Receptor-like kinases and receptor-like proteins: keys to pathogen recognition and defense signaling in plant innate immunity

Abstract

Plants have evolved multiple layers of defense against various pathogens in the environment. Receptor-like kinases/proteins (RLKs/RLPs) are on the front lines of the battle between plants and pathogens since they are present at the plasma membrane and perceive signature molecules from either the invading pathogen or damaged plant tissue. With a few notable exceptions, most RLKs/RLPs are positive regulators of plant innate immunity. In this review, we summarize recently discovered RLKs/RLPs that are involved in plant defense responses against various classes of pathogens. We also describe what is currently known about the mechanisms of RLK-mediated initiation of signaling via protein-protein interactions and phosphorylation.

Keywords

receptor-like kinases (RLKs) / receptor-like proteins (RLPs) / biotrophic fungi / necrotrophic fungi / bacterial pathogens

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Acknowledgments

We thank the members of the Ramonell laboratory for helpful discussions and review of the manuscript. This work was supported by the University of Alabama and by a grant from the US Department of Agriculture (Grant no. 2007-01652 to K. M. R.).

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg