Barley endosomal MONENSIN SENSITIVITY1 is a target of the powdery mildew effector CSEP0162 and plays a role in plant immunity

© The Author(s) 2022. Published by Oxford University Press on behalf of the Society for Experimental Biology.

Bibliographische Detailangaben
Veröffentlicht in:Journal of experimental botany. - 1985. - 74(2023), 1 vom: 01. Jan., Seite 118-129
1. Verfasser: Liao, Wenlin (VerfasserIn)
Weitere Verfasser: Nielsen, Mads E, Pedersen, Carsten, Xie, Wenjun, Thordal-Christensen, Hans
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Journal of experimental botany
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Blumeria hordei Hordeum vulgare Barley powdery mildew MON1 effector encasement immunity multivesicular body mehr... pathogen resistance Monensin 906O0YJ6ZP Plant Proteins
Beschreibung
Zusammenfassung:© The Author(s) 2022. Published by Oxford University Press on behalf of the Society for Experimental Biology.
Encasements formed around haustoria and biotrophic hyphae as well as hypersensitive reaction (HR) cell death are essential plant immune responses to filamentous pathogens. In this study we examine the components that may contribute to the absence of these responses in susceptible barley attacked by the powdery mildew fungus. We find that the effector CSEP0162 from this pathogen targets plant MONENSIN SENSITIVITY1 (MON1), which is important for the fusion of multivesicular bodies to their target membranes. Overexpression of CSEP0162 and silencing of barley MON1 both inhibit encasement formation. We find that the Arabidopsis ecotype No-0 has resistance to powdery mildew, and that this is partially dependent on MON1. Surprisingly, we find the MON1-dependent resistance in No-0 not only includes an encasement response, but also an effective HR. Similarly, silencing of MON1 in barley also blocks Mla3-mediated HR-based powdery mildew resistance. Our results indicate that MON1 is a vital plant immunity component, and we speculate that the barley powdery mildew fungus introduces the effector CSEP0162 to target MON1 and hence reduce encasement formation and HR
Beschreibung:Date Completed 27.12.2022
Date Revised 09.09.2024
published: Print
Citation Status MEDLINE
ISSN:1460-2431
DOI:10.1093/jxb/erac403