Molecular mechanisms of chitin recognition and immune signaling by LysM-receptors

Plants have the ability to recognize microbe-associated molecular patterns (MAMPs) and initiate various defense responses. Chitin is a representative fungal MAMP that triggers defense signaling in a wide range of plant species. In rice, OsCEBiP and OsCERK1 form a receptor complex and play critical r...

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Published inPhysiological and molecular plant pathology Vol. 95; pp. 60 - 65
Main Authors Kaku, Hanae, Shibuya, Naoto
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.07.2016
Subjects
Chitin
LysM-receptor
MAMP
OsCEBiP
OsCERK1
OsCERK1
OsCEBiP
Chitin
MAMP
LysM-receptor
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Summary:Plants have the ability to recognize microbe-associated molecular patterns (MAMPs) and initiate various defense responses. Chitin is a representative fungal MAMP that triggers defense signaling in a wide range of plant species. In rice, OsCEBiP and OsCERK1 form a receptor complex and play critical roles in chitin-triggered defense signaling. Recently, we found the formation of a unique sandwich-type dimer of OsCEBiP plays an important role for activation of chitin signaling. We now understand why N-acetyl groups and the longer chitin-oligosaccharides are required for receptor binding. We also found OsCERK1 is a bifunctional molecule acting in defense and also in AM symbiosis. •OsCEBiP is the major receptor for chitin elicitor binding in rice.•The central LysM (LysM1) of OsCEBiP plays an important role for chitin binding.•Ligand-induced, sandwich-type dimerization of OsCEBiP triggers defense signaling.•OsCERK1 is a “bifunctional receptor” for defense and symbiosis signaling.
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ISSN:0885-5765
1096-1178
DOI:10.1016/j.pmpp.2016.02.003