Document Detail


Fatty acid unsaturation, mobilization, and regulation in the response of plants to stress.
MedLine Citation:
PMID:  18227974     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Stress acclimating plants respond to abiotic and biotic stress by remodeling membrane fluidity and by releasing alpha-linolenic (18:3) from membrane lipids. The modification of membrane fluidity is mediated by changes in unsaturated fatty acid levels, a function provided in part by the regulated activity of fatty acid desaturases. Adjustment of membrane fluidity maintains an environment suitable for the function of critical integral proteins during stress. alpha-Linolenic acid, released from membrane lipid by regulated lipase activity, is the precursor molecule for phyto-oxylipin biosynthesis. The modulation of chloroplast oleic acid (18:1) levels is central to the normal expression of defense responses to pathogens in Arabidopsis. Oleic (18:1) and linolenic (18:2) acid levels, in part, regulate development, seed colonization, and mycotoxin production by Aspergillus spp.
Authors:
Robert G Upchurch
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Publication Detail:
Type:  Journal Article; Review     Date:  2008-01-29
Journal Detail:
Title:  Biotechnology letters     Volume:  30     ISSN:  0141-5492     ISO Abbreviation:  Biotechnol. Lett.     Publication Date:  2008 Jun 
Date Detail:
Created Date:  2008-04-22     Completed Date:  2008-07-01     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  8008051     Medline TA:  Biotechnol Lett     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  967-77     Citation Subset:  IM    
Affiliation:
Soybean & Nitrogen Fixation Unit, USDA-ARS, Raleigh, NC, USA. greg.upchurch@ars.usda.gov
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MeSH Terms
Descriptor/Qualifier:
Arabidopsis / metabolism,  microbiology
Aspergillus / physiology
Cold Temperature
Dehydration / metabolism
Fatty Acid Desaturases / metabolism*
Host-Pathogen Interactions
Hot Temperature
Membrane Fluidity*
Metals, Heavy / metabolism
Plant Diseases / microbiology
Plant Physiological Phenomena*
Salinity
alpha-Linolenic Acid / metabolism*
Chemical
Reg. No./Substance:
0/Metals, Heavy; 463-40-1/alpha-Linolenic Acid; EC 1.14.19.-/Fatty Acid Desaturases

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


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