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Current Opinion in Plant Biology
Vol. 12, No: 6, 2009, Pages: 766 - 72

The exploring root--root growth responses to local environmental conditions

Monshausen GB, Gilroy S

Department of Botany, University of Wisconsin, Birge Hall, 430 Lincoln Drive, Madison, WI 53706, United States.


Because of their sessile lifestyle, the areas which plants can access to forage for resources are confined to those which can be explored by growth. High sensitivity to environmental conditions coupled to the appropriate readjustment of growth and developmental responses are thus critical to plant survival. In this review, we focus on how roots perceive physical cues such as soil water status and mechanical properties and translate them into physiological signals to redirect organ growth and modulate root system architecture. Because the precise molecular identity of most of the sensors used by the root to sample the soil environment remain to be determined, the mechanisms underlying similar processes in microbes are providing important models for how these receptor systems may be functioning in plants.

Keywords:plants can access to forage,soil environment,receptor systems may be functioning in plants.



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