A Gram-negative, rod-shaped, yellow-pigmented bacterium, designated strain R2A-7, was isolated from sediment of the eutrophic Taihu Lake in Jiangsu Province, China. The isolate was subjected to a taxonomic study using a polyphasic approach. Phylogenetic analysis based on the 16S rRNA gene sequences placed strain R2A-7 within the genus in the family . The highest sequence similarity was found with (98.3 %), followed by other species with similarities <96.0 %. The major fatty acids (>5 %) were 15 : 0 iso, 17 : 1 iso 9, 17 : 0 iso 3-OH, 15 : 1 iso G and 15 : 0 iso 3-OH. The G+C content of the genomic DNA of strain R2A-7 was 37.7 mol%. The DNA–DNA relatedness value with CGMCC 1.3801 was 40.6 %. Molecular and phenotypic data suggest that strain R2A-7 represents a novel species within the genus , for which the name is proposed. The type strain is R2A-7 (=CGMCC 1.7270=NBRC 104929).


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vol. , part 11, pp. 2666 - 2669

Maximum-parsimony and minimum-evolution phylogenetic trees based on 16S rRNA gene sequences. [PDF](19 KB)


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