Family: Inoviridae

Genus: Coriovirus

Distinguishing features

Xanthomonas phage Cf1c is the exemplar isolate of the species Xanthomonas virus Cf1c and infects Xanthomonas campestris var. citri. The genome is of 7,308 bases encodes 9 proteins (Kuo et al., 1991). Virions of the strain Xantomonas phage XacF1 are 600 nm long and produce phenotypic changes in the host, including lower levels of extracellular polysaccharide production, reduced motility, slower growth rate, and a dramatic reduction in virulence (Ahmad et al., 2014). Phages in this genus integrate into the host genome using the cellular XerC/D recombinase. Xanthomonas phage Cf1c produces clear plaques. 

Virion

See discussion under family description. 

Genome organisation and replication

See discussion under family description. 

Biology

Members of this genus infect Xanthomonas campestris. 

Species demarcation criteria

There is only one species in the genus. Members of additional species will be >5% different in the DNA sequence of their genomes as assessed using the BLASTn algorithm.