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          Institute: MPI für marine Mikrobiologie     Collection: Abteilung Mikrobiologie     Display Documents

ID: 13835.0, MPI für marine Mikrobiologie / Abteilung Mikrobiologie
Thiobaca trueperi gen. nov., sp nov., a phototrophic purple sulfur bacterium isolated from freshwater lake sediment
Authors:Rees, G. N.; Harfoot, C. G.; Janssen, P. H.; Schoenborn, L.; Kuever, J.; Lunsdorf, H.
Date of Publication (YYYY-MM-DD):2002-03
Title of Journal:International Journal of Systematic and Evolutionary Microbiology
Journal Abbrev.:Int. J. Syst. Evol. Microbiol.
Start Page:671
End Page:678
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:Two strains of a novel species of phototrophic micro-organism were isolated from the sediments of a shallow, freshwater, eutrophic lake. Both strains grew photolithoheterotrophically with sulfide as an electron donor, transiently accumulating intracellular sulfur globules. Photolithoautotrophic growth was not observed. One strain was designated BCHT (the type strain) and was studied in most detail. Cells contained bacteriochlorophyll a, and the dominant carotenoid was lycopene. Cell suspensions were brown. The photosynthetic membranes had a vesicular arrangement. Acetate, propionate, pyruvate, succinate and fumarate were each used as electron donors and carbon sources in the presence of sulfide and bicarbonate. In the presence of light, growth did not occur with hydrogen, thiosulfate or iron(II). The optimum temperature for growth was between 25 and 30 degreesC, the maximum being 36 degreesC. The G+C content of the genomic DNA of strain BCHT was 63 mol %. Analysis of the 16S RNA genes showed that both strains belonged to the gamma-subclass of the Proteobacteria but were phylogenetically distinct from any described phototrophic organisms within the Chromatiaceae. On the basis of phylogenetic and physiological differences from other phototrophic microorganisms, strain BCHT is described as a novel species of a new genus, Thiobaca trueperi gen. nov., sp. nov.
Free Keywords:Thiobaca trueperi; phototrophic bacteria; freshwater lakes
Comment of the Author/Creator:Date: 2002, MAR
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für marine Mikrobiologie
External Affiliations:Univ Canberra, POB 921, Albury, NSW 2640, Australia; Univ Canberra, Albury, NSW 2640, Australia; Murray Darling Freshwater Res Ctr, CRCFE, Albury, NSW 2640, Australia; Univ Waikato, Dept Biol Sci, Hamilton, New Zealand; Univ Melbourne, Dept Immunol & Microbiol, Parkville, Vic 3010, Australia; Max Planck Inst Marine Microbiol, D-28359 Bremen, Germany; GBF Gessell Biotechnol Forsch MbH, D-38124 Braunschweig, Germany
Identifiers:ISI:000174516900042 [ID No:1]
ISSN:1466-5026 [ID No:2]
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