Table 1.

Sources of bacterial strains used in this study, pathogenicities on P. vulgaris, and isolation media

StrainSourcePathogenicity on P. vulgarisIsolation mediuma
Pseudomonas syringae pv. syringae B728aSnap beanPathogen (brown spot)KBR
Pseudomonas syringae pv. syringae 9B1Snap beanPathogen (brown spot)MS
Pseudomonas syringae pv. syringae 5B-530Snap beanPathogen (brown spot)MS
Pseudomonas syringae pv. syringae 5B-333Snap beanPathogen (brown spot)MS
Pseudomonas syringae pv. phaseolicola PpSG44Snap beanPathogen (halo blight)MS
Pseudomonas syringae pv. syringae NPS3136Snap beanNon-lesion-forming mutant (lemA::Tn5)KBR
Pseudomonas syringae MF714RSnap beanWeak pathogen or nonpathogenKBR
Pseudomonas syringae5B1143Snap beanNonpathogenMS
Pseudomonas syringae 1063PotatoNonpathogenMS
Pseudomonas syringae TLP2PotatoNonpathogenKBR
Pseudomonas syringaeCit7CitrusNonpathogenKBR
Pantoea agglomerans(Erwinia herbicola) WHL9HawthornNonpathogenKBN
Stenotrophomonas maltophilia(Xanthomonas maltophilia) BP1PotatoNonpathogenKBE
Methylobacterium organophilum SH1PKSnap beanNonpathogenMinimal + methanol
  • a KBR, KB amended with 100 μg of rifampin per ml; KBN, KB amended with 50 μg of nalidixic acid per ml; KBE, KB amended with 30 μg of erythromycin per ml; MS, selective medium of Mohan and Schaad.