Marie Vogel Kolte

Introduction Plants engage in a wealth of interactions with beneficial and pathogenic bacteria and fungi and therefore need to monitor their surroundings. To this end, cell-surface receptors, such as lysin motif (LysM) receptors, perceive microbe-associated molecular patterns (MAMPs) and elicit immunity responses or initiate symbiotic associations (Buendia et al., 2018).

Abstract Plants perceive and respond to chitin derived from fungal cell walls through lysine motif (LysM) receptor kinases. In the model legume Medicago truncatula, CERK1 and LYR4 represent the LysM receptor pair important for chitin-triggered immunity signaling. Here, we show that both the active kinase receptor CERK1 and the pseudokinase receptor LYR4 contribute to immunity signaling, leading to the production of reactive oxygen species (ROS).