Skip to main content
padlock icon - secure page this page is secure

Free Content Osmotic regulation of root system architecture

Download Article:
 Download
(PDF 472.6 kb)
 
Summary

Although root system architecture is known to be highly plastic and strongly affected by environmental conditions, we have little understanding of the underlying mechanisms controlling root system development. Here we demonstrate that the formation of a lateral root from a lateral root primordium is repressed as water availability is reduced. This osmotic-responsive regulatory mechanism requires abscisic acid (ABA) and a newly identified gene, LRD2. Mutant analysis also revealed interactions of ABA and LRD2 with auxin signaling. Surprisingly, further examination revealed that both ABA and LRD2 control root system architecture even in the absence of osmotic stress. This suggests that the same molecules that mediate responses to environmental cues can also be regulators of intrinsic developmental programs in the root system.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Keywords: abscisic acid; auxin; lateral root; osmotic potential; root system architecture

Document Type: Research Article

Affiliations: Committee on Genetics, The University of Chicago, and

Publication date: July 1, 2005

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more