Taxonomic analysis of a group of strains of bacteriochlorophyll b-containing purple bacteria of the genus Blastochloris

Kompantseva, E .I., Panteleeva, E. E., Lysenko, A. M., Imhoff, Johannes F., Thiemann, B. and Mityushina, L. L. (1998) Taxonomic analysis of a group of strains of bacteriochlorophyll b-containing purple bacteria of the genus Blastochloris Microbiologiya, 67 (3). pp. 391-398.

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Abstract

The phylogenetic and phenotypic structure of a group of bacteriochlorophyll b-containing purple bacteria of the genus Blastochloris was studied to determine the taxonomic status of these bacteria. The group included the type strains of B. viridis and B. sulfoviridis and eight Blastochloris strains isolated from different water bodies. By DNA-DNA hybridization carried out by the optical method, three phylogenetic clusters were identified within the group studied the corresponded to three genospecies related at a DNA homology level of 30-50%. Two of these genospecies were represented by the type strains of B. viridis and B. sulfoviridis and by three new isolates each; the third genospecies included two new isolates, KR-70sv and KR-101sv. Comparative analysis of the fatty acid composition of four strains gave the same clusters as those yielded by DNA hybridization. Morphological and physiological investigation confirmed that strains phylogenetically close to B. viridis and B. sulfoviridis indeed belonged to these species. However, strains KR-70sv and KR-101sv, constituting a separate genospecies, showed no significant phenotypic distinctions from B. sulfoviridis and were assigned to this species. Thus, out of eight new isolates, three were referred to B. viridis and five to B. sulfoviridis. The latter strains are phenotypically similar but phylogenetically divergent.

Document Type: Article
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-MI Marine Microbiology
Refereed: No
Date Deposited: 18 Feb 2008 17:24
Last Modified: 22 Mar 2017 12:52
URI: http://eprints.uni-kiel.de/id/eprint/5487

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