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Commensal lifestyle regulated by a negative feedback loop between Arabidopsis ROS and the bacterial T2SS

文献类型： 外文期刊

作者： Entila, Frederickson 1 ; Han, Xiaowei 1 ; Mine, Akira 5 ; Schulze-Lefert, Paul 2 ; Tsuda, Kenichi 1 ;

作者机构： 1.Huazhong Agr Univ, Coll Plant Sci & Technol, Natl Key Lab Agr Microbiol, Hubei Key Lab Plant Pathol,Hubei Hongshan Lab, Wuhan 430070, Peoples R China

2.Max Planck Inst Plant Breeding Res, Dept Plant Microbe Interact, Carl von Linne Weg 10, D-50829 Cologne, Germany

3.Huazhong Agr Univ, Shenzhen Inst Nutr & Hlth, Wuhan 430070, Peoples R China

4.Chinese Acad Agr Sci, Shenzhen Branch, Guangdong Lab Lingnan Modern Agr, Genome Anal Lab,Minist Agr & Rural Affairs,Agr Gen, Shenzhen 518120, Guangdong, Peoples R China

5.JST PRESTO, Kawaguchi, Saitama 3320012, Japan

6.Kyoto Univ, Grad Sch Agr, Lab Plant Pathol, Kyoto 6068502, Japan

期刊名称：NATURE COMMUNICATIONS （ 影响因子：16.6； 五年影响因子：17.0 ）

ISSN：

年卷期： 2024 年 15 卷 1 期

页码：

收录情况： SCI

摘要： Despite the plant health-promoting effects of plant microbiota, these assemblages also comprise potentially detrimental microbes. How plant immunity controls its microbiota to promote plant health under these conditions remains largely unknown. We find that commensal bacteria isolated from healthy Arabidopsis plants trigger diverse patterns of reactive oxygen species (ROS) production dependent on the immune receptors and completely on the NADPH oxidase RBOHD that selectively inhibited specific commensals, notably Xanthomonas L148. Through random mutagenesis, we find that L148 gspE, encoding a type II secretion system (T2SS) component, is required for the damaging effects of Xanthomonas L148 on rbohD mutant plants. In planta bacterial transcriptomics reveals that RBOHD suppresses most T2SS gene expression including gspE. L148 colonization protected plants against a bacterial pathogen, when gspE was inhibited by ROS or mutation. Thus, a negative feedback loop between Arabidopsis ROS and the bacterial T2SS tames a potentially detrimental leaf commensal and turns it into a microbe beneficial to the host.

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