Comparative genomics of host adaptive traits in Xanthomonas translucens pv. graminis

BMC Genomics

Table 4 Virulence-related gene clusters identified in X. t. pv. graminis strains

Gene cluster	Genomes^a	Reference
type I secretion system	core genome	[83]
type II secretion system	core genome	[84]
type III secretion system, non-canonical	core genome	[12]
type VI secretion system	Xtg2, Xtg9, Xtg10, NCPPB 3709*	[51]
type IV pilus	core genome	[59]
flagellum	NCPPB 3709	[85]
regulation of pathogenicity factors	core genome	[86]
xanthan biosynthesis^IPD	core genome	[87]
lipopolysaccharide biosynthesis^IPD	core genome	[54]

^a The Xtg core genome comprises orthologous CDS shared by five Swiss strains, i.e. Xtg2, Xtg9, Xtg10, Xtg29, and CFBP 2053 as well as NCPPB 3709 and ICMP 6431 isolated in Norway and New Zealand, respectively. Asterisks (*) indicate strains whose genomes revealed a reduced number of homologues in comparison to the type VI secretion system gene cluster identified for Xtg2 (Additional file 5: Table S3)
^IPD Slight intra-pathovar differences (IPD) of gene clusters conserved among the seven Xtg strains were observed for the one encoding for xanthan biosynthesis (gene fusion of gumK and gumL in the genome of NCBBP 3709) and the gene cluster of LPS biosynthesis (gene separation events due to nonsense mutations in two individual genes among different Xtg strains)

ISSN: 1471-2164