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From soil to plant,the journey of Pthrough trophicrelationships andectomycorrhizalassociation Adeline BecquerJean TrapUsman Irshad2014 год

From soil to plant, the journey of P through trophic relationships and ectomycorrhizal association
review

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Аннотация: Phosphorus (P) is essential for plant growth and productivity. It is one of the most limiting macronutrients in soil because it is mainly present as unavailable, bound P whereas plants can only use unbound, inorganic phosphate (iP), which is found in very low concentrations in soil solution. Some ectomycorrhizal fungi are able to release organic compounds (organic anions or phosphatases) to mobilize unavailable P. Recent studies suggest that bacteria play a major role in the mineralization of nutrients such as P through trophic relationships as they can produce specific phosphatases such as phytases to degrade phytate, the main form of soil organic P. Bacteria are also more effective than other microorganisms or plants at immobilizing free iP. Therefore, bacterial grazing by predators, such as nematodes, could release iP locked in bacterial biomass. Free iP may be taken up by ectomycorrhizal fungus by specific phosphate transporters and transferred to the plant by mechanisms that have not yet been identified. This mini-review aims to follow the phosphate pathway to understand the ecological and molecular mechanisms responsible for transfer of phosphate from the soil to the plant, to improve plant P nutrition.
Год издания: 2014
Авторы: Adeline Becquer, Jean Trap, Usman Irshad, Muhammad Arif Ali, Claude Plassard
Издательство: Frontiers Media
Источник: Frontiers in Plant Science
Ключевые слова: Plant nutrient uptake and metabolism, Phytase and its Applications, Legume Nitrogen Fixing Symbiosis
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