RPGR and infection: The partial effect of the type 2 repressor encoded by orf14 of φRs551 is different from the type 1 repressor encoded by orf15 of another filamentous R. solanacearum phage RSM3, since the loss of virulence caused by infection with φRSM3 can be fully restored when the ORF15 of φRSM3 was deleted (Addy et al., 2012a).