Natrialbales
Scientific classification Edit this classification
Domain: Archaea
Kingdom: Euryarchaeota
Class: Halobacteria
Order: Natrialbales
Gupta et al. 2015
Genus[1]

Natrialbales is an order of halophilic, chemoorganotrophic archaea within the class Haloarchaea.[2] The type genus of this order is Natrialba.[1]

The name Natrialbales is derived from the Latin term Natriabla, referring to the type genus of the order and the suffix "-ales", an ending used to denote an order. Together, Natrialbales refers to an order whose nomenclatural type is the genus Natrialba.

Biochemical characteristics and molecular signatures[2]

Members are halophilic chemoorganotrophs and are mainly isolated from high-salt environments such as saline lakes, soda lakes and salted hides. Some members are motile. Morphology is variable, including rod, coccus or pleomorphic shapes. Majority of the class are able to grow optimally in alkaline pH and do not possess gas vesicles. The DNA G+C content for this order ranges between 60-70 mol%.

This order can be reliably distinguished from other orders within the phylum Euryarchaeota by the presence of eight conserved signature proteins (CSPs) and two conserved signature indels (CSIs) present in the ribosomal operon protein and small GTP-binding protein.[2]

Historical systematics and taxonomy

As of 2021, Natrialbales contains one family, Natrialbaceae.[1] Members of this order was demarcated from the class Halobacteria, previously a large phylogenetically unrelated group of species with distinct biochemical characteristics and different ecological niches.[3][4][5] 16S rRNA based phylogenetic trees and morphological/physiological characteristics were not sufficient to clarify the evolutionary relationship above the genus level within the class Halobacteria.

In 2015, Gupta et al. proposed the division of the class Halobacteria into Halobacteriales, Haloferacales and Natrialbales based on comparative genomic analyses and the branching pattern of various phylogenetic trees constructed from several different datasets of conserved proteins and 16S rRNA sequences.[2] Molecular markers, specifically conserved signature indels, specific to this order were also identified as evidence supporting the division independent of phylogenetic trees.[2]

Phylogeny

The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN)[6] and National Center for Biotechnology Information (NCBI).[7]

16S rRNA based LTP_08_2023[8][9][10] 53 marker proteins based GTDB 08-RS214[11][12][13]

Halorubellus *

Haloarchaeobius *

Natronoarchaeum {"Natronoarchaeaceae"} *

Salinarchaeum {"Salinarchaeaceae"}

Natrialbaceae

Halovivax 2

Natronobiforma Sorokin et al. 2019

Saliphagus Yin et al. 2017

Halovarius Mehrshad et al. 2015 *

Natribaculum Liu et al. 2015 *

Natronobacterium Tindall et al. 1984

Halobiforma Hezayen et al. 2002

Halovivax Castillo et al. 2006

Natronococcus Tindall et al. 1984

Natrarchaeobaculum Sorokin et al. 2020

Natronolimnohabitans Sorokin et al. 2020

Natronolimnobius Itoh et al. 2005

Salinadaptatus Xue et al. 2020

Halopiger Gutierrez et al. 2007

Natrarchaeobius halalkaliphilus

Natronorubrum Xu et al. 1999

Natrialba Kamekura & Dyall-Smith 1996 (incl. Natrarchaeobius)

Natrinema 2

Halosolutus Sun et al. 2022

Halostagnicola Castillo et al. 2006

Natrinema 3

Haloterrigena

Natrinema 4

Natrinema McGenity et al. 1998

Salinarchaeum {"Salinarchaeaceae"}

Halostella {QS-9-68-17} *

Natronoarchaeum {"Natronoarchaeaceae"} *

Natrialbaceae

Halorubellus *

Haloarchaeobius *

Halovivax

Halovarius *

Natribaculum *

Natronobiforma

Saliphagus

Halostagnicola

Natronococcus

Natrarchaeobius corrig. Sorokin et al. 2020

Salinadaptatus

Natrarchaeobaculum

Halopiger

Halopiger djelfimassiliensis

Natronobacterium

Halobiforma

Natronolimnobius

Natrialba

Natronolimnohabitans

Haloterrigena

Natronorubrum

Natrinema

Note: * paraphyletic Halobacteriaceae

See also

References

  1. 1 2 3 "Order: Natrialbales". lpsn.dsmz.de. Retrieved 2022-07-12.
  2. 1 2 3 4 5 Gupta, Radhey S.; Naushad, Sohail; Baker, Sheridan (2015-03-01). "Phylogenomic analyses and molecular signatures for the class Halobacteria and its two major clades: a proposal for division of the class Halobacteria into an emended order Halobacteriales and two new orders, Haloferacales ord. nov. and Natrialbales ord. nov., containing the novel families Haloferacaceae fam. nov. and Natrialbaceae fam. nov". International Journal of Systematic and Evolutionary Microbiology. 65 (Pt_3): 1050–1069. doi:10.1099/ijs.0.070136-0. ISSN 1466-5026. PMID 25428416.
  3. ↑ Hirsch, Peter (2005), "Dichotomicrobium Hirsch and Hoffman 1989b, 495VP (Effective publication: Hirsch and Hoffman 1989a, 300)", Bergey’s Manual® of Systematic Bacteriology, New York: Springer-Verlag, pp. 513–518, doi:10.1007/0-387-29298-5_124, ISBN 0-387-24145-0, retrieved 2021-06-27
  4. ↑ Grant, William D.; Kamekura, Masahiro; McGenity, Terry J.; Ventosa, Antonio (2015-09-14). "Halobacteria class. nov". Bergey's Manual of Systematics of Archaea and Bacteria: 1. doi:10.1002/9781118960608.cbm00026. ISBN 9781118960608.
  5. ↑ Oren, Aharon (2012-02-01). "Taxonomy of the family Halobacteriaceae: a paradigm for changing concepts in prokaryote systematics". International Journal of Systematic and Evolutionary Microbiology. 62 (2): 263–271. doi:10.1099/ijs.0.038653-0. ISSN 1466-5026. PMID 22155757.
  6. ↑ J.P. Euzéby. "Natrialbales". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved 2021-11-17.
  7. ↑ Sayers; et al. "Natrialbales". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved 2022-06-05.
  8. ↑ "The LTP". Retrieved 20 November 2023.
  9. ↑ "LTP_all tree in newick format". Retrieved 20 November 2023.
  10. ↑ "LTP_08_2023 Release Notes" (PDF). Retrieved 20 November 2023.
  11. ↑ "GTDB release 08-RS214". Genome Taxonomy Database. Retrieved 10 May 2023.
  12. ↑ "ar53_r214.sp_label". Genome Taxonomy Database. Retrieved 10 May 2023.
  13. ↑ "Taxon History". Genome Taxonomy Database. Retrieved 10 May 2023.
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