 0.65-3.41 and 1.19-2.59% out of the growing vessel, and dry matter increased by 0.12-0.26 % units, the yield of spring barley green and dry mass under the influence of ground serpentinite was higher than of granular serpentinite fertilizer, and the dry matter was found to be significantly higher than that of unfertilized spring barley plants. Ground and granular serpentinite was not phytotoxic to spring barley. An application of ground serpentinite increased an amount of calcium, potassium and magnesium in the barley dry matter compared to the granular serpentinite. Ground and granular serpentinite reduced the amount of trace elements copper and manganese in the dry mass of the plant, and the amount of zinc decreased only after fertilization with granular serpentinite. An application of serpentinite significantly decreased content of lead, chrome and cadmium while nickel content significantly increased in the dry matter of barley plants.
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Rapports d'organisations sur le sujet "Plants, Effect of zinc on"

1

Korinko, P. EFFECT OF PORE SIZE ON TRAPPING ZINC VAPORS. Office of Scientific and Technical Information (OSTI), décembre 2010. http://dx.doi.org/10.2172/1025511.

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Korinko, P. EFFECT OF FILTER TEMPERATURE ON TRAPPING ZINC VAPOR. Office of Scientific and Technical Information (OSTI), mars 2011. http://dx.doi.org/10.2172/1025512.

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Korinko, P., et M. Golyski. EFFECT OF THERMAL PROCESSES ON COPPER-TIN ALLOYS FOR ZINC GETTERING. Office of Scientific and Technical Information (OSTI), novembre 2013. http://dx.doi.org/10.2172/1098218.

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Twin City Die Castings Company, Tom Heider et North American Die Castings Association. Energy and Technolgy Assessment of Zinc and Magnesium Casting Plants, Technical Report Close-out, August 25,2006. Office of Scientific and Technical Information (OSTI), août 2006. http://dx.doi.org/10.2172/909329.

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Coughlin, D., B. Looney et M. Millings. CHRONIC ZINC SCREENING WATER EFFECT RATIO FOR THE H-12 OUTFALL, SAVANNAH RIVER SITE. Office of Scientific and Technical Information (OSTI), janvier 2009. http://dx.doi.org/10.2172/946164.

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Jander, Georg, et Daniel Chamovitz. Investigation of growth regulation by maize benzoxazinoid breakdown products. United States Department of Agriculture, janvier 2015. http://dx.doi.org/10.32747/2015.7600031.bard.

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Introduction Previous research had suggested that benzoxazinoids, a class of defensive metabolites found in maize, wheat, rye, and wild barley, are not only direct insect deterrents, but also influence other areas of plant metabolism. In particular, the benzoxazinoid 2,4-dihydroxy-7-methoxy-2H-1,4-benzoxa- zin-3(4H)- one (DIMBOA) was implicated in: (i) altering plant growth by interfering with auxin signaling, and (ii) leading to the induction of gene expression changes and secondary plant defense responses. The overall goal of this proposal was to identify mechanisms by which benzoxazinoids influence other aspects of plant growth and defense. Specifically, the following hypotheses were proposed to be tested as part of an approved BARD proposal: Benzoxazinoid breakdown products directly interfere with auxin perception Global changes in maize and barley gene expression are induced by benzoxazinoid activation. There is natural variation in the maize photomorphogenic response to benzoxazinoids. Although the initial proposal included experiments with both maize and barley, there were some technical difficulties with the proposed transgenic barley experiments and most of the experimental results were generated with maize. Summary of major findings Previous research by other labs, involving both maize and other plant species, had suggested that DIMBOA alters plant growth by interfering with auxin signaling. However, experiments conducted in both the Chamovitz and the Jander labs using Arabidopsis and maize, respectively, were unable to confirm previously published reports of exogenously added DIMBOA effects on auxin signaling. Nevertheless, analysis of bx1 and bx2 maize mutant lines, which have almost no detectable benzoxazinoids, showed altered responses to blue light signaling. Transcriptomic analysis of maize mutant lines, variation in inbred lines, and responses to exogenously added DIMBOA showed alteration in the transcription of a blue light receptor, which is required for plant growth responses. This finding provides a novel mechanistic explanation of the trade-off between growth and defense that is often observed in plants. Experiments by the Jander lab and others had demonstrated that DIMBOA not only has direct toxicity against insect pests and microbial pathogens, but also induces the formation of callose in both maize and wheat. In the current project, non-targeted metabolomic assays of wildtype maize and mutants with defects in benzoxazinoid biosynthesis were used to identify unrelated metabolites that are regulated in a benzoxazinoid-dependent manner. Further investigation identified a subset of these DIMBOA-responsive compounds as catechol, as well as its glycosylated and acetylated derivatives. Analysis of co-expression data identified indole-3-glycerol phosphate synthase (IGPS) as a possible regulator of benzoxazinoid biosynthesis in maize. In the current project, enzymatic activity of three predicted maize IGPS genes was confirmed by heterologous expression. Transposon knockout mutations confirmed the function of the maize genes in benzoxazinoid biosynthesis. Sub-cellular localization studies showed that the three maize IGPS proteins are co-localized in the plastids, together with BX1 and BX2, two previously known enzymes of the benzoxazinoid biosynthesis pathway. Implications Benzoxazinoids are among the most abundant and effective defensive metabolites in maize, wheat, and rye. Although there is considerable with-in species variation in benzoxazinoid content, very little is known about the regulation of this variation and the specific effects on plant growth and defense. The results of this research provide further insight into the complex functions of maize benzoxazinoids, which are not only toxic to pests and pathogens, but also regulate plant growth and other defense responses. Knowledge gained through the current project will make it possible to engineer benzoxazinoid biosynthesis in a more targeted manner to produce pest-tolerant crops without negative effects on growth and yield.
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Morton, D. S., C. D. Thompson, D. Gladding et M. K. Schurman. Effect of soluble zinc additions on the SCC performance of nickel alloys in deaerated hydrogenated water. Office of Scientific and Technical Information (OSTI), août 1997. http://dx.doi.org/10.2172/319774.

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Veverka, Donald, Candy Wilson, Deborah Jones, Anneke Bush et Peter Kober. Effect of Zinc Supplements on Preventing Upper Respiratory Infections in Air Force Academy Cadets in Basic Training. Fort Belvoir, VA : Defense Technical Information Center, janvier 2009. http://dx.doi.org/10.21236/ada497496.

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Alwin, Jennifer Louise. Effect of Operating Parameters and Chemical Additives on Crystal Habit and Specific Cake Resistance of Zinc Hydroxide Precipitates. Office of Scientific and Technical Information (OSTI), août 1999. http://dx.doi.org/10.2172/10599.

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Genther-Schroeder, Olivia N., et Stephanie L. Hansen. Effect of Zinc Amino-Acid Complex and Optaflexx Feeding Duration on Growth Performance and Carcass Characteristics of Finishing Cattle. Ames (Iowa) : Iowa State University, janvier 2016. http://dx.doi.org/10.31274/ans_air-180814-562.

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