Aquaspirillum
| Aquaspirillum | |
|---|---|
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | Beta Proteobacteria
|
| Order: | Neisseriales
|
| Family: | |
| Genus: | Aquaspirillum
|
Aquaspirillum (ak'wă-spī-ril'ŭm) is a genus of aerobic bacteria in the family Neisseriaceae that lives in freshwater.
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]
![[icon]](/wiki/File:Wiki_letter_w_cropped.svg){kind=small} | This section needs expansion. You can help by adding to it. (September 2016) |
Species
The following are species of Aquaspirillum.[4]
- Aquaspirillum serpens (Type species)[5]
- Aquaspirillum bengal
- Aquaspirillum fasciculus
- Aquaspirillum putridiconchylium
- Aquaspirillum dispar
- Aquaspirillum autotrophicum
- Aquaspirillum aquaticum
- Aquaspirillum delicatum
- Aquaspirillum gracile
- Aquaspirillum metamorphum
- Aquaspirillum psychrophilum
- Aquaspirillum sinuosum
- Aquaspirillum giesbergeri
- Aquaspirillum anulus
- Aquaspirillum magnetotacticum
- Aquaspirillum polymorphum
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
- ^ Medilexicon Dictionary Retrieved March 18, 2016
- ^ Web2 Resources
- ^ Hylelmon,P.B., J.S. Wells, N.R.Krieg and H.W. Jannasch (1973) The genus Spirillum: a taxonomic study
- ^ Springer Link Article by Bruno Pot, Monique Gillis, Jozef De Ley
- ^ lpsn.dsmz.de
- ^ 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.
- ^ Pot, B. and Gillis, M. 2015. Aquaspirillum. Bergey's Manual of Systematics of Archaea and Bacteria. 1–39.