TABLE 2.

Maximum specific growth rates of two environmental isolates and a laboratory straina in anaerobic cultures at 10, 15, and 37°C

Temp and organismMaximum specific growth rate (h−1) ± SEb
Minimal mediumSoil extract medium
37°C
    K-120.379 ± 0.029 B0.394 ± 0.029 B
    Isolate 30.528 ± 0.029 A0.524 ± 0.029 A
    Isolate 50.555 ± 0.029 A0.505 ± 0.029 A
15°C
    K-120.061 ± 0.031 F0.036 ± 0.031 H
    Isolate 30.166 ± 0.031 D0.194 ± 0.031 C
    Isolate 50.140 ± 0.031 E0.148 ± 0.031 E
10°C
    K-120.016 ± 0.017 I0.019 ± 0.017 I
    Isolate 30.063 ± 0.017 F0.061 ± 0.017 F
    Isolate 50.042 ± 0.017 GH0.044 ± 0.017 G
  • a Isolates 3 and 5 are environmental isolates; K-12 is a laboratory strain.

  • b Capital letters next to growth rates represent Bonferroni groupings for within-temperature comparisons. Growth rates followed by the same letter are not significantly different.