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Phosphate availability regulates root system architecture in Arabidopsis

Williamson, L C, Ribrioux, S P C P, Fitter, A H and Leyser, H M O (2001) Phosphate availability regulates root system architecture in Arabidopsis. Plant Physiology. pp. 875-882. ISSN 0032-0889

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Abstract

Plant root systems are highly plastic in their development and can adapt their architecture in response to the prevailing environmental conditions. One important parameter is the availability of phosphate, which is highly immobile in soil such that the arrangement of roots within the soil will profoundly affect the ability of the plant to acquire this essential nutrient. Consistent with this, the availability of phosphate was found to have a marked effect on the root system architecture of Arabidopsis. Low phosphate availability favored lateral root growth over primary root growth, through increased lateral root density and length, and reduced primary root growth mediated by reduced cell elongation. The ability of the root system to respond to phosphate availability was found to be independent of sucrose supply and auxin signaling. In contrast, shoot phosphate status was found to influence the root system architecture response to phosphate availability.

Item Type: Article
Copyright, Publisher and Additional Information: © 2001 American Society of Plant Physiologists
Keywords: PLANTS BOTHER, THALIANA, GROWTH, NITRATE, PROLIFERATION, MUTANTS, CAPTURE, SHOOT, AUXIN, GENE
Institution: The University of York
Academic Units: The University of York > Biology (York)
Depositing User: Repository Officer
Date Deposited: 12 Nov 2004
Last Modified: 16 Oct 2014 18:09
Status: Published
Refereed: Yes
URI: http://eprints.whiterose.ac.uk/id/eprint/185

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