Functional identification of ELO-like genes involved in very long chain fatty acid synthesis in Arabidopsis thaliana

Functional identification of ELO-like genes involved in very long chain fatty acid synthesis in... Very long chain fatty acids (VLCFAs) are essential lipid components in many plants. 3-Ketoacyl-CoA synthase (KCS) catalyzes the condensation reaction to form 3-ketoacyl-CoA in VLCFA synthesis. AtELO4 has been reported to be involved in VLCFA synthesis, functioning as a KCS in Arabidopsis. However, no studies on other three AtELO members have been reported. Here, we initially found by real-time PCR in Arabidopsis thaliana (L.) Heynh. that AtELO1, AtELO3, and AtELO4 displayed characteristic expression patterns, but AtELO2 was nearly expressed in any organ. Then the transient expression of ELO-like-eGFP fusions in Arabidopsis green leaf protoplasts showed that AtELO1, AtELO3, and AtELO4 were localized in the endoplasmic reticulum (ER), where VLCFA synthesis took place. Finally, we found that the contents of all fatty acids were decreased by 10–20% in seeds of atelo1 T-DNA insertion mutants. In seeds of Pro35S:AtELO1 plants, the levels of all remaining components, except C20:0 and C20:3, were significantly increased. Taken together, our study revealed biological functions of AtELO members and might lay the foundation for further genetic manipulations to generate oil crops with the high oil content. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Functional identification of ELO-like genes involved in very long chain fatty acid synthesis in Arabidopsis thaliana

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Publisher
Pleiades Publishing
Copyright
Copyright © 2014 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Physiology; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443714060193
Publisher site
See Article on Publisher Site

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