MaDREB1F confers cold and drought stress resistance through common regulation of hormone synthesis and protectant metabolite contents in banana
文献类型: 外文期刊
第一作者: Xu, Yi
作者: Xu, Yi;Hu, Wei;Song, Shun;Ye, Xiaoxue;Ding, Zehong;Liu, Juhua;Wang, Zhuo;Li, Jingyang;Xu, Biyu;Jin, Zhiqiang;Xu, Yi;Hu, Wei;Ye, Xiaoxue;Ding, Zehong;Liu, Juhua;Wang, Zhuo;Xu, Biyu;Jin, Zhiqiang;Xu, Yi;Hu, Wei;Song, Shun;Ye, Xiaoxue;Ding, Zehong;Liu, Juhua;Wang, Zhuo;Xu, Biyu;Jin, Zhiqiang;Hu, Wei;Ye, Xiaoxue;Ding, Zehong;Liu, Juhua;Wang, Zhuo;Xu, Biyu;Jin, Zhiqiang;Hou, Xiaowan
作者机构:
期刊名称:HORTICULTURE RESEARCH ( 影响因子:8.7; 五年影响因子:9.0 )
ISSN: 2662-6810
年卷期: 2023 年 10 卷 2 期
页码:
收录情况: SCI
摘要: Adverse environmental factors severely affect crop productivity. Improving crop resistance to multiple stressors is an important breeding goal. Although CBFs/DREB1s extensively participate in plant resistance to abiotic stress, the common mechanism underlying CBFs/DREB1s that mediate resistance to multiple stressors remains unclear. Here, we show the common mechanism for MaDREB1F conferring cold and drought stress resistance in banana. MaDREB1F encodes a dehydration-responsive element binding protein (DREB) transcription factor with nuclear localization and transcriptional activity. MaDREB1F expression is significantly induced after cold, osmotic, and salt treatments. MaDREB1F overexpression increases banana resistance to cold and drought stress by common modulation of the protectant metabolite levels of soluble sugar and proline, activating the antioxidant system, and promoting jasmonate and ethylene syntheses. Transcriptomic analysis shows that MaDREB1F activates or alleviates the repression of jasmonate and ethylene biosynthetic genes under cold and drought conditions. Moreover, MaDREB1F directly activates the promoter activities of MaAOC4 and MaACO20 for jasmonate and ethylene syntheses, respectively, under cold and drought conditions. MaDREB1F also targets the MaERF11 promoter to activate MaACO20 expression for ethylene synthesis under drought stress. Together, our findings offer new insight into the common mechanism underlying CBF/DREB1-mediated cold and drought stress resistance, which has substantial implications for engineering cold- and drought-tolerant crops.
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