Q negatively regulates wheat salt tolerance through directly repressing the expression of TaSOS1 and reactive oxygen species scavenging genes
文献类型： 外文期刊
作者： Yang, Ziyi 1 ; Yang, Ruizhen 1 ; Bai, Wanqing 1 ; Chen, Wenxi 1 ; Kong, Xiuying 1 ; Zhou, Yun 2 ; Qiao, Weihua 1 ; Zhang, Yunwei 1 ; Sun, Jiaqiang 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Crop Sci, State Key Lab Crop Gene Resources & Breeding, Beijing 100081, Peoples R China
2.Henan Univ, Sch Life Sci, State Key Lab Crop Stress Adaptat & Improvement, Kaifeng 475001, Henan, Peoples R China
关键词： wheat; salt tolerance; reactive oxygen species; Q; TaWD40
期刊名称：PLANT JOURNAL （ 影响因子：7.2； 五年影响因子：7.9 ）
ISSN： 0960-7412
年卷期： 2024 年
页码：
收录情况： SCI
摘要： The Q transcription factor plays important roles in improving multiple wheat domestication traits such as spike architecture, threshability and rachis fragility. However, whether and how it regulates abiotic stress adaptation remain unclear. We found that the transcriptional expression of Q can be induced by NaCl and abscisic acid treatments. Using the q mutants generated by CRISPR/Cas9 and Q overexpression transgenic lines, we showed that the domesticated Q gene causes a penalty in wheat salt tolerance. Then, we demonstrated that Q directly represses the transcription of TaSOS1-3B and reactive oxygen species (ROS) scavenging genes to regulate Na+ and ROS homeostasis in wheat. Furthermore, we showed that wheat salt tolerance protein TaWD40 interacts with Q to competitively interfere with the interaction between Q and the transcriptional co-repressor TaTPL. Taken together, our findings reveal that Q directly represses the expression of TaSOS1 and some ROS scavenging genes, thus causing a harmful effect on wheat salt tolerance.
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