Ecological genomics of pseudomonas syringae

Pseudomonas syringae is well known as a model bacterial phytopathogen in the laboratory, environment, and the field. A focus on understanding mechanisms of virulence in planta has motivated extensive research into genetic, genomic, and evolutionary factors that influence disease. However, in recent years, appreciation has grown for the life cycle of P. syringae outside of the context of plant disease. This bacterial species survives and thrives across many environments, with its broad ecology shaped through interactions with phage, bacteria, fungi, and insects in addition to traditional host plants. Here we explore what is known about the genetic and genomic basis of these diverse ecological interactions. We highlight how both new and old approaches can be used to unify our understanding of these relationships and map a path forward enabled by high-throughput genomics.