Regulation of flowering time in chrysanthemum by the R2R3 MYB transcription factor

Autor: Lu, Zhu, Yunxiao, Guan, Yanan, Liu, Zhaohe, Zhang, Muhammad Abuzar, Jaffar, Aiping, Song, Sumei, Chen, Jiafu, Jiang, Fadi, Chen
Rok vydání: 2019
Předmět:
Zdroj: Horticulture Research
ISSN: 2662-6810
Popis: 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.
Databáze: OpenAIRE