A small peptide miPEP172b encoded by primary transcript of miR172b regulates salt tolerance in rice

Bibliographische Detailangaben
Veröffentlicht in:	Plant physiology and biochemistry : PPB. - 1991. - 219(2024) vom: 24. Dez., Seite 109442
1. Verfasser:	Lu, Long (VerfasserIn)
Weitere Verfasser:	Wang, Yuan, Huang, Zecong, Qiu, Shunjiao, Lin, Jie, Feng, Yiran, Zhang, Yuke, Chen, Xinyu, Xie, Siwen, Ma, Yinuo, Song, Yuanyuan, Zeng, Rensen
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2024
Zugriff auf das übergeordnete Werk:	Plant physiology and biochemistry : PPB
Schlagworte:	Journal Article ROS Rice Salt stress miR172 miRNA-encoded peptide

Beschreibung
Zusammenfassung:	Copyright © 2024 Elsevier Masson SAS. All rights reserved. Recent studies have demonstrated that the primary transcript of miRNAs (pri-miRNAs) are able to encode small peptides influencing plant growth and development, as well as responses to various environmental cues. However, their role in plant responses to salt stress is not fully comprehended. Here, we characterized a short peptide encoded by miR172b (miPEP172b) in rice (Oryza sativa L.). By applying synthetic miPEP172b, we observed a significant increase in miR172b abundance and a decrease in the expression of its target gene IDS1. Consequently, plants treated with miPEP172b exhibited enhanced tolerance to salinity stress. Furthermore, we found that miPEP172b was efficiently absorbed by roots and transported to the aerial parts of the plant, thus conferring salt tolerance in the aboveground organs. Overexpression of miPEP172b resulted in reduced levels of reactive oxygen species (ROS), leading to improved performance of rice seedlings under salinity conditions. This was consistent with the observations in miR172-overexpressing plants. Conversely, miPEP172b mutants showed increased sensitivity to salt stress. Further analysis revealed that miPEP172b-miR172-IDS1 improved rice salt tolerance by integrating the ROS scavenging pathway and plant hormone signaling. Our findings highlight the significant role of miPEP172b in regulating miR172 activity and salt tolerance, providing a useful agent for improving crop salt tolerance
Beschreibung:	Date Revised 25.12.2024 published: Print-Electronic Citation Status Publisher
ISSN:	1873-2690
DOI:	10.1016/j.plaphy.2024.109442