Comparative genomics of 43 strains of Xanthomonas citri pv. citri reveals the evolutionary events giving rise to pathotypes with different host ranges.

ABSTRACT:

Background

The identification of factors involved in the host range definition and evolution is a pivotal challenge in the goal to predict and prevent the emergence of plant bacterial disease. To trace the evolution and find molecular differences between three pathotypes of Xanthomonas citri pv. citri that may explain their distinctive host ranges, 42 strains of X. citri pv. citri and one outgroup strain, Xanthomonas citri pv. bilvae were sequenced and compared.

Results

The strains from each pathotype form monophyletic clades, with a short branch shared by the A(w) and A pathotypes. Pathotype-specific recombination was detected in seven regions of the alignment. Using Ancestral Character Estimation, 426 SNPs were mapped to the four branches at the base of the A, A*, A(w) and

SUBMITTER: Gordon JL 

PROVIDER: S-EPMC4690215 | biostudies-literature | 2015 Dec

REPOSITORIES: biostudies-literature