MdFLP enhances drought tolerance by regulating MdNAC019 in self-rooted apple stocks

文献类型: 外文期刊

第一作者: Wang, Zenghui

作者: Wang, Zenghui;Yang, Xuemei;Yin, Yanlei;Hu, Yanli;Shen, Xiang;Hu, Yanli;Shen, Xiang;Hu, Yanli;Shen, Xiang;Li, Jialin

作者机构:

关键词: Self-rooted apple stocks; MdFLP; Drought stress; Transcriptional regulation; MdNAC019

期刊名称:PLANT SCIENCE ( 影响因子:5.363; 五年影响因子:5.454 )

ISSN: 0168-9452

年卷期: 2022 年 321 卷

页码:

收录情况: SCI

摘要: Self-rooted apple stocks are widely used for the production of apples worldwide. However, self-rooted apple stocks are weak due to shallow roots and poor grounding, resulting in poor drought resistance. Therefore, it is essential to understand the molecular mechanisms to develop self-rooted apple stock cultivars with drought resistance. We reported that MdFLP, an R2R3-MYB transcription factor, directly binds to the promoter of MdNAC019, activating its transcription and consequently enhancing drought tolerance in self-rooted apple stocks. In addition, MdFLP indirectly activates the transcriptional expression of abiotic stress-related genes, namely, MdERF6 and MoT10. The plants overexpressing MdFLP displayed stronger drought tolerance, whereas MdFLP-RNAi plants showed weak drought tolerance compared with non-transgenic "Gala" plants, indicating that MdFLP regulates drought tolerance in self-rooted apple stocks. Altogether, we believe that our findings provide novel insights into the functions of MdFLP in the regulation of drought tolerance in self-rooted apple stocks.

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