Table 4: Physiological characteristics of the soda lake bacterial isolates.
Isolate |
pH of Growth(Optimum Growth)
|
Growth at (oC) |
Growth in Presence of NaCl (w/v) |
Grouping |
25 |
37 |
45 |
55 |
65 |
0 |
5 |
10 |
15 |
18 |
LBW 2719 |
7.0 - 11.0 (pH 10.5) |
+ |
++ |
+ |
+ |
+a |
++ |
+b |
- |
- |
- |
Sub-group I |
Group 1Facultativelyalkaliphilic bacillusisolates |
LBW 226 |
7.0 - 11.0 (pH 10.5) |
+ |
++ |
+ |
+ |
+a |
++ |
+b |
- |
- |
- |
LBW 318 |
7.0 - 11.0 (pH 10.5) |
+ |
++ |
+ |
+ |
+a |
++ |
+b |
- |
- |
- |
LBS 77 |
7.0 - 11.0 (pH 10.5) |
+ |
++ |
+ |
+ |
+a |
++ |
+b |
- |
- |
- |
LBK 261 |
7.0 - 11.0 (pH 10.5) |
+ |
++ |
++ |
+ |
- |
++ |
++ |
+ |
- |
- |
Sub-group II |
LBW 4512 |
7.0 - 11.0 (pH 10.5) |
+ |
++ |
++ |
+ |
- |
++ |
++ |
+ |
- |
- |
LBW 327 |
7.0 - 11.0 (pH 10.5) |
+ |
++ |
++ |
+ |
- |
++ |
++ |
+ |
- |
- |
LBW 434 |
7.0 - 11.0 (pH 10.5) |
+ |
++ |
++ |
+ |
- |
++ |
++ |
+ |
- |
- |
LBW 7526a |
7.0 - 11.0 (pH 10.5) |
+ |
++ |
++ |
+ |
- |
++ |
++ |
+ |
- |
- |
LBW 39 |
7.0 - 11.0 (pH 10.5) |
+ |
++ |
++ |
+ |
- |
++ |
++ |
+ |
- |
- |
LBW 7526b |
7.0 - 11.0 (pH 10.5) |
+ |
++ |
++ |
+ |
- |
++ |
++ |
+ |
- |
- |
LBW 328 |
7.0 - 11.0 (pH 10.5) |
+ |
++ |
++ |
+ |
- |
++ |
++ |
+ |
- |
- |
LBS 16 |
7.0 - 11.0 (pH 10.5) |
+ |
++ |
++ |
+ |
- |
++ |
++ |
+ |
- |
- |
LBW 625 |
7.0 - 11.0 (pH 10.5) |
+ |
++ |
++ |
+ |
- |
++ |
++ |
+ |
- |
- |
LBW 446 |
7.0 - 11.0 (pH 10.5) |
+ |
++ |
++ |
+ |
- |
++ |
++ |
+ |
- |
- |
LBW 5117 |
7.0 - 11.0 (pH 10.5) |
+ |
++ |
++ |
+ |
- |
++ |
++ |
+ |
- |
- |
LBW 313 |
˃ 7.0 - 11.0 (pH 10.5) |
+ |
++ |
++ |
- |
- |
++ |
++ |
+ |
+ |
- |
Group 1Obligately alkaliphilic bacillus isolates |
LBW 317 |
˃ 7.0 - 11.0 (pH 10.5) |
+ |
++ |
++ |
- |
- |
++ |
++ |
+ |
+ |
- |
All isolates grew aerobically, except for isolates LBW 313 and LBW 317 which grew both aerobically and anaerobically.
Key:
+, Growth; ++, Optimum growth; +a, Poor growth after 72 h, better growth after 96 h; +b, Weak growth; -, no growth