Receptor for microbe-associated molecular patterns (MAMPs) that induces a BAK1-dependent basal immune response to necrotrophic fungi (e.g. S.sclerotiorum) in the presence of MAMPs (e.g. flg22 and SCLEROTINIA CULTURE FILTRATE ELICITOR1 (SCFE1) from the necrotrophic fungal pathogen S. sclerotiorum). Functionality seems to depend on the presence of the receptor kinase SOBIR1 as an adapter protein (PubMed:24104566). Required for full non-host resistance to bacterial pathogens (e.g. P.syringae pv phaseolicola) (PubMed:18434605). Induced by microbe-associated molecular patterns (MAMPs) such as LPS, HrpZ, flg22 and oomycete-(NPP1) (PubMed:18434605). Accumulates upon infection by the soil-borne necrotrophic pathogen F.oxysporum f. sp. lentis and associated with nitric oxide (NO) production; this induction is prevented by the plant growth promoting saprophytic fungus T.asperelloides (PubMed:24283937). Induced by NaCl and mannitol (PubMed:27099374). Reduced basal defense leading to an increased susceptibility to the non-host bacteria such as P.syringae pv phaseolicola (Psp 1448A) (PubMed:18434605). Increased susceptibility to S.sclerotiorum strain 1980 and to the related fungus B.cinerea. Impaired SCLEROTINIA CULTURE FILTRATE ELICITOR1- (SCFE1) and flg22-dependent ethylene production (PubMed:24104566). Belongs to the RLP family.