Document Detail

Ethylene directs auxin to control root cell expansion.
MedLine Citation:
PMID:  21105933     Owner:  NLM     Status:  MEDLINE    
Root morphogenesis is controlled by the regulation of cell division and expansion. We isolated an allele of the eto1 ethylene overproducer as a suppressor of the auxin-resistant mutant ibr5, prompting an examination of crosstalk between the phytohormones auxin and ethylene in control of root epidermal cell elongation and root hair elongation. We examined the interaction of eto1 with mutants that have reduced auxin response or transport and found that ethylene overproduction partially restored auxin responsiveness to these mutants. In addition, we found that the effects of endogenous ethylene on root cell expansion in eto1 seedlings were partially impeded by dampening auxin signaling, and were fully suppressed by blocking auxin influx. These data provide insight into the interaction between these two key plant hormones, and suggest that endogenous ethylene directs auxin to control root cell expansion.
Lucia C Strader; Grace L Chen; Bonnie Bartel
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2010-11-04
Journal Detail:
Title:  The Plant journal : for cell and molecular biology     Volume:  64     ISSN:  1365-313X     ISO Abbreviation:  Plant J.     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2010-11-25     Completed Date:  2011-03-29     Revised Date:  2014-04-08    
Medline Journal Info:
Nlm Unique ID:  9207397     Medline TA:  Plant J     Country:  England    
Other Details:
Languages:  eng     Pagination:  874-84     Citation Subset:  IM    
Copyright Information:
© 2010 The Authors. The Plant Journal © 2010 Blackwell Publishing Ltd.
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MeSH Terms
Arabidopsis / cytology*,  genetics,  metabolism
Arabidopsis Proteins / genetics,  metabolism*
Ethylenes / pharmacology*
Gene Expression Regulation, Plant
Indoleacetic Acids / metabolism*
Plant Growth Regulators / metabolism
Plant Roots / cytology,  growth & development*
Grant Support
Reg. No./Substance:
0/Arabidopsis Proteins; 0/ETO1 protein, Arabidopsis; 0/Ethylenes; 0/Indoleacetic Acids; 0/Plant Growth Regulators; 91GW059KN7/ethylene

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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