Biology:Thiomargarita
| Thiomargarita | |
|---|---|
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| Stained micrograph of Thiomargarita namibiensis | |
Scientific classification 
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| Domain: | Bacteria |
| Phylum: | Pseudomonadota |
| Class: | Gammaproteobacteria |
| Order: | Thiotrichales |
| Family: | Thiotrichaceae |
| Genus: | Thiomargarita Schulz et al. 1999[1][2] |
| Species | |
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Thiomargarita is a genus (family Thiotrichaceae) which includes the vacuolate sulfur bacteria species Thiomargarita namibiensis, Candidatus Thiomargarita nelsonii, and Ca. Thiomargarita joergensii.[4] In 2022, scientists working in a Caribbean mangrove discovered an extremely large member of the genus, provisionally named T. magnifica, whose cells are easily visible to the naked eye at up to 2 centimetres (0.79 in) long.[5]
Representatives of this genus can be found in a variety of environments that are rich in hydrogen sulfide, including methane seeps, mud volcanoes, brine pools, and organic-rich sediments such as those found beneath the Benguela Current and Humboldt Current. These bacteria are generally considered to be chemolithotrophs that utilize reduced inorganic species of sulfur as metabolic electron donors to produce energy for the fixation of carbon into biomass. Carbon fixation occurs via the Calvin Benson Bassham cycle and possibly the reverse Krebs cycle.[6]
References
- ↑ "Thiomargarita" (in English). Bethesda, MD: National Center for Biotechnology Information. https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&id=90372&lvl=3&lin=f&keep=1&srchmode=1&unlock. "Lineage( full ) cellular organisms; Bacteria; Proteobacteria; Gammaproteobacteria; Thiotrichales; Thiotrichaceae"
- ↑ Schulz, H.N., Brinkhoff, T., Ferdelman, T.G., Marine, M.H., Teske, A., Jorgensen, B.B. "Dense populations of a giant sulfur bacterium in Namibian shelf sediments." Science (1999) 284:493-495.
- ↑ Volland, Jean-Marie; Gonzalez Rizzo, Silvina; Gros, Olivier; Tyml, Tomáš; Ivanova, Natalia; Schulz, Frederik; Goudeau, Danielle; Elisabeth, Nathalie H et al. (23 Jun 2022), A centimeter-long bacterium with DNA compartmentalized in membrane-bound organelles, 376, Science, pp. 1453-1458, https://www.science.org/doi/10.1126/science.abb3634
- ↑ Salman, Verena; Amann, Rudolf; Girnth, Anne-Christin; Polerecky, Lubos; Bailey, Jake V.; Høgslund, Signe; Jessen, Gerdhard; Pantoja, Silvio et al. (2011-06-01). "A single-cell sequencing approach to the classification of large, vacuolated sulfur bacteria". Systematic and Applied Microbiology 34 (4): 243–259. doi:10.1016/j.syapm.2011.02.001. ISSN 1618-0984. PMID 21498017.
- ↑ Pennisi, Elizabeth (23 February 2022). "Largest bacterium ever discovered has an unexpectedly complex cell". Science. doi:10.1126/science.ada1620. https://www.science.org/content/article/largest-bacterium-ever-discovered-has-unexpectedly-complex-cells. Retrieved 25 February 2022.
- ↑ Flood, Beverly E.; Fliss, Palmer; Jones, Daniel S.; Dick, Gregory J.; Jain, Sunit; Kaster, Anne-Kristin; Winkel, Matthias; Mußmann, Marc et al. (2016-01-01). "Single-Cell (Meta-)
Genomics of a Dimorphic Candidatus Thiomargarita nelsonii Reveals Genomic Plasticity". Frontiers in Microbiology 7: 603. doi:10.3389/fmicb.2016.00603. PMID 27199933.
Wikidata ☰ Q15105848 entry
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