期刊
HORTICULTURE RESEARCH
卷 7, 期 1, 页码 -出版社
NANJING AGRICULTURAL UNIV
DOI: 10.1038/s41438-020-0317-1
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资金
- National Natural Science Foundation of China [31572159]
- Jiangsu Modern Agricultural Industry Technology System Construction Project [JATS[2018]278]
- Fundamental Research Funds for Central Universities [KJQN201815, KYZ201832]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Jiangsu Planned Projects for Postdoctoral Research Funds
The switch from vegetative growth to reproductive growth is a key event in the development of a plant. Here, the product of the chrysanthemum gene CmMYB2, an R2R3 MYB transcription factor that is localized in the nucleus, was shown to be a component of the switching mechanism. Plants engineered to overexpress CmMYB2 flowered earlier than did wild-type plants, while those in which CmMYB2 was suppressed flowered later. In both the overexpression and RNAi knockdown plants, a number of genes encoding proteins involved in gibberellin synthesis or signaling, as well as in the response to photoperiod, were transcribed at a level that differed from that in the wild type. Both yeast two-hybrid and bimolecular fluorescence complementation assays revealed that CmMYB2 interacts with CmBBX24, a zinc-finger transcription factor known to regulate flowering by its influence on gibberellin synthesis.
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