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Chloroflexales

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Chloroflexales
Scientific classification Edit this classification
Domain: Bacteria
Phylum: Chloroflexota
Class: Chloroflexia
Order: Chloroflexales
Gupta et al. 2013
Families

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Chloroflexales is an order of bacteria in the class Chloroflexia.[1] The clade is also known as filamentous anoxygenic phototrophic bacteria (FAP),[2] as the order contains phototrophs that do not produce oxygen. These bacteria are facultative aerobic.[3] They generally use chemotrophy when oxygen is present and switch to light-derived energy when otherwise. Most species are heterotrophs, but a few are capable of photoautotrophy.[2]

The order can be divided into two suborders. Chloroflexineae ("Green FAP", "green non-sulfur bacteria") is the better-known one. This suborder uses chlorosomes, a specialized antenna complex, to pass light energy to the reaction center. Roseiflexineae ("Red FAP") on the other hand has no such ability. The named colors are not absolute, as growth conditions such as oxygen concentration will make a green FAP appear green, brown, or reddish-orange by inducing changes in pigment composition.[2]

Taxonomy

The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN)[4] and National Center for Biotechnology Information (NCBI).[5]

Phylogeny

16S rRNA based LTP_01_2022[6][7][8] 120 marker proteins based GTDB 07-RS207[9][10][11]
Chloroflexales

Herpetosiphon {Herpetosiphonaceae}

Roseiflexaceae
Chloroflexaceae

See also

References

  1. ^ Garrity, George M. (2001). Bergey's manual of systematic bacteriology (2nd ed.). New York: Springer. pp. 427–446. ISBN 978-0-387-21609-6.
  2. ^ a b c Thweatt, Jennifer L.; Canniffe, Daniel P.; Bryant, Donald A. (2019). "Biosynthesis of chlorophylls and bacteriochlorophylls in green bacteria". Advances in Botanical Research. 90: 35–89. doi:10.1016/bs.abr.2019.03.002.
  3. ^ Gupta RS, Chander P, George S (2013). "Phylogenetic framework and molecular signatures for the class Chloroflexia and its different clades; proposal for division of the class Chloroflexia class. nov. [corrected] into the suborder Chloroflexineae subord. nov., consisting of the emended family Oscillochloridaceae and the family Chloroflexaceae fam. nov., and the suborder Roseiflexineae subord. nov., containing the family Roseiflexaceae fam. nov". Antonie van Leeuwenhoek. 103 (1): 99–119. doi:10.1007/s10482-012-9790-3. PMID 22903492.
  4. ^ J.P. Euzéby. "Chloroflexales". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved 2022-07-20.
  5. ^ Sayers; et al. "Chloroflexales". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved 2022-07-20.
  6. ^ "The LTP". Retrieved 20 June 2022.
  7. ^ "LTP_all tree in newick format". Retrieved 20 June 2022.
  8. ^ "LTP_01_2022 Release Notes" (PDF). Retrieved 20 June 2022.
  9. ^ "GTDB release 07-RS207". Genome Taxonomy Database. Retrieved 20 June 2022.
  10. ^ "bac120_r207.sp_labels". Genome Taxonomy Database. Retrieved 20 June 2022.
  11. ^ "Taxon History". Genome Taxonomy Database. Retrieved 20 June 2022.
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