PT  - JOURNAL ARTICLE
AU  - Tran, Tuan Minh
AU  - Ma, Zhiming
AU  - Triebl, Alexander
AU  - Nath, Sangeeta
AU  - Cheng, Yingying
AU  - Gong, Ben-Qiang
AU  - Han, Xiao
AU  - Wang, Junqi
AU  - Li, Jian-Feng
AU  - Wenk, Markus R
AU  - Torta, Federico
AU  - Mayor, Satyajit
AU  - Yang, Liang
AU  - Miao, Yansong
TI  - The bacterial quorum sensing signal DSF hijacks <em>Arabidopsis thaliana</em> sterol biosynthesis to suppress plant innate immunity
AID  - 10.26508/lsa.202000720
DP  - 2020 Oct 01
TA  - Life Science Alliance
PG  - e202000720
VI  - 3
IP  - 10
4099  - http://www.life-science-alliance.org/content/3/10/e202000720.short
4100  - http://www.life-science-alliance.org/content/3/10/e202000720.full
SO  - Life Sci. Alliance2020 Oct 01; 3
AB  - Quorum sensing (QS) is a recognized phenomenon that is crucial for regulating population-related behaviors in bacteria. However, the direct specific effect of QS molecules on host biology is largely understudied. In this work, we show that the QS molecule DSF (cis-11-methyl-dodecenoic acid) produced by Xanthomonas campestris pv. campestris can suppress pathogen-associated molecular pattern–triggered immunity (PTI) in Arabidopsis thaliana, mediated by flagellin-induced activation of flagellin receptor FLS2. The DSF-mediated attenuation of innate immunity results from the alteration of FLS2 nanoclusters and endocytic internalization of plasma membrane FLS2. DSF altered the lipid profile of Arabidopsis, with a particular increase in the phytosterol species, which impairs the general endocytosis pathway mediated by clathrin and FLS2 nano-clustering on the plasma membrane. The DSF effect on receptor dynamics and host immune responses could be entirely reversed by sterol removal. Together, our results highlighted the importance of sterol homeostasis to plasma membrane organization and demonstrate a novel mechanism by which pathogenic bacteria use their communicating molecule to manipulate pathogen-associated molecular pattern–triggered host immunity.