The Role of WRKY Transcription Factors in Plant Immunity

Plants constantly face a plethora of abiotic and biotic stresses in their natural habitat.Adapting to such changes requires a great degree of phenotypic plasticity that is mainly determined by the plant's genome.We currently do not know how plants are able to integrate the multitude of partly synergistic/partly antagonistic environmental signals that enable them to respond properly under any given condition.What has become apparent, however, is that plants are capable of extensive reprogramming of their transcriptome in a highly dynamic and temporal manner.This regulation in response, leading to adaptive plasticity of plants in highly variable environments, is mainly achieved by enforcement of a network of various transcription factors (TFs).WRKY TFs are a large family of regulatory proteins forming such a network (Eulgem and Somssich, 2007).They are involved in various plant processes but most notably in coping with diverse biotic and abiotic stresses.In this update, we will restrict our attention to the role of WRKY TFs in plant immunity.