Flavobacterium xinjiangense

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Flavobacterium xinjiangense
Systematics
Department : Bacteroidetes
Class : Flavobacteriia
Order : Flavobacteriales
Family : Flavobacteriaceae
Genre : Flavobacterium
Type : Flavobacterium xinjiangense
Scientific name
Flavobacterium xinjiangense
Zhu et al. 2003

Flavobacterium xinjiangense is a type of bacteria . The species is one of the Bacteroidetes .

features

The species Flavobacterium xinjiangense is Gram-negative . In a PYG nutrient medium (peptone yeast glucose nutrient solution) the colonies are round, smooth, convex with a clearly defined border. The cells are rod-shaped, the length is between 2.5-5 µm and 0.8 µm in width. There are no flagella , and there is no gliding motility . The sliding movement can be observed in many other species of the genus . In the first descriptions of the genus , Flavobacterium branchiophilum was described as the only bacterium in the genus that does not move smoothly. In the course of time, however, many other species have been described that are also not able to move with the help of a sliding movement, such as Flavobacterium antarcticum , F. degerlachei and F. frigidarium

Flavobacterium xinjiangense , like all types of Flavobacterium, is heteroorganotrophic . The metabolic pathway is aerobic respiration . Maximum chloride values (NaCl) at which growth is possible are 3.5%. Flavobacterium xinjiangense is psychrophilic (“likes the cold”), 11 ° C is the optimal temperature for growth. From 20 ° C, no more growth takes place. The catalase test and the oxidase test , as with most types of Flavobacterium, are positive. Nitrate is not reduced. The pigment flexirubin , which occurs frequently in the Flavobacteriaceae family , is not present here. The GC content of the DNA is 34%.

Systematics

Flavobacterium xinjiangense was first described by Fei Zhu and co-workers in 2003. It belongs to the family Flavobacteriaceae , which in turn belongs to the class Bacteroidetes .

etymology

The genus name Flavobacterium is based on the Latin word "Bacterium" (bacterium) and the Latin word "flavus", which means yellow. The latter refers to the colors of the colonies, which range from relatively pale to pronounced yellow. The species name F. xinjiangense refers to the locality in the Chinese area of Xinjiang . There the bacterium was found in the frozen ground on a glacier . Several new types of bacteria that specialize in cold environments (i.e. are psychrophilic) have already been isolated here. Examples are Flavobacterium omnivorum , also described by Fei Zhu and co-workers, and Flavobacterium glaciei described by a group led by De-Chao Zhang . It is a relatively simple and closed ecosystem there .

Individual evidence

  1. ↑ Martin Dworkin et al. (Ed.) The Prokaryotes. A Handbook of the Biology of Bacteria . Volume 7, Springer, New York 2006, ISBN 978-0-387-33493-6 .
  2. ↑ 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. 152-153 .
  3. ↑ Systematics according to: JP Euzéby: List of Prokaryotic names with Standing in Nomenclature (LPSN) - Flavobacterium (as of April 1, 2019)
  4. ↑ Zhu, F., Wang, S. & Zhou, P .: Flavobacterium xinjiangense sp. nov. and Flavobacterium omnivorum sp. nov., novel psychrophiles from the China No. 1 glacier. In: International Journal of System and Evolution Microbiology 2003, 53, pp. 853-857. doi : 10.1099 / ijs.0.02310-0
  5. ↑ De-Chao Zhang, Hong-Can Liu, Yu-Hua Xin, Yong Yu, Pei-Jin Zhou and Yu-Guang Zhou: Planomicrobium glaciei sp. nov., a psychrotolerant bacterium isolated from a glacier In: International Journal of Systematic and Evolutionary Microbiology 2009, Volume 59, No. 6, pp. 1387-1390. doi : 10.1099 / ijs.0.002592-0

literature

  • Zhu, F., Wang, S. & Zhou, P .: Flavobacterium xinjiangense sp. nov. and Flavobacterium omnivorum sp. nov., novel psychrophiles from the China No. 1 glacier. In: International Journal of System and Evolution Microbiology 2003, 53, pp. 853-857. doi : 10.1099 / ijs.0.02310-0
  • 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. 152-153 .