Journal
BIOLOGIA PLANTARUM
Volume 51, Issue 2, Pages 340-342Publisher
SPRINGER
DOI: 10.1007/s10535-007-0067-z
Keywords
chlorophyll content; fatty acid desaturase; heat stress; photochemical efficiency
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Funding
- National Research Foundation of Korea [R11-2001-092-05001-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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 degrees 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 degrees 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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