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Plant Biol (Stuttg). 2008 Sep;10 Suppl 1:23-36. doi: 10.1111/j.1438-8677.2008.00097.x.

Leaf nitrogen remobilisation for plant development and grain filling.

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1
Unité de Nutrition Azotée des Plantes, Institut National de la Recherche Agronomique, Route de Saint Cyr, Versailles, France. masclaux@versailles.inra.fr

Abstract

A major challenge of modern agriculture is to reduce the excessive input of fertilisers and, at the same time, to improve grain quality without affecting yield. One way to achieve this goal is to improve plant nitrogen economy through manipulating nitrogen recycling, and especially nitrogen remobilisation, from senescing plant organs. In this review, the contribution of nitrogen remobilisation efficiency (NRE) to global nitrogen use efficiency (NUE), and tools dedicated to the determination of NRE are described. An overall examination of the physiological, metabolic and genetic aspects of nitrogen remobilisation is presented.

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