Isolation, Characterization, and Genomic Investigation of a Phytopathogenic Strain of .

is ubiquitous in diverse environmental habitats. It merits significant concern because of its increasing incidence of nosocomial and community-acquired infection in immunocompromised patients and multiple drug resistance. It is rarely reported as a phytopathogen except in causing white stripe disease of rice in India and postharvest fruit rot of Lanzhou lily. For this study, and strains were simultaneously isolated from soft rot leaves of in Guangzhou, China, and were both demonstrated to be pathogenic to the host. Compared with the strains, strains propagated faster for greater growth in lysogeny broth medium and produced no cellulases or polygalacturonases, but did produce more proteases and fewer extracellular polysaccharides. Furthermore, strains swam and swarmed dramatically less on semisolid media, but formed a great many more biofilms. Both and strains isolated from clivia caused rot symptoms on other monocot hosts, but not on dicots. Similar to previously reported strains isolated from other sources, the strain JZL8 survived under many antibiotic stresses. The complete genome sequence of strain JZL8 consists of a chromosome of 4,635,432 bp without a plasmid. Pan-genome analysis of JZL8 and 180 other strains identified 50 genes that are unique to JZL8, seven of which implicate JZL8 as the potential pathogen contributor in plants. JZL8 also contains three copies of Type I Secretion System machinery; this is likely responsible for its greater production of proteases. Findings from this study extend our knowledge on the host range of and provide insight into the phenotypic and genetic features underlying the plant pathogenicity of JZL8.