Trienoic Fatty Acids and Plant Tolerance of High Temperature

Science  21 Jan 2000:
Vol. 287, Issue 5452, pp. 476-479
DOI: 10.1126/science.287.5452.476

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The chloroplast membrane of higher plants contains an unusually high concentration of trienoic fatty acids. Plants grown in colder temperatures have a higher content of trienoic fatty acids. Transgenic tobacco plants in which the gene encoding chloroplast omega-3 fatty acid desaturase, which synthesizes trienoic fatty acids, was silenced contained a lower level of trienoic fatty acids than wild-type plants and were better able to acclimate to higher temperatures.

  • * Present address: Department of Bioresources Chemistry, Faculty of Horticulture, Chiba University, Matsudo 648, Chiba 271-8510, Japan.

  • To whom correspondence should be addressed. E-mail: koibascb{at}

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