| Test |
Isolated Thiobacillus |
T.nonellus |
T.versutus |
T.delicatus |
T.thioparus |
| Motility |
- |
- |
+ |
- |
+ |
| Formation of surface pellicle of sulfur particle on thiosulfate medium |
+ |
+ |
- |
+ |
+ |
| Growth as chemolithotroph |
- |
- |
- |
- |
+ |
| Anaerobic growth and denitrification with thiosulfate |
- |
- |
- |
+ |
- |
| Growth on nutrient agar |
+ |
+ |
+ |
- |
- |
| Growth on thiosulfate agar |
+ |
+ |
+ |
+ |
+ |
| Mixotrophic growth with thiosulfate +glucose |
+ |
+ |
+ |
+ |
- |
| Mixotrophic growth with thiosulfate + yeast extract |
+ |
+ |
- |
+ |
- |
| Autotrophic growth with sulfur |
- |
- |
- |
+ |
+ |
| Optimum temperature |
30 |
25-30 |
30-35 |
30-35 |
28oC |
| Optimum Ph |
7 |
7.5-7.9 |
7.5-7.9 |
5.5-6.0 |
6.5-7.2 |
| Final pH when grown on thiosulfate medium |
5 |
5.0-5.5 |
5.8 -6.5 |
2.5-3.5 |
3.5-4.0 |
| Proposed species |
Thiobacillus novellus |
