Chloroflexia
Chloroflexia | |
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Scientific classification ![]() | |
Domain: | Bacteria |
Phylum: | Chloroflexota |
Class: | Chloroflexia corrig. Gupta et al. 2013 |
Orders | |
Synonyms | |
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The Chloroflexia are a class of
Etymology
The name "Chloroflexi" is a Neolatin plural of "Chloroflexus", which is the name of the first genus described. The noun is a combination of the Greek chloros (χλωρός)
Taxonomy and molecular signatures
The Chloroflexia class is a group of deep branching photosynthetic bacteria (with the exception of Herpetosiphon and Kallotenue species) that currently consist of three orders: Chloroflexales, Herpetosiphonales, and Kallotenuales.[1][5][6][7][8] The Herpetosiphonales and Kallotenuales each consist of a single genus within its own family, Herpetosiphonaceae (Herpetosiphon) and Kallotenuaceae (Kallotenue), respectively, whereas the Chloroflexales are more phylogenetically diverse.[1][5][7]
Microscopic distinguishing characteristics
Members of the phylum
Genetic distinguishing characteristics
Comparative genomic analysis has recently refined the taxonomy of the class Chloroflexia, dividing the Chloroflexales into the suborder
Physiological distinguishing characteristics
Additional support for the division of the Chloroflexales into two suborders is the observed differences in physiological characteristics where each suborder is characterized by distinct
In addition to demarcating taxonomic ranks, CSIs may play a role in the unique characteristics of members within the clade: In particular, a four-amino-acid insert in the protein pyruvate flavodoxin/ferredoxin oxidoreductase, a protein which plays important roles in photosynthetic organisms, has been found exclusively among all members in the genus Chloroflexus, and is thought to play an important functional role.[18][19]
Additional work has been done using CSIs to demarcate the phylogenetic position of Chloroflexia relative to other photosynthetic groups such as the Cyanobacteria.
Phylogeny
16S rRNA based | 120 marker proteins based GTDB 07-RS207[25][26][27] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Taxonomy
The currently accepted taxonomy is as follows:[1][5][28]
Class Chloroflexia Gupta et al. 2013
- Genus "Dehalobium" Wu et al. 2002[29]
- Genus "Candidatus Lithoflexus" Saghai et al. 2020
- Genus "Candidatus Sarcinithrix" Nierychlo et al. 2019
- Order "Thermobaculales"
- Family "Thermobaculaceae"
- Genus "Thermobaculum" Botero et al. 2004
- Family "Thermobaculaceae"
- Order Kallotenuales Cole et al. 2013
- Family Kallotenuaceae Cole et al. 2013
- Genus Kallotenue Cole et al. 2013
- Family Kallotenuaceae Cole et al. 2013
- Order Herpetosiphonales Gupta et al. 2013
- Family Herpetosiphonaceae Gupta et al. 2013
- Genus "Candidatus Anthektikosiphon" Ward, Fischer & McGlynn 2020
- Genus FlavilitoribacterGarcía-López et al. 2020]
- Family Herpetosiphonaceae Gupta et al. 2013
- Order Chloroflexales Gupta et al. 2013
- Suborder RoseiflexineaeGupta et al. 2013
- Family Roseiflexaceae Gupta et al. 2013 ["Kouleotrichaceae" Mehrshad et al. 2018]
- Genus "Kouleothrix" Kohno et al. 2002
- Genus Heliothrix Pierson et al. 1986
- Genus Roseiflexus Hanada et al. 2002
- Family Roseiflexaceae Gupta et al. 2013 ["Kouleotrichaceae" Mehrshad et al. 2018]
- Suborder ChloroflexineaeGupta et al. 2013
- Family Chloroflexaceae Gupta et al. 2013
- Genus Candidatus Chloranaerofilum Thiel et al. 2016
- Genus Chloroflexus Pierson & Castenholz 1974 ["Chlorocrinis"]
- Family Oscillochloridaceae Gupta et al. 2013
- Genus Candidatus Chloroploca Gorlenko et al. 2014
- Genus Chloronema ♪ Dubinina & Gorlenko 1975
- Genus Oscillochloris Gorlenko & Pivovarova 1989
- Genus Candidatus Viridilinea Grouzdev et al. 2018
- Family Chloroflexaceae Gupta et al. 2013
- Suborder
See also
References
- ^ PMID 22903492.
- Perseus Project
- ^ Lewis, Charlton T. and Charles Short, A Latin Dictionary. Oxford: Clarendon Press, 1879. Online version at Perseus
- ISBN 978-0-387-24143-2. British Library no. GBA561951.
- ^ PMID 23950149.
- PMID 10361294.
- ^ a b Sayers; et al. "Chloroflexia". taxonomy database. National Center for Biotechnology Information (NCBI). Retrieved 25 October 2016.
- .
- PMID 20637628.
- PMID 24535491.
- PMID 16228576.
- PMID 27279642.
- PMID 9841678.
- PMID 11050348.
- PMID 12167362.
- ^ Hanada, S.; Pierson, B.K. (2006). "The Family Chloroflexaceae". In Dworkin, M.; Falkow, S.; Rosenberg, E.; Schleifer, K.H.; Stackebrandt, E. (eds.). The Prokaryotes: A handbook on the biology of bacteria. New York: Springer. pp. 815–842.
- ^ Pierson, B.K.; Castenholz, R.W. (1992). "The Family Chloroflexaceae". In Balows, A.; Truper, H.G.; Dworkin, M.; Harder, W.; Schleifer, K.H. (eds.). The Prokaryotes. New York: Springer. pp. 3754–3775.
- PMID 20414806.
- PMID 1692410.
- PMID 27638319.
- PMID 22628531.
- ^ "The LTP". Retrieved 20 November 2023.
- ^ "LTP_all tree in newick format". Retrieved 20 November 2023.
- ^ "LTP_08_2023 Release Notes" (PDF). Retrieved 20 November 2023.
- ^ "GTDB release 07-RS207". Genome Taxonomy Database. Retrieved 20 June 2022.
- ^ "bac120_r207.sp_labels". Genome Taxonomy Database. Retrieved 20 June 2022.
- ^ "Taxon History". Genome Taxonomy Database. Retrieved 20 June 2022.
- .
- PMID 11823222.
Further reading
- Garrity GM, Holt JG (2001). "Phylum BVI. Chloroflexi phy. nov". In Boone, D.R., Castenholz, R.W. (eds.). The Archaea and the deeply branching and phototrophic Bacteria. Bergey's Manual of Systematic Bacteriology. Vol. 1 (2nd ed.). New York: Springer Verlag. p. 169. ISBN 978-0-387-98771-2.
External links
![](http://upload.wikimedia.org/wikipedia/commons/thumb/d/df/Wikispecies-logo.svg/34px-Wikispecies-logo.svg.png)