| Ectothiorhodospiraceae | |
|---|---|
| Scientific classification | |
| Domain: | Bacteria |
| Kingdom: | Pseudomonadati |
| Phylum: | Pseudomonadota |
| Class: | Gammaproteobacteria |
| Order: | Chromatiales |
| Family: | Ectothiorhodospiraceae |
| Genera [1] [2] | |
| |
The Ectothiorhodospiraceae are a family of purple sulfur bacteria, distinguished by producing sulfur globules outside of their cells. [4] The cells are rod-shaped, vibrioid, or spirilla, and they are able to move using flagella. In general, they are marine and prefer anaerobic conditions. [4] Ectothiorhodospiraceae are a vibrio bacteria that require salty living conditions to survive and grow: classifying them as slightly halophilic. [4] Like all purple sulfur bacteria, they are capable of photosynthesis. To complete this energy process, Sulfur compounds are used as electron donors for carbon fixation in the pentose phosphate pathway. [4] This elemental sulfur accumulates outside of the cells. [4]
Ectothiorhodospiraceae mobilis Table of Characteristics [4]
| Test Type | Test | Characteristics |
|---|---|---|
| Colony Characteristics | Size | 0.7-1.0μm |
| Morphological Character | Shape | short spiral/ bent rod |
| Gram | - | |
| Physiological Character | Motility | + |
| NaCl optimum % | 2-3 | |
| pH optimum | 7.6-8.0 | |
| Acid Produced From | Hydrogen | + |
| Sulfide | + | |
| Lactate | +/- | |
| Acetate | + | |
| Malate | + | |
| Succinate | + | |
| Ethanol | - | |
| Propanol | - |
Note: + = positive, - = negative
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