1887

Abstract

Genomic DNA was isolated from the active layer of tundra soil collected from the Kolyma lowland. Northeast Eurasia, near the Arctic Ocean coast. The SSU (small subunit) rRNA genes were amplified with eubacterial primers from the bulk genomic community DNA and cloned into plasmid vectors. Forty-three SSU rDNA clones were obtained, and all of them had different RFLP patterns. Phylogenetic analysis based on partial sequences (about 300 bp) established with the maximum likelihood method revealed the presence of three major and several minor groups that fell into 11 of the established lines of bacteria, and one sequence that could not be assigned to any of the described groups. Most of the clones belonged to the alpha (20.9%) and delta (25.6%) subdivisions of the with lesser proportions in the beta (9.3%) and gamma (4.7%) subdivisions, groups typically isolated from soil by culture methods. Fewer than 12% of the clones belonged to Gram-positive bacteria, and 16% of the clones were related to The majority of the clones (70%) had sequences that were 5-15% different from those in the current databases, and 7% of the clones had sequences that differed by more than 20% from those in the database. The results suggest that these tundra-derived clones are very diverse in phylogeny, and that many probably reflect new genera or families. Hence, most of the tundra soil bacterial community has never been isolated and thus the physiology and function of its dominant members appears to be unknown.

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/content/journal/micro/10.1099/00221287-143-12-3913
1997-12-01
2024-04-19
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References

  1. Borneman J., Skroch P.W., O’Sullivan K.M., Palus J.A., Rumjanek N.G., Jansen J.L., Nienhuis J., Triplett E.W. 1996; Molecular microbial diversity of an agricultural soil in Wisconsin.. Appl Environ Microbiol 62:1935–1943
    [Google Scholar]
  2. Devereux J., Haeberli P., Smithies O. 1984; A comprehensive set of sequence analysis programs for the VAX.. Nucleic Acids Res 12:387–395
    [Google Scholar]
  3. Dunican L.K., Rosswall T. 1974; Taxonomy and physiology of tundra bacteria in a relation to site characteristics.. In Soil Organisms and Decomposition in Tundra pp. 79–92 Holding A.J., Heal O.W., Maclean S.F. Jr Flanagan P.W. Edited by Stockholm: IBP Tundra Biome Steering Committee;
    [Google Scholar]
  4. Felsenstein J. 1989; PHYLIP - Phylogeny inference package (Version 3.2).. Cladistics 5:164–166
    [Google Scholar]
  5. Gray J.P., Herwig R.P. 1996; Phylogenetic analysis of the bacterial communities in marine sediments.. Appl Environ Microbiol 62:4049–4059
    [Google Scholar]
  6. Kimura M. 1980; A simple method for estimating evolutionary rate of base substitutions through comparative studies of nucleotide sequences.. J Mol Evol 16:111–120
    [Google Scholar]
  7. Kwok S., Higuchi R. 1989; Avoiding positives with PCR.. Nature 339:237–238
    [Google Scholar]
  8. Liesack W., Stackebrandt E. 1992; Occurrence of novel groups of the domain Bacteria as revealed by analysis of genetic material isolated from an Australian terrestrial environment.. J Bacteriol 174:5072–5078
    [Google Scholar]
  9. Maidak B.L., Olsen G.J., Larsen N., Overbeek R., McCaughey M.J., Woese C.R. 1997; The RDP (Ribosomal Database Project).. Nucleic Acids Res 25:109–111
    [Google Scholar]
  10. Moyer C.L., Dobbs F.C., Karl D.M. 1994; Estimation of diversity and community structure through restriction fragment length polymorphism distribution analysis of bacterial 16S rRNA genes from a microbial mat at an active, hydrothermal vent system, Loihi Seamount, Hawaii.. Appl Environ Microbiol 60:871–879
    [Google Scholar]
  11. Moyer C.L., Dobbs F.C., Karl D.M. 1995; Phylogenetic diversity of the bacterial community from a microbial mat at an active, hydrothermal vent system, Loihi Seamount, Hawaii.. Appl Environ Microbiol 61:1551–1562
    [Google Scholar]
  12. Stackebrandt E., Liesack W., Goebel B.M. 1993; Bacterial diversity in a soil sample from a subtropical Australian environment as determined by 16S rDNA analysis.. FASEB J 7:232–236
    [Google Scholar]
  13. Ueda T., Suga Y., Matsuguchi T. 1995; Molecular phylogenetic analysis of a soil microbial community in a soybean field.. Eur J Soil Sci 46:415–421
    [Google Scholar]
  14. Weisburg W.W., Barns S.M., Pelletier D.A., Lane D.J. 1991; 16S ribosomal DNA amplification for phylogenetic study.. J Bacteriol 173:697–703
    [Google Scholar]
  15. Zhou J.-Z., Fries M.R., Chee-Sanford J., Tiedje J.M. 1995; Phylogenetic analysis of a new group of denitrifiers capable of anaerobic growth on toluene: description of Azoarcus tolulyticus sp. nov.. Int J Syst Bacteriol 45:500–506
    [Google Scholar]
  16. Zhou J.-Z., Bruns M.A., Tiedje J.M. 1996; DNA recovery from soils of diverse composition.. Appl Environ Microbiol 62:461–468
    [Google Scholar]
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