Regulatory mechanisms used by ZmMYB39 to enhance drought tolerance in maize (Zea mays) seedlings
文献类型： 外文期刊
第一作者： Ren, Zhenzhen
作者： Ren, Zhenzhen;Su, Huihui;Ku, Lixia;Ren, Zhenzhen;Su, Huihui;Ku, Lixia;Zhang, Pengyu;Xie, Xiaowen;Shao, Jing;Tian, Zhiqiang;Wei, Li;Deng, Dezhi
作者机构：
关键词： Zea mays; Drought stress; MYB transcription factor
期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：6.5； 五年影响因子：6.4 ）
ISSN： 0981-9428
年卷期： 2024 年 211 卷
页码：
收录情况： SCI
摘要： Drought is a significant abiotic stressor that limits maize (Zea mays L.) growth and development. Thus, enhancing drought tolerance is critical for promoting maize production. Our findings demonstrated that ZmMYB39 is an MYB transcription factor with transcriptional activation activity. Drought stress experiments involving ZmMYB39 overexpression and knockout lines indicated that ZmMYB39 positively regulated drought stress tolerance in maize. DAP-Seq, EMSA, dual-LUC, and RT-qPCR provided initial insights into the molecular regulatory mechanisms by which ZmMYB39 enhances drought tolerance in maize. ZmMYB39 directly promoted the expression of ZmP5CS1, ZmPOX1, ZmSOD2, ZmRD22, ZmNAC49, and ZmDREB2A, which are involved in stress resistance. ZmMYB39 enhanced drought tolerance by interacting with and promoting the expression of ZmFNR1, ZmHSP20, and ZmDOF6. Our study offers a theoretical basis for understanding the molecular regulatory networks involved in maize drought stress response. Furthermore, ZmMYB39 serves as a valuable genetic resource for breeding drought-resistant maize.
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