| Title: | ER Bodies Are Induced by Pseudomonas syringae and Negatively Regulate Immunity |
| Author(s): | Rufian JS; Elmore JM; Bejarano ER; Beuzon CR; Coaker GL; |
| Address: | "Instituto de Hortofruticultura Subtropical y Mediterranea, Universidad de Malaga-Consejo Superior de Investigaciones Cientificas (IHSM-UMA-CSIC), Dept. Biologia Celular, Genetica y Fisiologia, Campus de Teatinos, Malaga E-29071, Spain. Department of Plant Pathology, University of California Davis, Davis, CA 95616, U.S.A. Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences; Chinese Academy of Sciences, Shanghai 201602, China" |
| Journal Title: | Mol Plant Microbe Interact |
| DOI: | 10.1094/MPMI-11-20-0330-SC |
| ISSN/ISBN: | 0894-0282 (Print) 0894-0282 (Linking) |
| Abstract: | "ER bodies are endoplasmic reticulum-derived organelles present in plants belonging to the Brassicales order. In Arabidopsis thaliana, ER bodies are ubiquitous in cotyledons and roots and are present only in certain cell types in rosette leaves. However, both wounding and jasmonic acid treatment induce the formation of ER bodies in leaves. Formation of this structure is dependent on the transcription factor NAI1. The main components of the ER bodies are beta-glucosidases (BGLUs), enzymes that hydrolyze specialized compounds. In Arabidopsis, PYK10 (BGLU23) and BGLU18 are the most abundant ER body proteins. In this work, we found that ER bodies are downregulated as a consequence of the immune responses induced by bacterial flagellin perception. Arabidopsis mutants defective in ER body formation show enhanced responses upon flagellin perception and enhanced resistance to bacterial infections. Furthermore, the bacterial toxin coronatine induces the formation of de novo ER bodies in leaves and its virulence function is partially dependent on this structure. Finally, we show that performance of the polyphagous beet armyworm herbivore Spodoptera exigua increases in plants lacking ER bodies. Altogether, we provide new evidence for the role of the ER bodies in plant immune responses.[Formula: see text] Copyright (c) 2021 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license" |
| Keywords: | "*Arabidopsis/genetics/metabolism *Arabidopsis Proteins/genetics/metabolism Endoplasmic Reticulum Gene Expression Regulation, Plant Plant Leaves/metabolism Pseudomonas syringae/metabolism ER bodies Pseudomonas syringae Spodoptera exigua plant immunity;" |
| Notes: | "MedlineRufian, Jose S Elmore, James M Bejarano, Eduardo R Beuzon, Carmen R Coaker, Gitta L eng R01 GM092772/GM/NIGMS NIH HHS/ R35 GM136402/GM/NIGMS NIH HHS/ 2021/06/11 Mol Plant Microbe Interact. 2021 Sep; 34(9):1001-1009. doi: 10.1094/MPMI-11-20-0330-SC. Epub 2021 Sep 29" |
