Section 10
Chapter 9,193

Phylogenetic diversity of phototrophic purple non-sulfur bacteria in the proteobacteria alpha group

Kawasaki, H.; Hoshino, Y.; Yamasato, K.

FEMS (Federation of European Microbiological Societies) Microbiology Letters 112(1): 61-66


Accession: 009192878

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The phylogenetic structure of non-sulfur purple bacteria in the Proteobacteria a group was elucidated by the comparative analysis of 16S rRNA sequences from 29 strains of phototrophs and 14 strains of related non-phototrophs. The sequences of 12 strains including 7 isolates were determined in this study. The phototrophs in the a group were found to be extremely diversified and intermingled with non-phototrophs. Rhodopseudomonas species were dispersed into 3 lines of descent and Rhodospirillum species were dispersed into 5 lines. Marine organisms were composed of 4 lineages which were independent of each other and of freshwater lineages. Rhodospirillum fulvum, Rhodospirillum molischianum and the genus Magnetospirillum were found to be monophyletic.

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