PKL is stabilized by MMS21 to negatively regulate Arabidopsis drought tolerance through directly repressing AFL1 transcription

© 2023 The Authors. New Phytologist © 2023 New Phytologist Foundation.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 239(2023), 3 vom: 20. Aug., Seite 920-935
1. Verfasser: Jing, Yexing (VerfasserIn)
Weitere Verfasser: Yang, Ziyi, Yang, Ruizhen, Zhang, Yunwei, Qiao, Weihua, Zhou, Yun, Sun, Jiaqiang
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't AFL1 Arabidopsis MMS21 PKL drought tolerance protein stability Arabidopsis Proteins Transcription Factors
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520 |a Drought stress causes substantial losses in crop production per year worldwide, threatening global food security. Identification of the genetic components underlying drought tolerance in plants is of great importance. In this study, we report that loss-of-function of the chromatin-remodeling factor PICKLE (PKL), which is involved in repression of transcription, enhances drought tolerance of Arabidopsis. At first, we find that PKL interacts with ABI5 to regulate seed germination, but PKL regulates drought tolerance independently of ABI5. Then, we find that PKL is necessary for repressing the drought-tolerant gene AFL1, which is responsible for the drought-tolerant phenotype of pkl mutant. Genetic complementation tests demonstrate that the Chromo domain and ATPase domain but not the PHD domain are required for the function of PKL in regulating drought tolerance. Interestingly, we find that the DNA-binding domain (DBD) is essential for the protein stability of PKL. Furthermore, we demonstrate that the SUMO E3 ligase MMS21 interacts with and enhances the protein stability of PKL. Genetic interaction analysis shows that MMS21 and PKL additively regulate plant drought tolerance. Collectively, our findings uncover a MMS21-PKL-AFL1 module in regulating plant drought tolerance and offer insights into a novel strategy to improve crop drought tolerance 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a AFL1 
650 4 |a Arabidopsis 
650 4 |a MMS21 
650 4 |a PKL 
650 4 |a drought tolerance 
650 4 |a protein stability 
650 7 |a Arabidopsis Proteins  |2 NLM 
650 7 |a Transcription Factors  |2 NLM 
700 1 |a Yang, Ziyi  |e verfasserin  |4 aut 
700 1 |a Yang, Ruizhen  |e verfasserin  |4 aut 
700 1 |a Zhang, Yunwei  |e verfasserin  |4 aut 
700 1 |a Qiao, Weihua  |e verfasserin  |4 aut 
700 1 |a Zhou, Yun  |e verfasserin  |4 aut 
700 1 |a Sun, Jiaqiang  |e verfasserin  |4 aut 
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