Perception of a divergent family of phytocytokines by the Arabidopsis receptor kinase MIK2

Rhodes, Jack, Yang, Huanjie, Moussu, Steven, Boutrot, Freddy, Santiago, Julia and Zipfel, Cyril (2021) Perception of a divergent family of phytocytokines by the Arabidopsis receptor kinase MIK2. Nature Communications, 12 (1). ISSN 2041-1723

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Abstract

Plant genomes encode hundreds of receptor kinases and peptides, but the number of known plant receptor-ligand pairs is limited. We report that the Arabidopsis leucine-rich repeat receptor kinase LRR-RK MALE DISCOVERER 1-INTERACTING RECEPTOR LIKE KINASE 2 (MIK2) is the receptor for the SERINE RICH ENDOGENOUS PEPTIDE (SCOOP) phytocytokines. MIK2 is necessary and sufficient for immune responses triggered by multiple SCOOP peptides, suggesting that MIK2 is the receptor for this divergent family of peptides. Accordingly, the SCOOP12 peptide directly binds MIK2 and triggers complex formation between MIK2 and the BRASSINOSTEROID INSENSITIVE 1-ASSOCIATED KINASE 1 (BAK1) co-receptor. MIK2 is required for resistance to the important root pathogen Fusarium oxysporum. Notably, we reveal that Fusarium proteomes encode SCOOP-like sequences, and corresponding synthetic peptides induce MIK2-dependent immune responses. These results suggest that MIK2 may recognise Fusarium-derived SCOOP-like sequences to induce immunity against Fusarium. The definition of SCOOPs as MIK2 ligands will help to unravel the multiple roles played by MIK2 during plant growth, development and stress responses.

Item Type: Article
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Depositing User: LivePure Connector
Date Deposited: 02 Feb 2021 01:02
Last Modified: 12 Apr 2021 23:46
URI: https://ueaeprints.uea.ac.uk/id/eprint/79127
DOI: 10.1038/s41467-021-20932-y

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