Ectopic Expression of Fagopyrum tataricum FtMYB12 Improves Cold Tolerance in Arabidopsis thaliana

文献类型： 外文期刊

第一作者： Zhou, Meiliang

作者： Zhou, Meiliang;Wang, Chenglong;Sun, Zhanmin;Wu, Yanmin;Zhou, Meiliang;Wang, Chenglong;Qi, Leipeng;Yang, Xiongbang;Shao, Jirong

作者机构：

关键词： Buckwheat;Cold stress;COR15a;Malondialdehyde;R2R3-type transcription factor

期刊名称：JOURNAL OF PLANT GROWTH REGULATION （ 影响因子：4.169； 五年影响因子：4.038 ）

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收录情况： SCI

摘要： MYB transcription factors play important roles in the abiotic stress response in plants, but their characteristics and functions in buckwheat (Fagopyrum tataricum) have not been fully investigated. Here, a novel R2R3-type MYB gene, designated FtMYB12, was isolated from the cultivated tartary buckwheat F. tataricum. Using quantitative real-time PCR, we found that the FtMYB12 was greatly induced by low temperature. Sub-localization and yeast transactivity assay demonstrated that the FtMYB12 gene encodes a nuclear transcription activator. Overexpression of FtMYB12 in transgenic Arabidopsis plants resulted in enhanced cold tolerance. The FtMYB12 overexpressing Arabidopsis lines showed higher root length and had elevated levels of proline content and lower levels of malondialdehyde under cold stress conditions compared to the wild-type plants. The results revealed that FtMYB12 may play an essential role in regulation of cold stress-responsive signaling in F. tataricum.

分类号： Q94

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