Plants are continuously monitoring the presence of microorganisms to establish an adapted response. Plants commonly use pattern recognition receptors (PRRs) to perceive microbe- or pathogen-associated molecular patterns (MAMPs/PAMPs) which are microorganism molecular signatures. Located at the plant plasma membrane, the PRRs are generally receptor-like kinases (RLKs) or receptor-like proteins (RLPs). MAMP detection will lead to the establishment of a plant defense program called MAMP-triggered immunity (MTI). In this review, we overview the RLKs and RLPs that assure early recognition and control of pathogenic or beneficial bacteria. We also highlight the crucial function of PRRs during plant-microbe interactions, with a special emphasis on the receptors of the bacterial flagellin and peptidoglycan. In addition, we discuss the multiple strategies used by bacteria to evade PRR-mediated recognition.

Laboratoire Stress Défenses et Reproduction des Plantes URVVC EA 4707 Université de Reims Champagne Ardenne Reims France

The Sainsbury Laboratory Norwich Research Park Norwich UK

Université de Bourgogne UMR 1347 Agroécologie Pôle Interactions Plantes Micro organismes ERL CNRS 6300 Dijon France

Université de Bourgogne UMR 1347 Agroécologie Pôle Interactions Plantes Micro organismes ERL CNRS 6300 Dijon France ; Laboratory of Pathological Plant Physiology Institute of Experimental Botany Academy of Sciences of Czech Republic Prague Czech Republic

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