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The Arabidopsis CERK1associated kinase PBL27 connects chitin perception to MAPK activation

These authors contributed equally to this work as first authors

These authors contributed equally to this work as third authors

Chitin receptor CERK1 transmits immune signals to the intracellular MAPK cascade in plants. This occurs via phosphorylation of MAPKKK5 by the CERK1associated kinase PBL27, providing a missing link between pathogen perception and signaling output.

Chitin receptor CERK1 transmits immune signals to the intracellular MAPK cascade in plants. This occurs via phosphorylation of MAPKKK5 by the CERK1associated kinase PBL27, providing a missing link between pathogen perception and signaling output.

CERK1associated kinase PBL27 interacts with MAPKKK5 at the plasma membrane.

Chitin perception induces disassociation of PBL27 and MAPKKK5.

PBL27 functions as a MAPKKK kinase.

Phosphorylation of MAPKKK5 by PBL27 is enhanced upon phosphorylation of PBL27 by CERK1.

Phosphorylation of MAPKKK5 by PBL27 is required for chitininduced MAPK activation in planta.

Kenta Yamada, Koji Yamaguchi, Tomomi Shirakawa, Hirofumi Nakagami, Akira Mine, Kazuya Ishikawa, Masayuki Fujiwara, Mari Narusaka, Yoshihiro Narusaka, Kazuya Ichimura, Yuka Kobayashi, Hidenori Matsui, Yuko Nomura, Mika Nomoto, Yasuomi Tada, Yoichiro Fukao, Tamo Fukamizo, Kenichi Tsuda, Ken Shirasu, Naoto Shibuya, Tsutomu Kawasaki

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