ORIGINAL RESEARCH article
Front. Plant Sci.
Sec. Plant Pathogen Interactions
Volume 16 - 2025 | doi: 10.3389/fpls.2025.1595529
This article is part of the Research TopicInvestigating the Elements of Plant Defense Mechanisms Within Plant Immune Responses Against Pathogens, Volume IIView all 5 articles
Flagellin FLiS improves the resistance of cotton to Verticillium wilt through the signaling pathways of salicylic acid (SA) and jasmonic acid (JA)
Provisionally accepted
- 1Fuzhou University, Fuzhou, China
- 2School of Advanced Manufacturing, Fuzhou University, Quanzhou, Fujian Province, China
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Verticillium wilt of cotton is a soil-borne vascular bundle disease. There is still a lack of effective methods for controlling and preventing Verticillium wilt of cotton. There are few reports on the research of the mechanism by which flagellin S (FLiS) protein induces cotton immunity. The purpose of this study was to determine the role and mechanism of FLiS in improving the resistance of cotton to Verticillium wilt. An endophytic bacterium (Pseudomonas) was isolated from the roots of upland cotton cultivar Zhongmian 44, and the FLiS gene was cloned. The FLiS protein purified in vitro can induce a hypersensitive response (HR) in tobacco, indicating that it is an active protein. In addition, it is capable of triggering an immune response in upland cotton, thereby enhancing the resistance to Verticillium wilt. The FLiS protein can induce the production of hydrogen peroxide(H2O2), callose, and defense enzymes in cotton, as well as the expression of disease resistance genes in the signaling pathways of salicylic acid (SA) and jasmonic acid (JA). FLiS can be used as a biological regulator to improve the resistance of upland cotton to V. dahliae.
Keywords: Flagellin S, Upland cotton, immune response, Verticillium wilt AOS, Allene oxide synthase, cat, Catalase, CHI
Received: 18 Mar 2025; Accepted: 19 May 2025.
Copyright: © 2025 Liu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Yujing Liu, Fuzhou University, Fuzhou, China
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