Gravity signal transduction in primary roots.

ABSTRACT:

Aims

The molecular mechanisms that correlate with gravity perception and signal transduction in the tip of angiosperm primary roots are discussed.

Scope

Gravity provides a cue for downward orientation of plant roots, allowing anchorage of the plant and uptake of the water and nutrients needed for growth and development. Root gravitropism involves a succession of physiological steps: gravity perception and signal transduction (mainly mediated by the columella cells of the root cap); signal transmission to the elongation zone; and curvature response. Interesting new insights into gravity perception and signal transduction within the root tip have accumulated recently by use of a wide range of experimental approaches in physiology, biochemistry, genetics, genomics, proteomics a

SUBMITTER: Perrin RM 

PROVIDER: S-EPMC4247041 | biostudies-literature | 2005 Oct

REPOSITORIES: biostudies-literature