Background: The pPT23A family of plasmids appears to be indigenous to the plant pathogen Pseudomonas
syringae and these plasmids are widely distributed and widely transferred among pathovars of P. syringae and
related species. pPT23A-family plasmids (PFPs) are sources of accessory genes for their hosts that can include genes
important for virulence and epiphytic colonization of plant leaf surfaces. The occurrence of repeated sequences
including duplicated insertion sequences on PFPs has made obtaining closed plasmid genome sequences difficult.
Therefore, our objective was to obtain complete genome sequences from PFPs from divergent P. syringae
pathovars and also from strains of P. syringae pv. syringae isolated from different hosts.
