Letteratura scientifica selezionata sul tema "Arbuscular mycorrhizae"

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Articoli di riviste sul tema "Arbuscular mycorrhizae"

1

Cooke, Margaret A., Paul Widden e Ivan O'Halloran. "Development of vesicular–arbuscular mycorrhizae in sugar maple (Acer saccharum) and effects of base-cation ammendment on vesicle and arbuscule formation". Canadian Journal of Botany 71, n. 11 (1 novembre 1993): 1421–26. http://dx.doi.org/10.1139/b93-171.

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Abstract (sommario):
The development, condition, and incidence of vesicular–arbuscular mycorrhizae of Acer saccharum (sugar maple) seedlings grown in the greenhouse in natural sugar maple forest soil substrate were examined. The effects of the addition of a cation mixture containing calcium, magnesium, and potassium were also studied. The mycorrhizal structures observed were similar to those found in natural field conditions. Mycorrhizae developed intracellularly via hyphal coils, and arbuscules usually developed from these coils, forming arbusculate coils. This development is different from that observed in most annual crop plants. Vesicular–arbuscular mycorrhizal structures appeared within 30 days. The rate of mycorrhizal infection decreased, along with plant health, as the quantity of the added cations was increased, but the amendment did not affect the morphology of the infection. More vesicles were observed in the lowest level of application than in controls, suggesting a stress response and possible relationship between plant health and condition of the mycorrhizal association. Key words: Acer saccharum, development, vesicular–arbuscular mycorrhizae.
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Arham, Arham, Andi Bahrun, La Karimuna, Tresjia Corina Rakian e Gusnawaty H. S. Gusnawaty H.S. "Pengaruh Biochar Kulit Buah Kakao dan Berbagai Agens Hayati Terhadap Pertumbuhan Bibit Kakao". Berkala Penelitian Agronomi 8, n. 2 (8 novembre 2021): 51. http://dx.doi.org/10.33772/bpa.v8i2.14763.

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The use of cocoa pod husk biochar and various biological agents in the planting medium significantly increased the growth of cocoa seedlings. The research was conducted using a Randomized Block Design (RBD) with a Split Plot pattern. The main factors consisted of 2 (two) treatment levels, namely: B0 (without biochar of cocoa pod skin) and B1 (15 g of cocoa pod husk biochar), while the child factors consisted of 4 (four) treatment levels, namely: A0 (without biological agents), M (arbuscular mycorrhiza 15 g), MR (arbuscular mycorrhizae 15 g + 15 ml rhizobacteria) and MT (arbuscular mycorrhizae 15 g + Trichoderma sp. 15 ml), so that there are 8 (eight) treatment combinations, namely: B0A0 (without biochar and without biological agents), B0M (without cocoa pod husk biochar + arbuscular mycorrhizae 15 g), B0MR (without cocoa pod husk biochar + arbuscular mycorrhizae 15 g + rhizobacteria 15 ml), B0MT (without cocoa pod husk biochar + arbuscular mycorrhiza 15 g + Trichoderma sp. 15 ml), B1A0 (cocoa pod husk biochar 15 g + without biological agents), B1M (cocoa pod husk biochar 15 g + arbuscular mycorrhizae 15 g), B1MR (cocoa pod husk biochar 15 g + arbuscular mycorrhizae 15 g + rhizobacteria 15 ml), B1MT (cocoa pod husk biochar 15 g + arbuscular mycorrhizae 15 g + Trichoderma sp. 15 ml), which repeated 4 (four) times so that there are 32 experimental units. The variables observed were plant height, total leaf area, number of leaves, root length, root dry weight, shoot dry weight. The results showed that the interaction of cocoa pod husk biochar and biological agents had no significant effect on the growth of cocoa seedlings. Application of cocoa pod husk biochar 15 g/polybag had a significant effect in increasing the growth of cocoa seedlings compared to without cocoa pod husk biochar, while the application of biological agents was shown in the 15 g arbuscular mycorrhizae + Trichoderma sp. 15 ml / polybag has a very significant effect on increasing the growth of cocoa seedlings compared to without biological agents.Keywords: Biochar, arbuscular mycorrhizal, nutrient uptake.
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Ruotsalainen, Anna Liisa, e Sami Aikio. "Mycorrhizal inoculum and performance of nonmycorrhizal Carex bigelowii and mycorrhizal Trientalis europaea". Canadian Journal of Botany 82, n. 4 (1 aprile 2004): 443–49. http://dx.doi.org/10.1139/b04-011.

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We studied the competition between mycorrhiza-forming Trientalis europaea L. and nonmycorrhizal Carex bigelowii Torrey ex Schweinitz in a climate chamber experiment. The plants were grown either singly or together with a conspecific or heterospecific individual, with arbuscular mycorrhizal inoculum present or absent. Inoculated T. euro paea formed abundant arbuscular mycorrhizal structures, but the mycorrhizae did not affect its biomass or the whole plant's relative growth rate (RGR). Carex bigelowii did not form mycorrhizae, but its shoot biomass and RGR were lower in the inoculated pots. The presence of a conspecific or heterospecific plant had no effect on the shoot biomasses or RGR of either plant species. Mycorrhizal inoculation increased the root/shoot ratio of C. bigelowii in all competition treatments. The presence of C. bigelowii decreased the root/shoot ratio of T. europaea in both mycorrhizal and nonmy corrhizal state. Mycorrhizal inoculum thus had a direct negative effect on the growth of a nonmycorrhizal plant. The result suggests that although mycorrhizae may not always directly affect the performance of the host plant, they may possibly increase the host plant performance in relation to nonmycorrhizal neighbours. Mycorrhizal inoculum and mycorrhizal symbiosis may increase asymmetry of interspecific competition, which may facilitate the coexistence of plant species in cases when a larger individual is more negatively affected.Key words: arbuscular mycorrhiza, competitive asymmetry, micropropagation.
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Ramakrishnan, K., e G. Bhuvaneswari. "Influence on Different Types of Mycorrhizal Fungi on Crop Productivity in Ecosystem". International Letters of Natural Sciences 38 (maggio 2015): 9–15. http://dx.doi.org/10.18052/www.scipress.com/ilns.38.9.

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Mycorrhizal fungi greatly enhanced the ability of plants to take up phosphorus and other nutrients those are relatively immobile and exist in low concentration in the soil solution. Fungi can be important in the uptake of other nutrients by the host plant. Mycorrhizae establish symbiotic relationships with plants and play an essential role in plant growth, disease protection, and overall soil quality. Of the seven types of mycorrhizae described in current scientific literature (arbuscular, ecto, ectendo, arbutoid, monotropoid, ericoid and orchidaceous mycorrhizae), the arbuscular and ectomycorrhizae are the most abundant and widespread. This chapter presents an overview of current knowledge of mycorrhizal interactions, processes, and potential benefits to society. The molecular basis of nutrient exchange between arbuscular mycorrhizal (AM) fungi and host plants is presented; the role of AM fungi in disease protection, alleviation of heavy metal stress and increasing grain production. Most land plants form associations with mycorrhizal fungi. Mycorrhizas are mutualistic associations between fungi and plant roots. They are described as symbiotic because the fungus receives photo synthetically derived carbon compounds and the plant has increased access to mineral nutrients and sometimes water.
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Lambais, Marcio R., e Mona C. Mehdy. "Differential expression of defense-related genes in arbuscular mycorrhiza". Canadian Journal of Botany 73, S1 (31 dicembre 1995): 533–40. http://dx.doi.org/10.1139/b95-293.

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Differential expression of plant defense related genes may contribute to the control of arbuscular mycorrhiza growth and development. The expression of chitinases, β-1, 3-glucanases, and genes involved in the biosynthesis of isoflavonoid phytoalexins has been studied in these symbiotic associations. Relative to noninfected roots, mycorrhizal roots showed a transient induction of endochitinase activities followed by suppression, under low and high P conditions. The suppression was attenuated under high P. Differential reductions in the steady-state level of mRNAs encoding a basic and an acidic endochitinase was observed. Suppression of β-1, 3-glucanase activities, two glucanase mRNAs, and chalcone isomerase mRNA levels was also observed. In situ localization of several defense-related mRNAs showed a predominant accumulation in the vascular cylinder of mycorrhizal and noninfected roots, under both P conditions. The levels of these mRNAs were systemically suppressed in arbuscular mycorrhizae (AM). Additionally, the accumulation of mRNAs encoding an acidic endochitinase and a β-1, 3-endoglucanase was enhanced in and around cells containing arbuscules, under high and low P conditions, respectively. The differential regulation of defense-related genes may contribute to the observed pattern of intraradical fungal growth. A hypothetical model for the functional roles and regulation of endochitinases and β-1, 3-endoglucanases in arbuscular mycorrhiza is proposed. Key words: arbuscular mycorrhiza, differential gene expression, plant defense genes, chitinases, β-1, 3-glucanases, phosphate.
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Klironomos, John N. "Arbuscular mycorrhizae of Acer saccharum in different soil types". Canadian Journal of Botany 73, n. 11 (1 novembre 1995): 1824–30. http://dx.doi.org/10.1139/b95-193.

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Differences in propagule levels and in the colonization of Acer saccharum feeder roots by arbuscular mycorrhizal fungi in maple forests distributed across three different soil types (brunisols, luvisols, podzols) were investigated. All forest stands were located in southern Ontario. Acer saccharum was the dominant tree species, making up at least 75% of all trees. Results show that arbuscular mycorrhizae can dominate in different soil types, even in podzolic soils with moder-type humus, which typically support ectomycorrhizal associations. In fact, total hyphal colonization of A. saccharum roots and the capacity of the soil to initiate infection units were highest in the podzolic soils compared with those in brunisolic and luvisolic soils. In brunisolic soils, the roots exhibited high arbuscular colonization, low coil colonization, low vesicular colonization, and relatively moderate sporulation levels. In luvisolic soils, colonization was similar to that of brunisols; however, spore densities were lower. Roots in podzolic soils showed very different trends, with a low occurrence of arbuscules, high levels of hyphal coils and vesicles, and much higher spore densities. Soil type can account for much of the variability in arbuscular mycorrhizal structure and functioning that occurs among different locations. Key words: arbuscular mycorrhizae, Acer saccharum, brunisol, luvisol, podzol.
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Kasowska, Dorota. "Mycorrhizal status of plants in two successional stages on spoil heaps from fireloam mining in Lower Silesia (SW Poland)". Acta Societatis Botanicorum Poloniae 71, n. 2 (2014): 155–61. http://dx.doi.org/10.5586/asbp.2002.018.

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The mycorrhizal status of two plant communities representing an initial stage (1-2 year-old) and a 8-9-year-old stage of succession on spoil heaps from fireloam mining in Lower Silesia, Poland, was determined. In the initial stage, the mycorrhizal structures were not observed in 39% of the investigated species; they were members of the <em>Polygonaceae</em>, <em>Chenopodiaceae</em> and <em>Poaceae</em> families. The relative cover of non-mycorrhizal plants exceeded 50% and the major role was played by the <em>Polygonum aviculare</em> population, which predominated the whole community. Mycorrhizal species (arbuscular mycorrhizae) contributed to 61 % of the composition of the initial phyto-coenosis. The most numerous taxa were those with 20-40% of the root length colonized, with a small number of arbuscules (0.2-3.1% of the root length containig arbuscules) and no vesicles. In the advanced stage of succession, mycorrhizal plants definitely dominated and the major role was played by the <em>Tussilago farfara</em> population. Compared with the initial stage, the later one also harboured more plants with mycorrhizas occupied &gt;40% of the root length, as well as containing numerous arbuscules (&gt;20% of the root length) and vesicles. The non-mycorrhizal species, i.e., <em>Equisetum arvense</em> and <em>Poa compressa</em>, represented 11 % o': the community composition and their relative cover amounted to 3%. Despite the relatively frequent occurrence of the arbuscular mycorrhizae in the initial stage of succession, the qualitative properties of the colonization indicated a low effectiveness of symbiosis. This could be caused by the lack of adaptation of the fungal symbiont to the edaphic conditions which were changed after disturbance.
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Geil, R. D., e F. C. Guinel. "Effects of elevated substrate–ethylene on colonization of leek (Allium porrum) by the arbuscular mycorrhizal fungus Glomus aggregatum". Canadian Journal of Botany 80, n. 2 (1 febbraio 2002): 114–19. http://dx.doi.org/10.1139/b01-135.

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There are very few studies of hormonal regulation of arbuscular mycorrhiza formation that include the gaseous hormone ethylene. Ethylene is considered inhibitory to the formation of arbuscular mycorrhizae; however, very low concentrations may promote their formation. We used an improved method of exogenous ethylene application to determine whether ethylene concentration dependent changes in colonization occur in the leek (Allium porrum L. cv. Giant Musselburgh) – Glomus aggregatum Schenck & Smith emend. Koske system. This improved method allowed for a continuous flow of constant concentration of the gas to be applied to a substrate. The 0.6 µL/L substrate–ethylene treatment reduced both root and leaf length and resulted in significantly lower arbuscular colonization compared with controls, whereas the 0.3 µL/L treatment reduced root length only and did not significantly affect colonization levels. Despite continuous application of exogenous ethylene, the amount of ethylene detected in inoculated substrates was reduced to near zero 20 days after inoculation. This decrease may be either due to an increased capacity for ethylene oxidation by arbuscular mycorrhizal roots or because arbuscular mycorrhizal fungi (or other microbes in the pot-cultured inoculum) are capable of metabolizing ethylene. The present study highlights the need for investigations into arbuscular mycorrhizal fungal physiology and the mechanisms by which ethylene regulates arbuscular mycorrhiza formation.Key words: arbuscular mycorrhiza, colonization, exogenous ethylene, monocot.
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Agusrianto Yusuf. "THE ROLES OF ARBUSCULAR MYCORRHIZAE IN SUPPORTING THE MANGROVE GROWTH". Journal of Health, Technology and Science (JHTS) 2, n. 1 (11 aprile 2021): 71–79. http://dx.doi.org/10.47918/jhts.v2i1.221.

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The current study aims to determinate the potential of Arbuscular mycorrhizae in supporting the mangrove growth, the role of Arbuscular mycorrhizae on the improvement of mangrove growth in terms of its colonization level with the mangrove roots, the mangrove ability of Arbuscular mycorrhizae in the way of supporting the rehabilitation of mangroves, and giving the recommendation to the local government related to the potential of mycorrhizal fungi in rehabilitating the degraded magrove areas living in the coastal areas of Kwandang, North Gorontalo regency. Moreover, this study used a descriptive qualitative analysis method using ex-post-facto approach. To collect the data, it used a pruposive sampling on rhizosfer and mangrove roots in order to observe the spore density, the diversity and the mycorrhizal colonization. The results of this study show that the ability of Arbuscular mycorrhizae in supporting the mangrove growth is categorized in the high level. It can be seen from the spora density. On average in research location, the number of the spores that were successfully isolated is 42 spores/ 100 grams of soil. Arbuscular mycorrhizae has a role in the way of increasing the mangrove growth. This can be seen from the high percentage of colonization with mangrove roots whereas 57,87%.
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Kormanik, Paul P. "Development of vesicular–arbuscular mycorrhizae in a young sweetgum plantation". Canadian Journal of Forest Research 15, n. 6 (1 dicembre 1985): 1061–64. http://dx.doi.org/10.1139/x85-172.

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Sweetgum seedlings with vesicular–arbuscular mycorrhizae formed by Glomusetunicatum or Glomusdeserticola in nursery soil with 30 ppm available phosphorus (P) and nonmycorrhizal seedlings grown in nursery soil with 800 ppm available P were outplanted and whole trees were excavated periodically over the next 5 years in the plantation to follow mycorrhizal development. Four months after outplanting, roots of all initially nonmycorrhizal seedlings had formed vesicular–arbuscular mycorrhizae and the degree of root colonization was comparable to that of initially vesicular–arbuscular mycorrhizal seedlings. New feeder roots did not develop on seedlings of any treatment until almost 5 months after planting. By the end of the first growing season and for the remainder of the study, vesicular–arbuscular mycorrhizae development was approximately the same on all seedlings. The proportion of feeder roots colonized by vesicular–arbuscular mycorrhizal fungi stabilized at 65 to 70%; approximately 56% of the cortical tissues of all feeder roots were colonized with arbuscles, vesicles, and hyphae. Periodic assays of the soil in the plantation showed that vesicular–arbuscular mycorrhizal fungal spores gradually declined from an initial high of 3600 spores to 620 spores per 100-cm3 soil sample after 5 years. This decline was probably caused by crown closure of the sweetgum trees which gradually suppressed understory vegetation.
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Tesi sul tema "Arbuscular mycorrhizae"

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Geil, Ryan David. "Effects of exogenous ethylene on the formation of arbuscular mycorrhizae". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ56326.pdf.

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Smith, Caleb M. "Bioconcentration and Morphological Effects of Triclosan on Three Species of Wetland Plants". Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc271900/.

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Triclosan (TCS) is an antimicrobial compound found in several types of common household products. After being washed down the drain, TCS will then end up in the local watershed. Although numerous studies have been conducted to evaluate the fate and effects of TCS in aquatic environments, there have been no studies evaluating the role arbuscular mycorrhizal fungi (AM) play in a plants response to TCS exposure. Three species of wetland plants native North Texas were inoculated with AM spores and exposed to 0, 0.4 g/L and 4.0 g/L TCS concentrations. Root morphology of E. prostrata and S. herbacea showed AM and exposure responses. S. herbacea produced the greatest amounts biomass and TCS bioaccumulation, in all but one treatment. It also displayed opposing results to E. prostrata in measures of root length, root surface area, relative root mass, relative shoot mass and shoot:root ratio. TCS root tissue concentrations increased with increased exposures for both E. prostrata and S. herbacea. Even though E. prostrata had the lowest levels in each measure of biomass production, it had the highest amount of root TCS bioaccumulation in the AM inoculated 4.0 g/L treatment. H. laevis was between the other two species in terms of biomass production, and did not demonstrate any exposure or inoculation effects in morphology or TCS accumulation. Overall, no clear patterns were detected, which highlights the fact that further study is required to completely understand the effects compounds like TCS can have on plant community structure, and ultimately ecosystem function.
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Toljander, Jonas. "Interactions between soil bacteria and arbuscular mycorrhizal fungi /". Uppsala : Department of Forest Mycology and Pathology, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/200639.pdf.

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Jenkins, Amy Miller. "Seed banking and vesicular-arbuscular mycorrhizae in pasture restoration in Central Florida". [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0001399.

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Amerian, Mohammad Reza. "Effects of VA mycorrhizae and drought on the physiology of maize and bean grown singly and intercropped". Thesis, University of Newcastle Upon Tyne, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247833.

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Seymour, Nicole Pamela. "Responses of linseed to vesicular-arbuscular mycorrhizae, phosphorus and zinc in a vertisol /". [St. Lucia, Qld.], 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17149.pdf.

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Sinclair, Grant. "Influence of Colonization by Arbuscular Mycorrhizal Fungi and a Root Endophyte on Selected Strawberry Cultivars Under Salt Conditions". Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/26124.

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Two factorial greenhouse experiments were performed to determine the effects of four arbuscular mycorrhizal fungi (AMF) species (Glomus arenarium, Funneliformis caledonius, F. mosseae, and Rhizophagus irregularis) and a root endophyte (Piriformospora indica) on four ‘day-neutral’ strawberry (Fragaria × ananassa Duch.) cultivars (‘Albion’, ‘Charlotte’, ‘Mara des Bois’, and ‘Seascape’), and mixed-AMF species (R. irregularis + F. mosseae) on cv. ‘Seascape’, under salt conditions (0-200 mM NaCl). In its biomass, ‘Seascape’ was more tolerant to salinity than the other cultivars. Cultivars responded differently to fungal inoculation as to salinity. G. arenarium had a negative effect on plant growth and ‘Mara des Bois’ responded negatively to inoculation. Among the remaining inoculants and cultivars, fungal-symbiosis was beneficial to growth. R. irregularis alleviated the symptoms of salt stress and improved fruit quality to a higher degree than the other AMF species and the root endophyte. Our results support the use of bio-inoculants in salty horticultural areas.
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Cooke, Margaret Anne. "Vesicular-arbuscular mycorrhizae and base cation fertilization in sugar maple (Acer saccharum marsh L.)". Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=39428.

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Under field conditions, vesicles were the most frequently observed mycorrhizal structures in sugar maple, while greenhouse grown seedlings formed more arbuscules. Seasonal fluctuations of vesicular-arbuscular mycorrhizae existed. Mycorrhizal associations formed within 30 days in the greenhouse. Arbuscules were usually formed from hyphal coils and occasionally from linear hyphae spreading from cell to cell. Degenerating arbuscules were not observed. The addition of basic cations increased the number of vesicles formed and decreased the overall infection rates and seedling growth. The uptake of calcium, magnesium, and nitrogen decreased, and potassium uptake increased as fertilization rates increased. Positive correlations existed between the incidence of arbuscules and plant growth and health and between the incidence of arbuscules and the uptake of calcium, magnesium, nitrogen and phosphorus, and with the uptake ratios and these elements with potassium. This suggests that vesicular-arbuscular mycorrhizae may in some way be regulating ionic balance in these seedlings.
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Chaudhry, Tariq M., University of Western Sydney e of Informatics Science and Technology Faculty. "Biogeochemical characterization of metalliferous wastes and potential role of arbuscular mycorrhizae in their phytoremediation". THESIS_FIST_XXX_Chaudhry_T.xml, 1999. http://handle.uws.edu.au:8081/1959.7/442.

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Phytoremediation is an innovative technology employing plants for reclamation of soils that have been polluted by industrial contaminants. While it is frequently slower than traditional physicochemical remediation techniques, there are, however, many significant advantages including simplicity, low cost, improvement of soil structure and microbiological fertility. While various hyperaccumulators have been reported from Europe and the USA, there is a need to identify Australian species. This study reports a number of metal accumulators following a soil and vegetation survey of two metal contaminated sites in New South Wales, the spoil (filtercake) heaps of the BHP (Broken Hill Propriety ) steelworks at Port Kembla and the abandoned mine at Sunny Corner. BHP is the largest manufacturer of steel in Australia. The Port Kembla is the largest single steel manufacturing site. Solid by-products from this site totalled 3.1 million tons in 1988. The Sunny Corner mine site was mainly a silver mine which operated over approximately 100 hectares 1184 to 1922 and produced over 100 tonnes of silver during that period. The soil and water in and around the site is heavily contaminated with metals and is distinctly acidic. It was concluded that Ricinus communis, Sonchus oleraceus, baeckea utilis, Poa labillardieri and Pinus radiata are options for heavy metal phytoremediation of contaminated Australian soils. Arbuscular Mycorrhizal infection (particular with Glomus and Gigaspora strains) should be promoted for optimum growth.
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Chaudhry, Tariq M. "Biogeochemical characterization of metalliferous wastes and potential role of arbuscular mycorrhizae in their phytoremediation /". Campbelltown, N.S.W. : University of Western Sydney, Macarthur, Faculty of Informatics, Science and Technology, 1999. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030811.122338/index.html.

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Libri sul tema "Arbuscular mycorrhizae"

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Cockrell, J. R. Recolonization of vesicular-arbuscular mycorrhizae on a reclaimed strip mine in North Dakota. S.l: s.n, 1990.

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Habte, M. Arbuscular mycorrhizas: Producing and applying arbuscular mycorrhizal inoculum. [Honolulu?]: CTAHR, 2001.

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Ferrol, Nuria, e Luisa Lanfranco, a cura di. Arbuscular Mycorrhizal Fungi. New York, NY: Springer US, 2020. http://dx.doi.org/10.1007/978-1-0716-0603-2.

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Koltai, Hinanit, e Yoram Kapulnik. Arbuscular mycorrhizas: Physiology and function. 2a ed. Dordrecht: Springer Science+Business Media, 2010.

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Germida, J. J. Growth and nutrition of wheat as affected by interactions between VA mycorrhizae and plant growth-promoting rhizobacteria (PGPR): Final report. [Regina, Sask.]: Saskatchewan Agriculture and Food, 1995.

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Souza, Tancredo. Handbook of Arbuscular Mycorrhizal Fungi. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24850-9.

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Kapulnik, Yoram, e David D. Douds, a cura di. Arbuscular Mycorrhizas: Physiology and Function. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-017-0776-3.

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Koltai, Hinanit, e Yoram Kapulnik, a cura di. Arbuscular Mycorrhizas: Physiology and Function. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-9489-6.

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Thangadurai, D. Mycorrhizal biotechnology. Enfield, NH: Science Publishers, 2010.

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Soil Microbial Systems Laboratory (U.S.). In-depth laboratory review October 19-21, 1994: Soil Microbial Systems Laboratory : soil quality, sustainable agriculture, composted waste, arbuscular mycorrhizae, pesticide metabolism, bioremediation, biocontrol management system. Beltsville, Md.]: The Laboratory, 1994.

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Capitoli di libri sul tema "Arbuscular mycorrhizae"

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Pinhey, Sally, e Margaret Tebbs. "The role of fungi." In Plants for soil regeneration: an illustrated guide, 23–27. Wallingford: CABI, 2022. http://dx.doi.org/10.1079/9781789243604.0005.

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Abstract This chapter focuses on the role of fungi. Fungi are a vital part of the mixture of microorganisms found in healthy soil. Fungal associations between plant roots and beneficial fungi are known as mycorrhizae (meaning 'fungus' and 'root'), and form a beneficial or symbiotic relationship with plants growing in the soil. Mycorrhizal fungi also facilitate plant interactions with other soil microbes. These include pathogens, and bacteria that produce vitamins and protect against attack. The most common of the mycorrhizae are divided into the following: (1) ectomycorrhizae; (2) endomycorrhizae; (3) arbuscular mycorrhizae; (4) ericoid mycorrhizae; and (5) orchid mycorrhiza. The role of saprophytes, pathogens and actinomycetes are also discussed.
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Vance, Carroll P. "Plants without arbuscular mycorrhizae". In Plant Ecophysiology, 117–42. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-8435-5_6.

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Johnson, Nancy Collins, e F. L. Pfleger. "Vesicular-Arbuscular Mycorrhizae and Cultural Stresses". In Mycorrhizae in Sustainable Agriculture, 71–99. Madison, WI, USA: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, 2015. http://dx.doi.org/10.2134/asaspecpub54.c4.

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Sylvia, David M., e Stephen E. Williams. "Vesicular-Arbuscular Mycorrhizae and Environmental Stress". In Mycorrhizae in Sustainable Agriculture, 101–24. Madison, WI, USA: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, 2015. http://dx.doi.org/10.2134/asaspecpub54.c5.

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Nasim, Ghazala. "Arbuscular Mycorrhizae for Sustainable Agriculture". In Crop Production for Agricultural Improvement, 581–618. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-4116-4_23.

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Jobim, K., I. R. Silva, D. M. A. Assis, L. C. Vieira, D. K. A. Silva, F. Oehl, L. C. Maia e B. T. Goto. "Arbuscular Mycorrhizae in Coastal Areas". In Recent Advances on Mycorrhizal Fungi, 101–8. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-24355-9_9.

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Miller, R. Michael, Gail W. T. Wilson e Nancy C. Johnson. "Arbuscular Mycorrhizae and Grassland Ecosystems". In Biocomplexity of Plant-Fungal Interactions, 59–84. Oxford, UK: Wiley-Blackwell, 2012. http://dx.doi.org/10.1002/9781118314364.ch3.

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Linderman, R. G. "Vesicular-Arbuscular Mycorrhizae and Soil Microbial Interactions". In Mycorrhizae in Sustainable Agriculture, 45–70. Madison, WI, USA: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, 2015. http://dx.doi.org/10.2134/asaspecpub54.c3.

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Varma, A. "Hydrolytic Enzymes from Arbuscular Mycorrhizae: the Current Status". In Mycorrhiza, 373–89. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-662-03779-9_15.

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Panwar, Jitendra, R. S. Yadav, B. K. Yadav e J. C. Tarafdar. "Arbuscular Mycorrhizae: A Dynamic Microsymbiont for Sustainable Agriculture". In Mycorrhizae: Sustainable Agriculture and Forestry, 159–76. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-8770-7_6.

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Atti di convegni sul tema "Arbuscular mycorrhizae"

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Subaedah, St, e Andi Ralle. "Application of Arbuscular Mycorrhizae and Compost on Growth and Yield of Soybean". In International Conference on Engineering, Technology and Social Science (ICONETOS 2020). Paris, France: Atlantis Press, 2021. http://dx.doi.org/10.2991/assehr.k.210421.109.

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Mazurek, B. G., e I. S. Zhebrak. "Features of mycorrhiza Trifolium pratense L. in various phytocenoses". In 2nd International Scientific Conference "Plants and Microbes: the Future of Biotechnology". PLAMIC2020 Organizing committee, 2020. http://dx.doi.org/10.28983/plamic2020.166.

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In four meadow phytocenoses after the restoration of anthropogenic biotopes, a high degree of mycotrophy of Trifolium pratense was established. Arbuscular mycorrhizal fungi (arbuscules, vesicles, free and intra-root nonseptic mycelium) and dark-colored septic endophytic fungi (sporocarpies and free septic mycelium) were revealed in the roots of the studied plants.
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Kryukov, А. А., A. O. Gorbunova, Sh K. Kurbanniyazov, Yu V. Mikhaylova, A. V. Rodionov, M. F. Shishova, P. M. Zhurbenko e A. P. Yurkov. "Molecular-genetic identification of arbuscular mycorrhiza fungi from Teberda natural reserve". In 2nd International Scientific Conference "Plants and Microbes: the Future of Biotechnology". PLAMIC2020 Organizing committee, 2020. http://dx.doi.org/10.28983/plamic2020.134.

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Arbuscular mycorrhiza fungi of soil samples from North Caucasus were identified via Illumina Miseq and universal primers for ITS region. It was shown, that both ITS1 and ITS2 are necessary for identification.
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Marzec, K. M., M. Murowana, K. Turnau, L. M. Proniewicz, M. Barańska, P. M. Champion e L. D. Ziegler. "Identification of Arbuscular Mycorrhizal Fungal (AMF) Spore Components". In XXII INTERNATIONAL CONFERENCE ON RAMAN SPECTROSCOPY. AIP, 2010. http://dx.doi.org/10.1063/1.3482547.

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Abdurashytov, S. F., E. V. Puzanova, K. S. Gritsevich, A. A. Zubochenko e V. K. Zakharova. "Study of the development of arbuscular mycorrhizal fungi in the saline soils of Crimea". In РАЦИОНАЛЬНОЕ ИСПОЛЬЗОВАНИЕ ПРИРОДНЫХ РЕСУРСОВ В АГРОЦЕНОЗАХ. Federal State Budget Scientific Institution “Research Institute of Agriculture of Crimea”, 2020. http://dx.doi.org/10.33952/2542-0720-15.05.2020.25.

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It is known that arbuscular mycorrhiza (AM) fungi are able to mitigate the effect of various negative environmental factors on plants. Therefore, the aim of our research was to determine the most active AM fungi populations in saline soils of the Crimean Peninsula to select stress-resistant isolates. The spores were isolated by wet sieving. Mycorrhization was visualized by staining with black ink and studied quantitatively under a stereomicroscope. In 2019, 15 soil-plant samples from 4 locations of the salinity soils were sampled: Lake Achi (AB) and the nearby agrocenosis (PAB), Koyashskoye (KO), Kirkoyashskoye (PKP) and agrocenosis near it (KP), Chokrak (CH). The highest content of chlorine anions (119.5 mg) and bicarbonate anions (610.0 mg) was noted in the area near Lake Kirkoyashskoye. The smallest salinity was observed at arable land KP (8.5 and 229.0 mg). Plowing led to a decrease in the number of AM fungi spores in the studied sections of PAB by 80.3% and KP by 47.6% compared with the AB and PKP. The frequency of occurrence and the intensity of mycorrhizal colonization in plant roots on the shores of Lakes Achi and Kirkoyashskoye were 70.0-72.3% and 28.0-43.9%, while the same for the plowing areas around them were lower by 28.5-54.1% and 18.0-32.2%, respectively. In our study, there was no strict correlation between the number of spores and the estimated environmental conditions. Soil-plant samples and the spores isolated from them were used as inoculums for obtaining new AM fungal isolates with a stress resistance property.
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Zhukov, V. A., A. M. Afonin, G. A. Akhtemova, A. D. Bovin, A. V. Dolgikh, A. P. Gorshkov, E. S. Gribchenko et al. "Study of the garden pea (Pisum sativum L.) symbioses in post-genomic era". In 2nd International Scientific Conference "Plants and Microbes: the Future of Biotechnology". PLAMIC2020 Organizing committee, 2020. http://dx.doi.org/10.28983/plamic2020.289.

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Mutualistic symbioses formed by garden pea have been studied with use of ‘omic’ technologies in order to gain a new understanding of molecular mechanisms of beneficial effect that microsymbionts have on seed yield and quality. Keywords: garden pea, transcriptomics, nitrogen fixation, arbuscular mycorrhiza, PGPB
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Getman-Pickering, Zoe. "Emergency alert! Plants communicate about herbivory through arbuscular mycorrhizal fungi". In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.115445.

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"Arbuscular Mycorrhizal Association and Its Influence on Arachis Hypogea L." In International Conference on Plant, Marine and Environmental Sciences. International Institute of Chemical, Biological & Environmental Engineering, 2015. http://dx.doi.org/10.15242/iicbe.c0115003.

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Shtark, O. Y., R. K. Puzanskiy, G. S. Avdeeva, V. V. Yemelyanov, M. S. Kliukova, A. L. Shavarda, A. A. Kirpichnikova et al. "Metabolic alterations in pea leaves and roots during arbuscular mycorrhiza development". In 2nd International Scientific Conference "Plants and Microbes: the Future of Biotechnology". PLAMIC2020 Organizing committee, 2020. http://dx.doi.org/10.28983/plamic2020.227.

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A shift in the metabolic profiles of leaves and roots of mycorrhized pea plants towards the profiles of control plants at earlier stages of development was revealed. Thus, mycorrhization led to the retardation of plant development.
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Liu, L. Z., L. C. Song, Z. Q. Gong, Y. L. Zhang e P. J. Li. "Cadmium phytoextraction and rhizospherical properties of marigold affected by arbuscular mycorrhizal fungi". In International Conference on Environmental Science and Biological Engineering. Southampton, UK: WIT Press, 2014. http://dx.doi.org/10.2495/esbe140591.

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Rapporti di organizzazioni sul tema "Arbuscular mycorrhizae"

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Haas, Jerry H., John A. Menge e James Krikun. Utilization of Vesicular-Arbuscular Mycorrhiza in Crop Production. United States Department of Agriculture, agosto 1986. http://dx.doi.org/10.32747/1986.7566726.bard.

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Phillips, Donald, e Yoram Kapulnik. Using Flavonoids to Control in vitro Development of Vesicular Arbuscular Mycorrhizal Fungi. United States Department of Agriculture, gennaio 1995. http://dx.doi.org/10.32747/1995.7613012.bard.

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Vesicular-arbuscular mycorrhizal (VAM) fungi and other beneficial rhizosphere microorganisms, such as Rhizobium bacteria, must locate and infect a host plant before either symbiont profits. Although benefits of the VAM association for increased phosphorous uptake have been widely documented, attempts to improve the fungus and to produce agronomically useful amounts of inoculum have failed due to a lack of in vitro production methods. This project was designed to extend our prior observation that the alfalfa flavonoid quercetin promoted spore germination and hyphal growth of VAM fungi in the absence of a host plant. On the Israeli side of the project, a detailed examination of changes in flavonoids and flavonoid-biosynthetic enzymes during the early stages of VAM development in alfalfa found that VAM fungi elicited and then suppressed transcription of a plant gene coding for chalcone isomerase, which normally is associated with pathogenic infections. US workers collaborated in the identification of flavonoid compounds that appeared during VAM development. On the US side, an in vitro system for testing the effects of plant compounds on fungal spore germination and hyphal growth was developed for use, and intensive analyses of natural products released from alfalfa seedlings grown in the presence and absence of microorganisms were conducted. Two betaines, trigonelline and stachydrine, were identified as being released from alfalfa seeds in much higher concentrations than flavonoids, and these compounds functioned as transcriptional signals to another alfalfa microsymbiont, Rhizobium meliloti. However, these betaines had no effect on VAM spore germination or hyphal growth i vitro. Experiments showed that symbiotic bacteria elicited exudation of the isoflavonoids medicarpin and coumestrol from legume roots, but neither compound promoted growth or germination of VAM fungi in vitro. Attempts to look directly in alfalfa rhizosphere soil for microbiologically active plant products measured a gradient of nod-gene-inducing activity in R. meliloti, but no novel compounds were identified for testing in the VAM fungal system in vitro. Israeli field experiments on agricultural applications of VAM were very successful and developed methods for using VAM to overcome stunting in peanuts and garlic grown in Israel. In addition, deleterious effects of soil solarization on growth of onion, carrot and wheat were linked to effects on VAM fungi. A collaborative combination of basic and applied approaches toward enhancing the agronomic benefits of VAM asociations produced new knowledge on symbiotic biology and successful methods for using VAM inocula under field conditions
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Lee, Caitlin. Assessment of Arbuscular Mycorrhizal Symbiosis on Invasion Success in Brachypodium sylvaticum. Portland State University Library, gennaio 2000. http://dx.doi.org/10.15760/etd.2106.

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Workman, Rachael. Effects of Arbuscular Mycorrhizal Fungal Infection and Common Mycelial Network Formation on Invasive Plant Competition. Portland State University Library, gennaio 2000. http://dx.doi.org/10.15760/etd.2024.

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Cheeke, Tanya. An Evaluation of the Nontarget Effects of Transgenic Bacillus thuringiensis Maize on Arbuscular Mycorrhizal Fungi in the Soil Ecosystem. Portland State University Library, gennaio 2000. http://dx.doi.org/10.15760/etd.1027.

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Kapulnik, Yoram, Maria J. Harrison, Hinanit Koltai e Joseph Hershenhorn. Targeting of Strigolacatones Associated Pathways for Conferring Orobanche Resistant Traits in Tomato and Medicago. United States Department of Agriculture, luglio 2011. http://dx.doi.org/10.32747/2011.7593399.bard.

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This proposal is focused on examination of two plant interactions: parasitic with Orobanche, and symbiosis with arbuscular mycorrhiza fungi (AMF), and the involvement of a newly define plant hormones, strigolactones (SLs), in these plant interactions. In addition to strigolactones role in regulation of above-ground plant architecture, they are also known to be secreted from roots, and to be a signal for seed germination of the parasitic plants Orobanche. Moreover, secreted strigolactones were recognized as inducers of AMFhyphae branching. The present work was aimed at Generation of RNAi mutants of both tomato and Medicago, targeting multiple genes that may be involved in strigolactone production, carotenoid biosynthesis pathway, Pi signaling or other metabolic pathways, and hence affect AMF colonization and/or Orobanche resistance. Following the newly formed and existing RNAi mutants were examined for AMF colonization and Orobanche resistance. At the first phase of this project Orobanche seed germination assays and AMF colonization were examined in intact plants. These assays were shown to be effective and resulted with enhancement of Orobanche seed germination and AMF colonization in WT tomato plants, whereas roots of strigolactones impaired lines did not result with Orobanche seed germination and mycorrhiza colonization. Unexpectedly, root organ cultures (ROC) that were produced from the same wild type (WT) and mutant lines did not induce the Orobanche seed germination and AMFhyphal branching. This implies that under in vitro conditions ROC cultures are missing an important component for induction of Orobanche seed germination and AMFhyphal branching. In another line of experiments we have tested transgenic lines of Medicagotruncatula for AMFhuyphal branching and Orobanche seed germination assays. These lines included lines silenced for a GRAS transcription factor (RNAi 1845), an NBS-LRR type resistance gene (RNAi 1847), a kinase (RNAi 2403) and a protein of unknown function (RNAi 2417). In all cases, five independent transgenic root lines showed altered AMFphenotypes with reduced or aberrant colonization patterns. Following, we transformed tomato plants with the M. truncatulaTC 127050 PhosphoinositidekinaseRNAi construct. Transgenic lines that contained GUS constructs were used as control. All transgenic lines showed reduced level of Orobanche seed germination, masking any strigoalctones-specific effect. The research demonstrated that SLs production may not be examined in ROC –based bioassays. It was shown by the 3 independent assays employed in this project that none of the recognized characters of SLs may be reflected in these bioassays. However, when the whole plant root exudates were examined, SLs activity in root exudates was demonstrated. Hence, it can be concluded that the presence of an intact shoot, and possibly, shoot factors, may be necessary for production of SLs in roots. Another point of interest that rises from these results is that the presence of SLs is not necessary for AMF completion of life cycle. Hence, it may be concluded that SLs are important for AMFhyphal branching, before symbiosis, but not essential for AMF colonization and life cycle completion under ROC system conditions.
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