Fig 2.

Survival of P. syringae strains following 8 h of exposure to hyperosmotic stress (A), during exposure to drying on soybean leaves (B) and maize leaves (C) in a growth chamber, and on leaves of host and nonhost plant species in the field (D). For panel A, strains were grown in ½21C medium and exposed to 0 to 1 M NaCl for 8 h; the survival rate was calculated as the proportion of cells that were present at 0 M NaCl. For panel B, strains were grown in ½21C medium and introduced onto plant leaves; cells were enumerated by plating, and the proportion of cells present at 0 h was determined. For panel D, strains were grown in King's B medium, DC3000 cells were introduced onto tomato (host) and soybean (nonhost) leaves, and B728a cells were introduced onto bean (host) and soybean (nonhost) leaves; plants for panel D were grown and inoculated under field conditions. The values shown are means ± standard errors (n = 6 [A to C] or 12 [D]).