Transgenic rice tolerant to high temperature with elevated contents of dienoic fatty acids
Sohn, S.O.,Chonnam National Univ., Gwangju (South Korea). Dept. of Molecular Biotechnology | Back, K.,Chonnam National Univ., Gwangju (South Korea). Dept. of Molecular Biotechnology
Transgenic rice plants in which the content of dienoic fatty acids was increased as a result of co-suppression of fatty acid desaturase were more tolerant to high temperatures than untransformed wild-type plants, as judged by growth rate and chlorophyll content. When untransformed wild-type and transgenic rice seedlings were incubated at 35 deg C, seedlings of the transgenic rice lines showed approximately 1.6 and 2.1 times the growth of untransformed wild-type seedlings, as assayed by shoot and root mass, respectively. The chlorophyll content of the transgenic leaves after 9 d at 35 deg C was also higher than that of wild-type rice. The maximum photochemical efficiency of photosystem 2 was also higher in transgenic plants than in wild-type plants upon high temperature stress.
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