The Ectothiorhodospiraceae are a family of
purple sulfur bacteria
The purple sulfur bacteria (PSB) are part of a group of Pseudomonadota capable of photosynthesis, collectively referred to as purple bacteria. They are anaerobic or microaerophilic, and are often found in stratified water environments includi ...
, distinguished by producing sulfur globules outside of their cells.
[George M. Garrity: '']Bergey's Manual of Systematic Bacteriology
''Bergey's Manual of Systematic Bacteriology'' is the main resource for determining the identity of prokaryotic organisms, emphasizing bacterial species, using every characterizing aspect.
The manual was published subsequent to ''Bergey's Manual ...
''. 2. Auflage. Springer, New York, 2005, Volume 2: ''The Proteobacteria, Part B: The Gammaproteobacteria'' The cells are rod-shaped, vibrioid, or spirilla, and they are able to move using
flagella
A flagellum (; : flagella) (Latin for 'whip' or 'scourge') is a hair-like appendage that protrudes from certain plant and animal sperm cells, from fungal spores ( zoospores), and from a wide range of microorganisms to provide motility. Many pr ...
. In general, they are marine and prefer anaerobic conditions.
Ectothiorhodospiraceae are a vibrio bacteria that require salty living conditions to survive and grow: classifying them as slightly halophilic.
Like all purple sulfur bacteria, they are capable of
photosynthesis
Photosynthesis ( ) is a system of biological processes by which photosynthetic organisms, such as most plants, algae, and cyanobacteria, convert light energy, typically from sunlight, into the chemical energy necessary to fuel their metabo ...
. To complete this energy process, Sulfur compounds are used as electron donors for carbon fixation in the pentose phosphate pathway.
This elemental sulfur accumulates outside of the cells.
''Ectothiorhodospiraceae mobilis'' Table of Characteristics
Note: + = positive, - = negative
References
External links
* J.P. Euzéby: List of Prokaryotic names with Standing in Nomenclature
Ectothiorhodospiraceae
Chromatiales
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