CERK1, a LysM receptor kinase, is essential for chitin elicitor signaling in Arabidopsis

Ayako Miya, Premkumar Albert, Tomonori Shinya, Yoshitake Desaki, Kazuya Ichimura, Ken Shirasu, Yoshihiro Narusaka, Naoto Kawakami, Hanae Kaku, Naoto Shibuya

Research output: Contribution to journalArticlepeer-review

932 Citations (Scopus)


Chitin is a major component of fungal cell walls and serves as a microbe-associated molecular pattern (MAMP) for the detection of various potential pathogens in innate immune systems of both plants and animals. We recently showed that chitin elicitor-binding protein (CEBiP), plasma membrane glycoprotein with LysM motifs, functions as a cell surface receptor for chitin elicitor in rice. The predicted structure of CEBiP does not contain any intracellular domains, suggesting that an additional component(s) is required for signaling through the plasma membrane into the cytoplasm. Here, we identified a receptor-like kinase, designated CERK1, which is essential for chitin elicitor signaling in Arabidopsis. The KO mutants for CERK1 completely lost the ability to respond to the chitin elicitor, including MAPK activation, reactive oxygen species generation, and gene expression. Disease resistance of the KO mutant against an incompatible fungus, Alternaria brassicicola, was partly impaired. Complementation with the WT CERK1 gene showed cerk1 mutations were responsible for the mutant phenotypes. CERK1 is a plasma membrane protein containing three LysM motifs in the extracellular domain and an intracellular Ser/Thr kinase domain with autophosphorylation/myelin basic protein kinase activity, suggesting that CERK1 plays a critical role in fungal MAMP perception in plants.

Original languageEnglish
Pages (from-to)19613-19618
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Issue number49
Publication statusPublished - Dec 4 2007
Externally publishedYes


  • Host-pathogen interaction
  • N-acetylchitooligosaccharide
  • Plant immunity

ASJC Scopus subject areas

  • General


Dive into the research topics of 'CERK1, a LysM receptor kinase, is essential for chitin elicitor signaling in Arabidopsis'. Together they form a unique fingerprint.

Cite this