AUTHOR=Xu Shanshan , Ren Shaofeng , Bao Wenjing , Li Xiaoguang , Zhang Yumei , Yu Buzhu , Li Weiqi , Li Chengyun , Dong Wenhan , Yang Genhua 

TITLE=Identification of the toxin components of Rhizoctonia solani AG1-IA and its destructive effect on plant cell membrane structure

JOURNAL=Frontiers in Plant Science

VOLUME=15

YEAR=2024

URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2024.1348257

DOI=10.3389/fpls.2024.1348257

ISSN=1664-462X

ABSTRACT=<p>Rice sheath blight is a fungal disease caused mainly by <italic>Rhizoctonia solani</italic> AG1-IA. Toxins are a major pathogenic factor of <italic>R. solani</italic>, and some studies have reported their toxin components; however, there is no unified conclusion. In this study, we reported the toxin components and their targets that play a role in <italic>R. solani</italic> AG1-IA. First, toxins produced by <italic>R. solani</italic> AG1-IA were examined. Several important phytotoxins, including benzoic acid (BZA), 5-hydroxymethyl-2-furanic aid (HFA), and catechol (CAT), were identified by comparative analysis of secondary metabolites from AG1-IA, AG1-IB, and healthy rice. Follow-up studies have shown that the toxin components of this fungus can rapidly disintegrate the biofilm structure while maintaining the content of host plant membrane components, thereby affecting the organelles, which may also explain the lack of varieties highly resistant to sheath blight.</p>