The miR172/IDS1 signaling module confers salt tolerance through maintaining ROS homeostasis in cereal crops

The miR172/IDS1 signaling module confers salt tolerance through maintaining ROS homeostasis in cereal crops

© 2021 The Authors New Phytologist © 2021 New Phytologist Foundation.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 230(2021), 3 vom: 30. Mai, Seite 1017-1033
1. Verfasser: Cheng, Xiliu (VerfasserIn)
Weitere Verfasser: He, Qiang, Tang, Sha, Wang, Haoran, Zhang, Xiangxiang, Lv, Mingjie, Liu, Huafeng, Gao, Qian, Zhou, Yue, Wang, Qi, Man, Xinyu, Liu, Jun, Huang, Rongfeng, Wang, Huan, Chen, Tao, Liu, Jie
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't IDS1 cereal crops miR172 reactive oxygen species (ROS) homeostasis salt tolerance Plant Proteins Reactive Oxygen Species
Beschreibung
Zusammenfassung:© 2021 The Authors New Phytologist © 2021 New Phytologist Foundation.
Salt stress triggers the overdose accumulation of reactive oxygen species (ROS) in crop plants, leading to severe oxidative damage to living tissues. MicroRNAs (miRNAs) act as master regulators orchestrating the stress responsive regulatory networks as well as salt tolerance. However, the fundamental roles of miRNAs in modulating salt tolerance in cereal crops, especially in salt-triggered ROS scavenging remain largely unknown. Through small RNA sequencing, a salt-responsive miRNA, miR172 was identified in rice. Further, by generating the miR172-overexpression or MIR172 gene loss-of-function mutant lines, the biological significance of miR172 and its downstream signaling pathways related to salt tolerance were defined. We demonstrated that miR172 is a positive regulator of salt tolerance in both rice and wheat. More interestingly, miR172a and miR172b, but not miR172c or miR172d are involved in salt stress response, emphasizing the functional differentiation within miR172 family members. Further evidence uncovers a novel miR172/IDS1 regulatory module that functions as a crucial molecular rheostat in maintaining ROS homeostasis during salt stress, mainly through balancing the expression of a group of ROS-scavenging genes. Our findings establish a direct molecular link between miRNAs and detoxification response in cereal crops for improving salt tolerance
Beschreibung:Date Completed 14.05.2021
Date Revised 14.05.2021
published: Print-Electronic
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.17211