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Curr Opin Plant Biol. 2008 Feb;11(1):82-7. Epub 2007 Nov 19.

Root branching responses to phosphate and nitrate.

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  • Laboratoire de Biologie du Développement des Plantes, Service de biologie végétale et de microbiologie environnementale, Commissariat à l'Energie Atomique CEA cadarache, Saint Paul lez Durance F-13108, France. thiery.desnos@cea.fr


Plant roots favour colonization of nutrient-rich zones in soil. Molecular genetic evidences demonstrate that roots sense and respond to local and global concentrations of inorganic phosphate and nitrate, in a fashion that depends on the shoot nutrient status. Recent investigations in Arabidopsis highlighted the role of the root tip in phosphate sensing and attributed to already known proteins (multicopper oxidases and nitrate transporters) new and unexpected functions in the root growth response to phosphate or nitrate.

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