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The Geochemistry, Ecology and Taxonomy of Antarctic Methanogenic Bacteria
Entry ID: ASAC_264


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Summary
Abstract: The Antarctic methanogen Methanococcoides burtonii contained only diether phospholipids. These membrane components were analysed by gas chromatography and gas chromatography mass spectrometry. Of particular interest was the occurrence of unsaturated diether lipids in M. burtonii; unsaturated ether lipids accounted for 57% of the diether phospholipids. To our knowledge, unsaturated ether lipids have not been previously reported in a methanogen. The presence of the unsaturated ether lipids in M. burtonii is probably the result of temperature adaptation by the bacterium. it may be possible to use these components as a chemical signature for methanogens in Antarctic and Southern Ocean environments.

From the abstract of one of the papers:

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.

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Geographic Coverage
 N: -68.0 S: -68.5  E: 72.5  W: 72.0

Temporal Coverage
Start Date: 1987-09-30
Stop Date: 1988-03-31


Location Keywords
CONTINENT > ANTARCTICA > Vestfold Hills
GEOGRAPHIC REGION > POLAR


Science Keywords
BIOLOGICAL CLASSIFICATION >BACTERIA/ARCHAEA    [Definition]
BIOSPHERE >AQUATIC ECOSYSTEMS >LAKES    [Definition]


ISO Topic Category
BIOTA


Quality
Values provided in temporal coverage are approximate only.


Access Constraints
Some of the papers arising from this project are available for download from the provided URL to AAD staff only.


Use Constraints
This data set conforms to the PICCCBY Attribution License
(http://creativecommons.org/licenses/by/3.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_264 when using these data.


Keywords
16S RRNA
ACE LAKE
ANTARCTIC PROKARYOTES
BACTERIA
BIODIVERSITY
METHANOGENIC
PHYLOGENY
PSYCHROTROPHS


Data Set Progress
COMPLETE


Data Center
Australian Antarctic Data Centre, Australia    [Information]
Data Center URL: http://data.aad.gov.au

Data Center Personnel
Name: DATA OFFICER AADC
Phone: +61 3 6232 3244
Fax: +61 3 6232 3351
Email: metadata at aad.gov.au
Contact Address:
Australian Antarctic Division
203 Channel Highway
City: Kingston
Province or State: Tasmania
Postal Code: 7050
Country: Australia



Distribution
Distribution_Media: HTTP
Distribution_Size: 9491 kb
Distribution_Format: pdf
Fees: Free


Personnel
PETER FRANZMANN
Role: INVESTIGATOR
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Phone: +61 8 9333 6306
Fax: +61 8 9387 8211
Email: peter.franzmann at csiro.au
Contact Address:
CSIRO LAND AND WATER
PO WEMBLEY
PRIVATE BAG
City: Wembley
Province or State: Western Australia
Postal Code: 6014
Country: Australia


Publications/References
Summons, R.E., Franzmann, P.D., Nichols, P.D. (1998), Carbon isotopic fractionation associated with methylotrophic methanogens., Organic Geochemistry, 28, 465-475

Franzmann, P.D., Liu, Y., Balkwill, D.L., Conway de Macario, E., Boone, D.R. (1997), Methanogenium frigidus sp. nov., a psychrophilic H2-using methanogen from Ace Lake, Antarctica., International Journal of Systematic Bacteriology, 47, 1068-1072

Franzmann, P.D., Dobson, S.J. (1993), The phylogeny of bacteria from a modern Antarctic refuge., Antarctic Science, 5, 267-270

Spielmeyer, W., McMeekin, T.A., Miller, J., Franzmann, P.D. (1993), Phylogeny of the Antarctic bacterium, Carnobacterium alterfunditum., Polar Biology, 13, 501-503

Nichols, P.D., Shaw, P.M., Mancuso, C.A., Franzmann, P.D. (1993), Analysis of archaeal di- and tetra phospholipids by high temperature capillary gas chromatography., Journal of Microbiological Methods, 18, 1-9

Nichols, P.D., Franzmann, P.D. (1992), Unsaturated diether phospholipids in the antarctic methanogen Methanococcoides burtonii., FEMS Microbiology Letters, 98, 205-208

Franzmann, P.D., Springer, N., Ludwig, W., Conway de Macario, E., and Rohde, M. (1992), A methanogenic archaeon from Ace Lake, Antarctica: Methanococcoides burtonii sp. nov., Systematic and Applied Microbiology, 15, 573-581

Franzmann, P.D. and M. Rohde. (1991), An obligately anaerobic, coiled bacterium from Ace Lake, Antarctica., Journal of General Microbiology, 137, 2191-2196

Mancuso, C.A., Franzmann, P.D., Burton, H.R., and P.D. Nichols. (1990), Microbial community structure and biomass of an antarctic methanogenic lake ecosystem as determined by phosopholipid analysis., Microbial Ecology, 19, 73-95

Franzmann, P.D., Roberts, N.J., Mancuso, C.A., Burton, H.R., and T.A. McMeekin. (1991), Methane production in meromictic Ace Lake, Antarctica., Hydrobiologia, 210, 191-201

Franzmann, P.D., Höpfl, P., Weiss, N., and B.J. Tindall. (1991), Psychrotrophic, lactic acid-producing bacteria from anoxic waters in Ace Lake, Antarctica; Carnobacterium funditum sp. nov. and Carnobacterium alterfunditum sp. nov., Archives of Microbiology, 156, 255-262

Creation and Review Dates
DIF Creation Date: 2000-07-20
Last DIF Revision Date: 2014-01-10


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