转录因子
热冲击系数
细胞生物学
热休克蛋白
适应性
基因
抄写(语言学)
热冲击
生物
化学
遗传学
热休克蛋白70
生态学
语言学
哲学
作者
Jilin Ma,Yingying Wang,Yueyun Hong,Mingjie Zhao,Xuechun Ma,Jiapeng Liu,Weiwen Chai,Wenchao Zhao,Lulu Sun,Jing Wang,Shaohui Wang,Huang Huang
摘要
High temperature (HT) severely restricts plant growth, development, and productivity. Plants have evolved a set of mechanisms to cope with HT, including the regulation of heat stress transcription factors (Hsfs) and heat shock proteins (Hsps). However, it is not clear how the transcriptional and translational levels of Hsfs and Hsps are controlled in tomato. Here, we reported that the HT-induced transcription factor SlWRKY55 recruited SlVQ11 to coordinately regulate defense against HT. SlWRKY55 directly bound to the promoter of SlHsfA2 and promoted its expression, which was increased by SlVQ11. Moreover, both SlWRKY55 and SlVQ11 physically interacted with SlHsfA2 to enhance the transcriptional activity of SlHsfA2. Thus, our results revealed a molecular mechanism that the SlWRKY55/SlVQ11-SlHsfA2 cascade enhanced thermotolerance and provided potential target genes for improving the adaptability of crops to HT.
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