Aquirufa

Aquirufa is a genus of red-pigmented freshwater bacteria affiliated with the family of Cytophagaceae.[1][2]

Aquirufa
Scientific classification
Domain:	Bacteria
Phylum:	Bacteroidetes
Class:	Flavobacteria
Order:	Flavobacteriales
Family:	Cytophagaceae
Genus:	Aquirufa Pitt et al. 2019[1]
Type species
Aquirufa antheringensis
Species
A. antheringensis Pitt et al. 2019 A. nivalisilvae Pitt et al. 2019 A. rosea Sheu et al. 2020 A. beregesia Pitt et al. 2020 A. ecclesiirivi Pitt et al. 2020

Bacteria of this genus were mainly observed in running and standing freshwater systems. It is not known, if these bacteria predominently dwell as attached bacteria in biofilms or if they have a pelagic lifestyle[1]. Currently, the genus harbours five species, which were mainly isolated from freshwater ecosystems located in Austria. The type strain of A. antheringensis[1] was isolated from Antheringer Creek running through the town Anthering near the city of Salzburg. The type strain of A. nivalisilvae[1] was isolated from a small intermittent freshwater pond located in a forest in Schneegattern (Lengau), Austria. The scientific name of this species referes to the name of the forest, where it was first discovered. This species also includes a strain initially described as Allopseudarcicella aquatilis [3], which was shown to be a later synonym of A. nivalisilvae[4]. The description of the species A. rosea[5] is based on a type strain obtained from a freshwater lake in Taiwan. The type strains of the recently described species A. beregesia [4] was isolated from Kirchstaettbach, a small creek with medium conductivity and nearly neutral pH located in Obertrum, 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 [4] originates from the same small creek as the type strain of A. beregesia and its species name refers to the name of this creek.

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.[1]

References

1. Pitt A., Schmidt J., Koll U., Hahn M.W. (2019) Aquirufa antheringensis gen. nov., sp. nov. and Aquirufa nivalisilvae sp. nov., representing a new genus of widespread freshwater bacteria. Int. J. Syst. Evol. Microbiol.; 69:2739-2749.
2. "Aquirufa". www.uniprot.org. Uniprot. Retrieved 2020-08-04.
3. Kim H., Kang H., Joh K. (2019) Allopseudarcicella aquatilis gen. nov., sp. nov., isolated from freshwater. Int. J. Syst. Evol. Microbiol.; 69:3574-3580.
4. 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.; 0:0.
5. 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.