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Seed phosphorus remobilization is not a major limiting step for phosphorus nutrition during early growth of maize

Abstract : Phosphorus (P) is the least mobile nutrient in the soil as compared to other macronutrients and therefore frequently limits crop growth. During germination and early growth, seed-phytate hydrolysis and seed-P remobilization is the major P source for developing seedlings. The objective of this paper was to investigate whether seed-P hydrolysis and remobilization of nonphytate P are sufficient for seedling P nutrition during early growth stages of maize. A large part of initial maize endogenous seed P reserves are mainly in the form of phytate. Till 70 cumulated degree days after sowing, nearly all the phytate (98%) was hydrolyzed and caused an increase in nonphytate P in seeds. Phytate hydrolysis and remobilization of nonphytate P was the main source of P supply for the newly growing seedlings and was not a limiting step for seedling P nutrition during the first four weeks of early growth.
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https://hal.inrae.fr/hal-02652340
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Submitted on : Friday, May 29, 2020 - 6:58:30 PM
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Muhammad Nadeem, Alain Mollier, Christian Morel, Alain Vives, Loïc Prud'Homme, et al.. Seed phosphorus remobilization is not a major limiting step for phosphorus nutrition during early growth of maize. Journal of Plant Nutrition and Soil Science, Wiley-VCH Verlag, 2012, 175 (6), pp.805-809. ⟨10.1002/jpln.201200369⟩. ⟨hal-02652340⟩

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