Abstract
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 °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 °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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Abbreviations
- FAD:
-
fatty acid desaturase
- F0 :
-
minimum fluorescence
- Fm :
-
maximum fluorescence
- Fv :
-
variable fluorescence (Fv = Fm − F0)
- Fv/Fm :
-
maximum photochemical efficiency of photosystem 2
- NPQ:
-
non-photochemical quenching
- qp:
-
photochemical quenching
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Sohn, S.O., Back, K. Transgenic rice tolerant to high temperature with elevated contents of dienoic fatty acids. Biol Plant 51, 340–342 (2007). https://doi.org/10.1007/s10535-007-0067-z
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DOI: https://doi.org/10.1007/s10535-007-0067-z