TABLE 1.

Resistance of A. brasilense wild-type strain Sp7 and a phbC mutant to osmotic pressure and desiccation

StrainNo. of viable cells after treatmenta
Osmotic pressureOsmotic shockDesiccation
Glucose (1 M)Glucose (2 M)
Wild-type Sp7(2.5 ± 0.4) × 108 A(10 ± 0.54) × 106 A(7.8 ± 0.6) × 106 A(2.85 ± 1.2) × 108 A
phbC mutant(1.5 ± 0.1) × 108 A(14 ± 0.8) × 102 B(1.8 ± 1.2) × 106 B(4 ± 2.7) × 107 B
  • a The initial number of cells for each treatment was 6 × 108 cells. The experiment was performed three times, and similar results were obtained each time. The values are the means ± standard errors for three replicates per treatment. Within a column different letters after values indicate that there is a significant difference at a P value of 0.05, as determined by a t test.