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Science 21 January 2000:
Vol. 287. no. 5452, pp. 476 - 479
DOI: 10.1126/science.287.5452.476
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Reports

Trienoic Fatty Acids and Plant Tolerance of High Temperature

Yuuki Murakami, 1 Michito Tsuyama, 2 Yoshichika Kobayashi, 2 Hiroaki Kodama, 1* Koh Iba 1dagger

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.

1 Department of Biology and
2 Department of Forestry, Kyushu University, Fukuoka 812-8581, Japan.
*   Present address: Department of Bioresources Chemistry, Faculty of Horticulture, Chiba University, Matsudo 648, Chiba 271-8510, Japan.

dagger    To whom correspondence should be addressed. E-mail: koibascb{at}mbox.nc.kyushu-u.ac.jp

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Science. ISSN 0036-8075 (print), 1095-9203 (online)