THE PHYLOGENY OF BACTERIA FROM A MODERN ANTARCTIC REFUGE

被引:20
作者
FRANZMANN, PD
DOBSON, SJ
机构
[1] Cooperative Research Centre for the Antarctic and Southern Ocean Environment, Department of Agricultural Science, University of Tasmania, Hobart, 7001
关键词
ANTARCTIC PROKARYOTES; 16S RIBOSOMAL-RNA; PHYLOGENY; BIODIVERSITY; PSYCHOTROPHS;
D O I
10.1017/S0954102093000355
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The 16S rRNAs of nine new species of prokaryotes, that had been isolated from four lakes of the Vestfold Hills, have been sequenced. These sequences were compared with those of their closest taxonomic relatives available from publicly available databases. The Antarctic species were of wide diversity with representatives from the domains Archaea and Bacteria (sensu Woese). Generally, they were most closely related to organisms from marine environments. The sequence dissimilarity between the rRNA sequences of the Antarctic strains and their nearest known relatives suggest they diverged from each other much earlier than the establishment of their modern Antarctic habitat. The conserved nature of the 16S rRNA molecule suggests it may not be as useful for detecting evolutionary change in Antarctic prokaryotes as distinct from non-Antarctic prokaryotes. Although the optimal temperature for growth of each species is well above the temperature of its environment, each has a reduced optimal temperature for growth when compared with its taxonomic counterpart from non-Antarctic environments. The vast majority of Antarctic prokaryotes remains to be described.
引用
收藏
页码:267 / 270
页数:4
相关论文
共 29 条
  • [21] OLSEN G.J., LARSEN N., WOESE C.R., The ribosomal RNA database project, Nucleic Acids Research, 19, pp. 2017-2021, (1991)
  • [22] PARMELEE D.F., MAXSON S.J., BERNSTEIN N.P., Fowl cholera outbreak among brown skuas at Palmer Station, Antarctic Journal of the United States, 15, pp. 168-169, (1979)
  • [23] RATKOWSKY D.A., LOWRY R.K., MCMEEKIN T.A., STOKES A.N., CHANDLER R.E., Model for bacterial growth throughout the entire biokinetic range, Journal of Bacteriology, 154, pp. 1222-1226, (1983)
  • [24] RUGER H-J., TAN T.L., Community structures of cold and low-nutrient adapted heterotrophic sediment bacteria from the deep eastern tropical atlantic., Marine Ecology Progress Series, 84, pp. 83-93, (1992)
  • [25] SHIVAJI S., RAO S., SAISREE L., SHETH V., REDDY G.S.N., Isolation and identification of Pseudomonas spp., from Schirmacher oasis, Antarctica, Applied and Environmental Microbiology, 55, pp. 767-770, (1989)
  • [26] VINCENT W.F., HOWARD-WILLIAMS C., Microbial communities in southern VictoriaLand streams (Antarctica) II. The effects of low temperature, Hydrobiologia, 172, pp. 39-49, (1989)
  • [27] VISHNIAC H.S., HEMPFLING W.P., Evidence of an indigenous microbiota (yeast) in the Dry Valleys of Antarctica, Journal of General Microbiology, 112, pp. 301-314, (1979)
  • [28] WALTON D.W.H., Colonization of terrestrial habitats - organisms, opportunities and occurrence, Antarctic Ecosystems. Proceedings of the 5th SCAR Biology Symposium, pp. 51-60, (1990)
  • [29] WEBB P.N., HARWOOD D.M., Terrestrial flora of the Sirius Formation: its significance for late cenozoic glacial history., Antarctic Journal of the United States, 21, pp. 7-11, (1987)