Ectothiorhodospiraceae

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Ectothiorhodospiraceae
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Domain: Bacteria
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 TypeTestCharacteristics
Colony CharacteristicsSize0.7-1.0μm
Morphological CharacterShapeshort spiral/ bent rod
Gram-
Physiological CharacterMotility+
NaCl optimum %2-3
pH optimum7.6-8.0
Acid Produced FromHydrogen+
Sulfide+
Lactate+/-
Acetate+
Malate+
Succinate+
Ethanol-
Propanol-

Note: + = positive, - = negative

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References

  1. Euzéby JP, Parte AC. "Ectothiorhodospiraceae". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved August 26, 2021.
  2. Parker, Charles Thomas; Wigley, Sarah; Garrity, George M (14 May 2009). Parker, Charles Thomas; Garrity, George M (eds.). "Taxonomic Abstract for the families". NamesforLife, LLC. doi:10.1601/tx.2154 (inactive 2024-04-17).{{cite journal}}: Cite journal requires |journal= (help)CS1 maint: DOI inactive as of April 2024 (link)
  3. Dirren S, Posch T. (2016). "Promiscuous and specific bacterial symbiont acquisition in the amoeboid genus Nuclearia (Opisthokonta)". FEMS Microbiol Ecol. 92 (8): fiw105. doi: 10.1093/femsec/fiw105 . PMID   27199347.
  4. 1 2 3 4 5 6 George M. Garrity: Bergey's Manual of Systematic Bacteriology . 2. Auflage. Springer, New York, 2005, Volume 2: The Proteobacteria, Part B: The Gammaproteobacteria