Several wall-associated kinases participate positively and negatively in basal defense against rice blast fungus

摘要: Receptor-like kinases are well-known to play key roles in disease resistance. Among them, the Wall-associated (WAKs) have been shown be positive regulators of fungal resistance several plant species. WAK genes often transcriptionally regulated during infection but pathways involved this regulation not known. In rice, OsWAK gene family is significantly amplified compared Arabidopsis. The possibility that WAKs participate different ways basal defense has addressed. Moreover, direct requirement rice OSWAK regulating explored. Here we show using (Oryza sativa) loss-of-function mutants four selected genes, individual OsWAKs required for quantitative blast fungus, Magnaporthe oryzae. While OsWAK14, OsWAK91 and OsWAK92 positively regulate resistance, OsWAK112d a negative regulator addition, very early transcriptional triggered by chitin partially under control receptor CEBiP. Finally, H2O2 production sufficient enhance expression infection. We conclude studied part response, potentially mediated from cell walls. This work also shows some OsWAKs, like OsWAK112d, may act as