Polynucleobacter asymbioticus Hahn et al., 2016
- Dataset
- English Wikipedia - Species Pages
- Rank
- SPECIES
Classification
- phylum
- Pseudomonadota
- class
- Betaproteobacteria
- order
- Burkholderiales
- family
- Burkholderiaceae
- genus
- Polynucleobacter
- species
- Polynucleobacter asymbioticus
Abstract
Polynucleobacter asymbioticus is an aerobic, catalase- and oxidase-positive, chemo-organotrophic, nonmotile, free-living bacterium of the genus Polynucleobacter. The type strain was isolated from a small pond located in the Austrian Alps in the area of SalzburgHahn, M.W., Pöckl, M. and Wu, Q.L. (2005) Low intraspecific diversity in a Polynucleobacter subcluster population numerically dominating bacterioplankton of a freshwater pond. Appl. Environ. Microbiol. 71: 4539–4547. and described as a new subspecies of Polynucleobacter necessarius in 2009.Hahn, M.W., Lang, E., Brandt, U., Wu, Q.L., and Scheuerl, T. (2009) Emended description of the genus Polynucleobacter and the species P. necessarius and proposal of two subspecies, P. necessarius subspecies necessarius subsp. nov. and P. necessarius subsp. asymbioticus subsp. nov. Int. J. Syst. Evol. Microbiol. 59: 2002-2009. The classification of the type strain was hampered by the fact that its closest described relative represented obligate endosymbionts, i.e. P. necessarius, not available as a pure culture suitable for standard tests (DNA-DNA hybridization experiments) for delineation of prokaryotic species. Therefore, the strain was preliminarily placed in the subspecies P. necessarius subsp. asymbioticus. Later sequencing of the genome of the type strainMeincke, L., A. Copeland, A. Lapidus, S. Lucas, K. W. Berry, T. Glavina Del Rio, N. Hammon, E. Dalin, H. Tice, S. Pitluck, P. Richardson, D. Bruce, L. Goodwin, C. Han, R. Tapia, J. C. Detter, J. Schmutz, T. Brettin, F. Larimer, M. Land, L. Hauser,, N. C. Kyrpides, N. Ivanova, M. Göker, T. Woyke, Q. L. Wu, M. Pöckl, M. W. Hahn, and H.-P. Klenk (2012). Complete genome sequence of Polynucleobacter necessarius subsp. asymbioticus type strain (QLW-P1DMWA-1T). Standards in Genomic Sciences 6:74-83. revealed that the strain represented a novel species within the genus Polynucleobacter. Therefore, its taxonomic rank was lifted from the subspecies to the species level.Hahn M. W., Schmidt J., Pitt A., Taipale S. J., Lang E. (2016). Reclassification of four Polynucleobacter necessarius strains as Polynucleobacter asymbioticus comb. nov., Polynucleobacter duraquae sp. nov., Polynucleobacter yangtzensis sp. nov., and Polynucleobacter sinensis sp. nov., and emended description of the species Polynucleobacter necessarius. Int. J. Syst. Evol. Microbiol. 66: 2883–2892. Strains of P. asymbioticus dwell as planktonic organisms in acidic, humic-rich freshwater systems.Hoetzinger M., Hahn M.W., Jezberová J., Schmidt J., Koll U. (2017). Microdiversification of a pelagic Polynucleobacter species is mainly driven by acquisition of genomic islands from a partially interspecific gene pool. Appl. Environ. Microbiol. 83: 3 e02266-16 Comparative genome analyses revealed that P. asymbioticus represents an atypical member of the family Burkholderiaceae regarding its small genome size and its passive lifestyle.Hahn, M.W., Scheuerl, T., Jezberová, J., Koll, U., Jezbera, J., Šimek, K., Vannini, C., Petroni, G., and Q. L. Wu (2012) The passive yet successful way of planktonic life: Genomic and experimental analysis of the ecology of a free-living Polynucleobacter population. PLoS ONE 7(3): e32772. A recent study used a collection of 37 P. asymbioticus strains isolated from various ponds located in a larger region of the Austrian Alps to gain insights in the evolution of Polynucleobacter bacteria.Hoetzinger M., Hahn M.W., Jezberová J., Schmidt J., Koll U. (2017). Microdiversification of a pelagic Polynucleobacter species is mainly driven by acquisition of genomic islands from a partially interspecific gene pool. Appl. Environ. Microbiol. 83: 3 e02266-16