Differentiation of Ectothiorhodospiraceae based on their fatty acid composition

Thiemann, B. and Imhoff, Johannes F. (1996) Differentiation of Ectothiorhodospiraceae based on their fatty acid composition Systematic and Applied Microbiology, 19 (2). pp. 223-230. DOI 10.1016/S0723-2020(96)80048-8.

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The fatty acid composition of 27 strains from 7 described Ectothiorhodospira species, including all type strains, were analyzed and compared using the “Microbial Identification System”. According to their ability to grow in media with 15% total salts and more or to require much lower salt concentrations the comparison of the strains was made in two different groups. The strains grown in the established standard medium for Ectothiorhodospira species at 15% and 25% (w/v) salinity formed four major clusters. Two of these enclosed strains of E. halophila, the others E. abdelmalekii (one strain) and E. halochloris (3 strains), respectively. Those strains with salt optima significantly below 10% (w/v) salinity formed three major clusters. The first included strains of E. mobilis and E. marismortui. The second cluster contained strains of E. shaposhnikovii, E. vacuolata and one strain that had been tentatively identified as E. mobilis but should be considered as a strain of E. shaposhnikovii. The third group contained strains that were assigned to E. mobilis but should be regarded as a separate and new species. The observed similarities support and extend patterns of relationships obtained by other taxonomic investigations on the basis of a smaller number of strains.

Document Type: Article
Keywords: Ectothiorhodospira; Phototrophic purple bacteria; Fatty acids; Taxonomy; Microbial identification
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-MI Marine Microbiology
Refereed: Yes
DOI etc.: 10.1016/S0723-2020(96)80048-8
ISSN: 0723-2020
Date Deposited: 18 Feb 2008 17:23
Last Modified: 17 Jun 2016 09:50
URI: http://eprints.uni-kiel.de/id/eprint/20

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