Haloarchaea: Difference between revisions

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'''Haloarchaea''' ('''halophilic archaea''', '''halophilic archaebacteria''', '''halobacteria''')<ref name="Fendrihan">{{cite journal | vauthors = Fendrihan S, Legat A, Pfaffenhuemer M, Gruber C, Weidler G, Gerbl F, Stan-Lotter H | title = Extremely halophilic archaea and the issue of long-term microbial survival | journal = Re/Views in Environmental Science and Bio/Technology | volume = 5 | issue = 2–3 | pages = 203–218 | date = August 2006 | pmid = 21984879 | pmc = 3188376 | doi = 10.1007/s11157-006-0007-y }}</ref> are a [[class (biology)|class]] of [[prokaryotic]] [[organism]]s under the [[archaea]]l [[phylum]] [[Euryarchaeota]],<ref name=NCBI></ref> found in [[water]] [[Saturated and unsaturated compounds|saturated]] or nearly saturated with [[salt]]. Halobacteria are now recognized as [[archaea]] rather than [[bacteria]] and are one of the largest groups. The name 'halobacteria' was assigned to this group of organisms before the existence of the [[Domain (biology)|domain]] [[Archaea]] was realized, and while valid according to [[Taxonomy (biology)|taxonomic]] rules, should be updated.<ref>{{cite journal | vauthors = DasSarma P, DasSarma S | title = On the origin of prokaryotic "species": the taxonomy of halophilic Archaea | journal = Saline Systems | volume = 4 | issue = 1 | pages = 5 | date = May 2008 | pmid = 18485204 | pmc = 2397426 | doi = 10.1186/1746-1448-4-5 | doi-access = free }}</ref> Halophilic archaea are generally referred to as '''haloarchaea''' to distinguish them from halophilic bacteria.
 
These [[microorganism]]s are among the [[halophile]] organisms, that they require high salt concentrations to grow, with most species requiring more than 2.0M [[NaCl]] for growth and survival.<ref>{{cite book | vauthors = DasSarma S, DasSarma P |chapter= Halophiles |date=2017 |title=eLS |pages=1–13 |publisher=John Wiley & Sons, Ltd |doi=10.1002/9780470015902.a0000394.pub4|isbn=9780470015902}}</ref> They are a distinct evolutionary branch of the [[Archaea]] distinguished by the possession of ether-linked [[lipid]]s and the absence of murein in their [[cell wall]]s.