Aquaspirillum

Aquaspirillum (ak'wă-spī-ril'ŭm) is a genus of aerobic bacteria in the family Neisseriaceae that lives in freshwater.

Aquaspirillum
Scientific classification
Kingdom:
Phylum:
Class:
Beta Proteobacteria
Order:
Neisseriales
Family:
Genus:
Aquaspirillum

Description

The species have cells that are 0.2–1.5 mcm in diameter. Their motile cells have a fascicle of flagella on one or both ends, with the exception of one species.[1] They are rigid and generally helical, and are 0.2–1.4 um in diameter. They also have a special polar membrane near the flagella.[2]

Growth Requirements

Growth is optimal in 30–32° Celsius.[3]

Species

The following are species of Aquaspirillum.[4]

Phylogenetic Analysis

A phylogenetic analysis by NCBI showed data that suggested all species of Aquaspirillum, besides the type species, should be moved into their own respective genera as Aquaspirillum is phylogenetically heterogeneous.[6] However, no new genus for the misclassified species has been proposed, so they technically remain in Aquaspirillum.[7]

References

  1. Medilexicon Dictionary Retrieved March 18, 2016
  2. Web2 Resources
  3. Hylelmon,P.B., J.S. Wells, N.R.Krieg and H.W. Jannasch (1973) The genus Spirillum: a taxonomic study
  4. Springer Link Article by Bruno Pot, Monique Gillis, Jozef De Ley
  5. lpsn.dsmz.de
  6. Ding, L; Yokota, A (2002). "Phylogenetic analysis of the genus Aquaspirillum based on 16S rRNA gene sequences". FEMS Microbiol Lett. 212 (2): 165–9. doi:10.1016/s0378-1097(02)00747-4. PMID 12113929.
  7. Pot, B. and Gillis, M. 2015. Aquaspirillum. Bergey's Manual of Systematics of Archaea and Bacteria. 1–39.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.