''Aquirufa'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of red-

pigment A pigment is a colored material that is completely or nearly insoluble in water. In contrast, dyes are typically soluble, at least at some stage in their use. Generally dyes are often organic compounds whereas pigments are often inorganic compo ...

freshwater Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does include ...

bacteria affiliated with the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

of ''

Cytophagaceae Cytophagaceae is a family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of it ...

''. Bacteria of this genus were mainly observed in running and standing freshwater systems. It is not known, if these bacteria predominantly dwell as attached bacteria in

biofilm A biofilm comprises any syntrophic consortium of microorganisms in which cells stick to each other and often also to a surface. These adherent cells become embedded within a slimy extracellular matrix that is composed of extracellular ...

s or if they have a pelagic lifestyle. Currently, the genus harbours seven species, which were mainly isolated from

freshwater ecosystem Freshwater ecosystems are a subset of Earth's aquatic ecosystems. They include lakes, ponds, rivers, streams, springs, bogs, and wetlands. They can be contrasted with marine ecosystems, which have a larger salt content. Freshwater habitats can be ...

s located in

Austria Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous ...

. The type strain of ''A. antheringensis'' was isolated from Antheringer Creek running through the town Anthering near the city of

Salzburg Salzburg (, ; literally "Salt-Castle"; bar, Soizbuag, label=Bavarian language, Austro-Bavarian) is the List of cities and towns in Austria, fourth-largest city in Austria. In 2020, it had a population of 156,872. The town is on the site of the ...

. The type strain of ''A. nivalisilvae'' was isolated from a small intermittent freshwater pond located in a forest in Schneegattern ( Lengau), Austria. The scientific name of this species refers to the name of the forest, where it was first discovered. This species also includes a strain initially described as ''Allopseudarcicella aquatilis'', which was shown to be a later synonym of ''A. nivalisilvae''.Pitt A., Koll U., Schmidt J., Hahn M.W. (2020) ''Aquirufa ecclesiirivi'' sp. nov. and ''Aquirufa beregesia'' sp. nov., isolated from a small creek and classification of ''Allopseudarcicella aquatilis'' as a later heterotypic synonym of ''Aquirufa nivalisilvae''
Int. J. Syst. Evol. Microbiol.; 70:4602–4609
/ref> The description of the species ''A. rosea''Sheu S.Y., Chen T.Y., Chen W.M. (2020) ''Aquirufa rosea'' sp. nov., isolated from a freshwater lake
Int. J. Syst. Evol. Microbiol.; 70:3145-3153.
/ref> is based on a type strain obtained from a freshwater lake in

Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the nort ...

. The type strains of the recently described species ''A. beregesia'' was isolated from Kirchstaettbach, a small creek with medium conductivity and nearly neutral pH located in

Obertrum Obertrum am See is a market town in the district of Salzburg-Umgebung in the state of Salzburg in Austria. It had a population of 4,639 as of January 1, 2014. Geography The town is located roughly 15 km north of Salzburg in the Flachgau ...

, Austria. The name of this species refers to the high school Bundesrealgymnasium Seekirchen (acronym BRGS) to honor students of the school, which were involved in isolation of the strain, as well as in creation of the species epithet. The type strain of ''Aquirufa ecclesiirivi'' originates from the same small creek as the type strain of ''A. beregesia'' and its species name refers to the name of this creek. The type strain of the species ''Aquirufa aurantiipilula'' Pitt A., Koll U., Schmidt J., Neumann-Schaal M., Wolf J., Krausz S., Hahn M.W. (2022) ''Aquirufa lenticrescens'' sp. nov. and ''Aquirufa aurantiipilula'' sp. nov.: two new species of a lineage of widespread freshwater bacteria
Archives of Microbiology volume 204, Article number: 356
/ref> was isolated from Moosbach, a small creek running through Mondsee, a small town located near

, Austria. Strain 9H-EGSE, which is the type strain of the species ''Aquirufa lenticrescens'' originated from Grossegelsee, a small natural pond located near the town of

Mattsee Mattsee is a market town at the eponymous lake in the district of Salzburg-Umgebung in the Austrian state of Salzburg. History About 765 Duke Tassilo III of Bavaria established the Mattsee Benedictine Abbey, which became a part of the Diocese of ...

, Austria. BLAST searches against GenBank indicated that ''Aquirufa'' spp. were frequently detected by cultivation-independent investigations on bacterial diversity of freshwater systems, however, in many cases the detections were misinterpreted as '' Pseudarcicella'' (a related genus) detection.

References

{{Taxonbar, from=Q98078669 Bacteria genera Cytophagia