Hugenholtzia roseola

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Hugenholtzia roseola
Systematics
Department : Bacteroidetes
Class : Cytophagia
Order : Cytophagales
Family : Cytophagaceae
Genre : Hugenholtzia
Type : Hugenholtzia roseola
Scientific name
Hugenholtzia roseola
( Lewin 1969) Hahnke et al. 2017

Hugenholtzia roseola is a type of bacteria that belongs to the division of Bacteroidetes .

Appearance

Hugenholtzia roseola forms long cell threads with a length of more than 50 µm. There are no flagella . Spores are not formed. The gram test is negative. The colonies are colored red. The main carotenoid is flexixanthin . The catalase test is negative.

Growth and metabolism

Hugenholtzia roseola is strictly aerobic and chemo-organotrophic . Metabolism is breathing . Although found in fresh water, it tolerates salinity and also grows on media with sea water. The highest temperature for growth is 40 ° C.

Systematics

The species Hugenholtzia roseola belongs to the family of the Bernardetiaceae , which in turn belongs to the class Cytophagia and is the type species and at the same time the only species of Hugenholtzia . It was recreated in 2017, Flexibacter roseolus is the basonym of the species, it was originally placed in the family of the Cytophagaceae , which is also included under the class Cytophagia. The species was first described in 1969 by Ralph A. Lewin . Based on genetic studies of the species in the Bacteroidetes department , the original systematic assignment of many species to the Flexibacter genus was no longer tenable and the majority of the species were assigned to other genera.

etymology

The generic name Hugenholtzia was chosen in honor of the microbiologist Philip Hugenholtz . Philip Hugenholtz is working on the Genomic Encyclopedia of Bacteria and Archaea (GEBA) project , which deals with the use of genetic data in establishing the systematics of bacteria and archaea . The species name H. roseola is derived from the Latin adjective "roseus", which means something like "rose-colored", and refers to the color of the colonies . The species name H. roseolus is derived from the Latin adjective "roseus", which means something like "rose-colored", and refers to the color of the colonies .

Individual evidence

  1. ↑ JP Euzéby: List of Prokaryotic Names with Standing in Nomenclature - Eisenibacter (as of June 4, 2019)
  2. ↑ a b Richard L. Hahnke et al .: Genome-Based Taxonomic Classification of Bacteroidetes In: Frontiers in Microbiology . December 20, 2016 Link

literature

  • Jiri Hausler: Freshwater Flora of Central Europe, Vol. 20: Schizomycetes . Springer, 1982, ISBN 978-3-8274-2141-8 , pp. 152 .
  • War, NR; Ludwig, W .; Whitman, WB; Hedlund, BP; Paster, BJ; Staley, JT; Ward, N .; Brown, D .; Parte, A .: Bergey's Manual of Systematic Bacteriology. Volume 4: The Bacteroidetes, Spirochaetes, Tenericutes (Mollicutes), Acidobacteria, Fibrobacteres, Fusobacteria, Dictyoglomi, Gemmatimonadetes, Lentisphaerae, Verrucomicrobia, Chlamydiae, and Planctomycetes . Springer, 2010, ISBN 978-0-387-68572-4 , pp. 392-397 .