Document Detail


Effect of different environmental stresses on the expression of oleate desaturase genes and fatty acid composition in olive fruit.
MedLine Citation:
PMID:  21194717     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The regulation of microsomal and plastidial oleate desaturases by low and high temperature, darkness, and wounding was investigated. To this end, their gene expression levels and the fatty acid composition was determined in the mesocarp tissue of olive fruit from the Picual and Arbequina varieties subjected to the corresponding stress treatments. Firstly, a plastidial oleate desaturase from olive was cloned and its functional identity was confirmed by overexpression in Escherichia coli. The results showed that temperature and light regulate olive oleate desaturase genes at transcriptional level. However, no correlation between their expression levels and the linoleic acid content in microsomal and plastidial lipids was found. In addition, the involvement of microsomal but not plastidial oleate desaturases in the wounding response of olive fruit mesocarp is demonstrated. The fatty acid analysis revealed the appearance of palmitolinoleic acid only in microsomal lipids, reaching a maximum 3h after wounding.
Authors:
M Luisa Hernández; María N Padilla; M Dolores Sicardo; Manuel Mancha; José M Martínez-Rivas
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Publication Detail:
Type:  Journal Article     Date:  2010-12-29
Journal Detail:
Title:  Phytochemistry     Volume:  72     ISSN:  1873-3700     ISO Abbreviation:  Phytochemistry     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-01-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0151434     Medline TA:  Phytochemistry     Country:  United States    
Other Details:
Languages:  eng     Pagination:  178-87     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Ltd. All rights reserved.
Affiliation:
Instituto de la Grasa (CSIC), Avda. Padre García Tejero, 4, 41012 Sevilla, Spain.
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