Distribution of T6SS loci among Pantoea and Erwinia species. The presence (+) or absence (-) of ortholgous T6SS loci for the various Pantoea and Erwinia strains are shown. A neighbor-joining tree (bootstrap n = 1,000) based on a ClustalW alignment of GyrB amino acid sequences indicates the phylogenetic relationship of the strains.
De Maayer et al. BMC Genomics 2011 12:576 doi:10.1186/1471-2164-12-576