Journal
RICE SCIENCE
Volume 19, Issue 4, Pages 263-268Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S1672-6308(12)60050-X
Keywords
rice; phytochrome-interacting factor; transgenic tobacco; light signal transduction
Categories
Funding
- Chinese National Natural Science Foundation [30971744]
- Chinese Ministry of Agriculture [2009ZX08001-029B]
- Shandong Natural Science Funds for Distinguished Young Scholar, China [JQ200911]
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The expression patterns of OsPIL11, one of six putative phytochrome-interacting factors, were analyzed in different organs of transgenic tobacco (Nicotiana tabacum). The expression of OsPIL11 was organ-specific and was regulated by leaf development, abscisic acid (ABA), jasmonic acid (JA) and salicylic acid (SA). To further explore the role of OsPIL11 in plant light signal transduction, a plant expression vector of OsPIL11 was constructed and introduced into tobacco. When grown under continuous red light, OsPIL11-overexpressed transgenic tobacco exhibited shorter hypocotyls and larger cotyledons and leaves compared to wild-type seedlings. When grown under continuous far-red light, however, transgenic and wild-type seedlings showed similar phenotypes. These results indicate that OsPIL11 is involved in red light induced de-etiolation, but not in far-red light induced de-etiolation in transgenic tobacco, which lays the foundation for dissecting the function of OsPIL11 in phytochrome-mediated light signal transduction in rice.
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