Relevant bibliographies by topics / Nutrient mobilisation

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  2. Dissertations / Theses
  3. Book chapters

Academic literature on the topic 'Nutrient mobilisation'

Author: Grafiati
Published: 19 February 2023

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Journal articles on the topic "Nutrient mobilisation"

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Ross, S. M., and D. C. Malcolm. "Modelling nutrient mobilisation in intensively mixed peaty heathland soil." Plant and Soil 107, no. 1 (March 1988): 113–21. http://dx.doi.org/10.1007/bf02371552.

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Bou, Marta, Xinxia Wang, Marijana Todorčević, Tone-Kari Knutsdatter Østbye, Jacob Torgersen, and Bente Ruyter. "Lipid Deposition and Mobilisation in Atlantic Salmon Adipocytes." International Journal of Molecular Sciences 21, no. 7 (March 27, 2020): 2332. http://dx.doi.org/10.3390/ijms21072332.

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The present study aimed to elucidate how Atlantic salmon adipocytes pre-enriched with palmitic (16:0, PA), oleic (18:1n−9, OA), or eicosapentaenoic (20:5n−3, EPA) acid respond to a fasting condition mimicked by nutrient deprivation and glucagon. All experimental groups were supplemented with radiolabeled PA to trace secreted lipids and distribution of radioactivity in different lipid classes. There was a higher content of intracellular lipid droplets in adipocytes pre-enriched with OA than in adipocytes pre-enriched with PA or EPA. In the EPA group, the radiolabeled PA was mainly esterified in phospholipids and triacylglycerols, whereas in the OA and PA groups, the radioactivity was mainly recovered in phospholipids and cholesterol-ester. By subjecting the experimental groups to nutrient-deprived media supplemented with glucagon, lipolysis occurred in all groups, although to a lower extent in the OA group. The lipids were mainly secreted as esterified lipids in triacylglycerols and phospholipids, indicating mobilization in lipoproteins. A significant proportion was secreted as free fatty acids and glycerol. Leptin secretion was reduced in all experimental groups in response to fasting, while the mitochondria area responded to changes in the energy supply and demand by increasing after 3 h of fasting. Overall, different lipid classes in adipocytes influenced their mobilization during fasting.
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Meney, KA, JS Pate, and KW Dixon. "Phenology of Growth and Resource Deployment in Alexgeorgea nitens (Nees) Johnson and Briggs (Restionaceae), a Clonal Species From South-Western Western Australia." Australian Journal of Botany 38, no. 6 (1990): 543. http://dx.doi.org/10.1071/bt9900543.

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Seasonal patterns are described for growth and partitioning of dry matter and selected nutrients between different age classes and types of plant organs of ramets of non-reproductive, presumed female clones of Alexgeorgea nitens in native sandplain habitat at Eneabba, south-western Western Australia. New rhizome extension and associated production of new culms and nodal roots are initiated following onset of rain in autumn. Rate of growth of these parts remains slow through winter, peaks in spring and early summer and then becomes much reduced in the hot, dry summer. The bulk (87%) of the season's dry matter increment of new ramet parts is estimated to be derived from current photosynthesis, the remaining 13% by mobilisation of dry matter from older parts of the ramet, especially from 1- and 2-yearold culms. Growth of new organs is severely reduced by removal or shading of culms at the beginning of the season. Older culms and rhizomes carry substantial starch reserves, but mobilisation of this reserve accounts for 2% at most of the dry matter gain of new organs of intact ramets, 19% of that of shaded and 65% of detopped ramets. A substantial fraction of the starch pool of a rhizome segment normally remains until its senescence, possibly as a long-term energy reserve, utilisable after destruction of above-ground parts by fire or grazing. Concentrations of N, P, K, Ca and Mg in organ dry matter of A. nitens are generally very low in comparison with species other than those Cyperaceae or Restionaceae from similar habitats. There is no evidence of preferential storage in below-ground parts, and efficiencies of emptying of nutrient reserves from senescing ramet parts are not high. Mobilisation from older source organs of ramets of intact, unstressed clones is estimated to provide 14% of the new organ's seasonal gain of P, 16% of Mg, 21% of Ca, 22% of N and 58% of K. Annual factorial increases of a ramet in the studied nutrient elements range from 1.3 (for K) to 2.4 (for P), indicating flexibility in exploiting sources of different nutrients as their respective availabilities change from season to season.
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Sapek, Andrzej, Barbara Sapek, Slawomir Chrzanowski, and Marek Urbaniak. "Nutrient mobilisation and losses related to the groundwater level in low peat soils." International Journal of Environment and Pollution 37, no. 4 (2009): 398. http://dx.doi.org/10.1504/ijep.2009.026057.

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Viney, N. R., M. Sivapalan, and D. Deeley. "A conceptual model of nutrient mobilisation and transport applicable at large catchment scales." Journal of Hydrology 240, no. 1-2 (December 2000): 23–44. http://dx.doi.org/10.1016/s0022-1694(00)00320-6.

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Nwachukwu, C. U. "Review article: Nutritional effects on fetal development during gestation in ruminants." Nigerian Journal of Animal Production 47, no. 2 (December 17, 2020): 245–56. http://dx.doi.org/10.51791/njap.v47i2.184.

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Intrauterine growth retardation is a massive problem in animal production as it influencesthe body composition, carcass quality, and impairs health. This condition can lead to areduction in neonatal survival, growth, feed efficiency utilisation, and future production bythe animals. Pregnancy may negatively influence maternal nutritional status because ofincreased uteroplacental blood flow, nutrient mobilisation, and transfer of nutrients from thedam to the fetus. The critical factor for fetal survival and health is an adequate nutrient andoxygen supply to the dam during gestation. This ability is dependent on her nutritionalsupply, body size, body composition, and metabolism during pregnancy. The placenta is aunique organ of reproduction that helps in the exchange of nutrients, respiratory gases andexcretory waste between the mother and offspring. Maternal nutrition restriction inembryonic, placenta and fetal stages of pregnancy can result in metabolic compromise,cardiovascular, renal and adipose tissue dysfunction. The major effects of nutritionalchallenges on fetoplacental growth and development appear to occur when the placenta israpidly developing. Poor nutrition caused by inadequate, excess or imbalanced nutrientintake has been shown to adversely affect subsequent reproductive performance (delayedpuberty, luteal inadequacy, reduced follicular reserve, reduced ovulation, and conceptionrates). Proteins, carbohydrates, fats, minerals and vitamins are key components in animalfeeds that are required for a daily maintenance diet. Amino acids serve as building blocks forproteins and essential precursors for the synthesis of different physiologicalmolecules–hormones, neurotransmitters, nitric oxide, creatine, glutathione, carnitine, andpolyamines.
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Hua, Q. X., J. M. Zhou, H. Y. Wang, C. W. Du, X. Q. Chen, and J. Y. Li. "Effects of modified clinoptilolite on phosphorus mobilisation and potassium or ammonium release in Ferrosols." Soil Research 44, no. 3 (2006): 285. http://dx.doi.org/10.1071/sr05118.

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An investigation was conducted to study effects of the potassium and ammonium saturated clinoptilolite on P availability in Ferrosols. The adsorption and desorption of phosphorus were determined by shaking 2.5 g soil with 0, 0.5, and 2.5 g clinoptilolite at 0.31 or 1.25 mg P/g soil in 50 mL solution for a total of 72 h (24 h for clinoptilolite and 48 h for phosphate). The nutrient concentrations in supernatants were measured by spectrophotometry. Results showed phosphorus solubility was significantly increased with clinoptilolite addition. Increasing the amount of clinoptilolite enhanced the concentration of P up to 6.85 and 41.29 mg/L at 0.31 and 1.25 mg P/g soil, respectively. Correspondingly, the amount of potassium and ammonium released from the clinoptilolite were up to 63.69 and 12.20 mg/L at 0.31 mg P/g soil, and 107.42 and 29.94 mg/L at 1.25 mg P/g soil. Nutrient concentrations in the treatments in which clinoptilolite was added before P were greater than that in the treatments in which P was added prior to clinoptilolite. The results also suggest that potassium and ammonium saturated clinoptilolite can increase P solubility while providing K and NH4 to the soil, a concurrent positive effect for plant growth.
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Khademi, Z., D. L. Jones, M. J. Malakouti, F. Asadi, and M. Ardebili. "Organic acid mediated nutrient extraction efficiency in three calcareous soils." Soil Research 47, no. 2 (2009): 213. http://dx.doi.org/10.1071/sr07179.

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This study was conducted to evaluate the effects of organic acids on the concentrations of metals and anions in soil solution. Three soils with contrasting CaCO3 contents were extracted with organic acid solutions (citrate and oxalate) of different concentrations for different time periods and analysed for Fe, Mn, Zn, Cu, P, and Ca. The soils showed a significant change after the addition of the organic acids to the soil. The mobilisation of metals from the solid phase was dependent on concentration and ionic form of organic acid. High concentrations of citric acid were more effective than oxalate in mobilising Ca, Fe, Mn, and Zn. Overall; oxalate was slightly more effective than citrate in mobilising P. Generally, the higher the organic acid concentration of the extractant solution, the greater was the amount of elements extracted from the soil. Citrate tended to be more effective than oxalate at mobilising elements from the soil. All pH changes were dependent on organic acid concentration.
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Bende-Michl, Ulrike, Kirsten Verburg, and Hamish P. Cresswell. "High-frequency nutrient monitoring to infer seasonal patterns in catchment source availability, mobilisation and delivery." Environmental Monitoring and Assessment 185, no. 11 (June 11, 2013): 9191–219. http://dx.doi.org/10.1007/s10661-013-3246-8.

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Vidal-Durà, Andrea, Ian T. Burke, Douglas I. Stewart, and Robert J. G. Mortimer. "Reoxidation of estuarine sediments during simulated resuspension events: Effects on nutrient and trace metal mobilisation." Estuarine, Coastal and Shelf Science 207 (July 2018): 40–55. http://dx.doi.org/10.1016/j.ecss.2018.03.024.

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Dissertations / Theses on the topic "Nutrient mobilisation"

1

Bollmark, Lars. "Accumulation and mobilisation of nutrient reserves in Salix viminalis /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2000. http://epsilon.slu.se/avh/2000/91-576-5889-7.pdf.

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Simpson, Thomas George. "The effects of deep forest ploughing on soil physical properties, nutrient mobilisation and tree root development." Thesis, University of Aberdeen, 1987. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU010495.

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The effect of deep ploughing indurated upland soils to 90cm was investigated at three sites in North East Scotland. The sites varied in age from recently ploughed to sixteen years old. The profile morphology, disruption of induration and change in rootable volume, the maximum depth of root extension, and root orientation were quantified. The soil moisture regime was monitored over one growing season at Glenbuchat using a series of tensiometers inserted horizontally into the profile face. The deeply buried organic matter remained moist throughout the summer. In contrast organic matter near the surface underwent fluctuating cycles of wetting and drying. The deeper soils showed little response to summer rainfall. The rate of decomposition of the buried organic matter was assessed in three ways. A litterbag study determined the effect of burial on weight loss, nutrient element loss and microbial activity. Anaerobic incubations were used to measure rates of nitrogen mineralisation and the concentration of 'Klason' lignin were used as an indice of decomposition of buried organic matter. At Glenbuchat there was a significant decrease in mineralisable nitrogen and lignin concentration with depth. In contrast the older site at Culloden had the opposite trend with a significant increase with depth. This later result was thought to be due to the death and decay of fine roots.
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Grimal, Jean-Yves. "Influence de l'exsudation racinaire de Zea mays L. Sur mobilisation de formes de phosphore difficilement biodisponibles." Vandoeuvre-les-Nancy, INPL, 1994. http://www.theses.fr/1994INPL058N.

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L’influence de l'exsudation racinaire de Zea mays sur la mobilisation de formes de phosphore difficilement disponibles a été étudiée suivant trois niveaux d'approche. L’étude de l'adsorption d'un modèle d'exsudats (apg) et de mucilages racinaires sur une goethite a montré que l'apg et les mucilages diminuent l'adsorption des ions phosphate. L’effet le plus marqué est constaté lorsque les ions phosphate sont apportés sur le complexe mucilages-goethite. Dans ce cas, le mécanisme mis en jeu est de nature physique. L’enrobage de la goethite a probablement diminué le nombre de sites d'adsorption des ions phosphate. Des cultures en conditions hydroponiques stériles ont permis d'examiner le comportement du maïs en présence d'ions phosphate adsorbés sur une goethite. Dans ces conditions expérimentales, la plante est capable de prélever jusqu'à 23% du phosphore initialement adsorbé. La réponse du maïs à cette contrainte se traduit aussi par une modification des flux de phosphore à l'intérieur de la plante. Le rôle des phosphatases racinaires dans l'acquisition du phosphore a été étudié en mettant à la disposition du maïs le glucose-1-phosphate et le myoinositol hexaphosphate. Les activités phosphatasiques ont été détectées à la surface des racines, dans la solution nutritive ainsi qu’à la surface de la goethite. Les possibilités d'action des phosphatases sont liées à l'accessibilité des phosphates organiques et des enzymes, adsorption sur les colloïdes ou précipitation. Ces résultats montrent que les composés diffusibles (mucilages) par leur action physique et les composés carbonés diffusibles (phosphohydrolases notamment) contribuent à augmenter la mobilité du phosphore à partir de sources peu accessibles pour la plante dans la rhizosphère
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Book chapters on the topic "Nutrient mobilisation"

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Du Laing, Gijs, Tom Hanssen, Geert Bogaert, and Filip M. G. Tack. "Factors Affecting Metal Mobilisation During Oxidation of Sulphidic, Sandy Wetland Substrates." In Water and Nutrient Management in Natural and Constructed Wetlands, 287–97. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-9585-5_21.

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Laslo, Éva, Éva György, Beáta Ábrahám, and Gyöngyvér Mara. "Bacterial Strains with Nutrient Mobilisation Ability from Ciuc Mountains (Transylvania Region, Romania)." In Plant-Microbe Interactions in Agro-Ecological Perspectives, 531–48. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-5813-4_27.

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