Universität zu Köln

Barghahn, Sina, Arnal, Gregory, Jain, Namrata, Petutschnig, Elena ORCID: 0000-0002-0846-1878, Brumer, Harry and Lipka, Volker (2021). Mixed Linkage beta-1,3/1,4-Glucan Oligosaccharides Induce Defense Responses in Hordeum vulgare and Arabidopsis thaliana. Front. Plant Sci., 12. LAUSANNE: FRONTIERS MEDIA SA. ISSN 1664-462X

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Abstract

Plants detect conserved microbe-associated molecular patterns (MAMPs) and modified self molecules produced during pathogen infection [danger associated molecular patterns (DAMPs)] with plasma membrane-resident pattern recognition receptors (PRRs). PRR-mediated MAMP and/or DAMP perception activates signal transduction cascades, transcriptional reprogramming and plant immune responses collectively referred to as pattern-triggered immunity (PTI). Potential sources for MAMPs and DAMPs are microbial and plant cell walls, which are complex extracellular matrices composed of different carbohydrates and glycoproteins. Mixed linkage beta-1,3/1,4-glucan (beta-1,3/1,4-MLG) oligosaccharides are abundant components of monocot plant cell walls and are present in symbiotic, pathogenic and apathogenic fungi, oomycetes and bacteria, but have not been detected in the cell walls of dicot plant species so far. Here, we provide evidence that the monocot crop plant H. vulgare and the dicot A. thaliana can perceive beta-1,3/1,4-MLG oligosaccharides and react with prototypical PTI responses. A collection of Arabidopsis innate immunity signaling mutants and >100 Arabidopsis ecotypes showed unaltered responses upon treatment with beta-1,3/1,4-MLG oligosaccharides suggesting the employment of a so far unknown and highly conserved perception machinery. In conclusion, we postulate that beta-1,3/1,4-MLG oligosaccharides have the dual capacity to act as immune-active DAMPs and/or MAMPs in monocot and dicot plant species.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Barghahn, Sina UNSPECIFIED UNSPECIFIED UNSPECIFIED Arnal, Gregory UNSPECIFIED UNSPECIFIED UNSPECIFIED Jain, Namrata UNSPECIFIED UNSPECIFIED UNSPECIFIED Petutschnig, Elena UNSPECIFIED orcid.org/0000-0002-0846-1878 UNSPECIFIED Brumer, Harry UNSPECIFIED UNSPECIFIED UNSPECIFIED Lipka, Volker UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-581245
DOI:	10.3389/fpls.2021.682439
Journal or Publication Title:	Front. Plant Sci.
Volume:	12
Date:	2021
Publisher:	FRONTIERS MEDIA SA
Place of Publication:	LAUSANNE
ISSN:	1664-462X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language RECEPTOR-LIKE KINASE; INNATE IMMUNITY; MOLECULAR-PATTERNS; CHITIN PERCEPTION; BETA-1,3 GLUCANS; ELICITOR; CERK1; FLAGELLIN; PATHOGEN; SPECIFICITY Multiple languages Plant Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/58124