1887

Abstract

Two novel Gram-negative bacteria, designated strains DR41_21 and DR41_18, were isolated from coastal, surface waters of the north-western Mediterranean Sea. The cells were motile, pleomorphic rods, 2.9 μm long and 0.9 μm wide and formed cream colonies on marine agar medium. The G+C content of the genomic DNA was 60 mol%. Phylogenetic analysis of 16S rRNA gene sequences positioned the isolates in the class within the family . The 16S rRNA gene sequence similarity of the two strains was 98.8 % but DNA–DNA hybridization indicated only 55 % relatedness. Strain DR41_21 was able to denitrify and possessed and genes, unlike strain DR41_18, which possessed only . These isolates represent two novel species of a new genus, gen. nov., for which the names sp. nov. and sp. nov. are proposed. The type strain of is DR41_21 (=DSM 18348=CIP 109265=OOB 129) and the type strain of is DR41_18 (=DSM 19540=CIP 109601=OOB 128).

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2008-10-01
2019-10-17
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vol. , part 10, pp. 2336 - 2341

Electron micrograph of a negatively stained cell of strain DR41_21 harvested during the exponential phase.

Effects of temperature, pH and NaCl concentration on the growth of strain DR41_21 .

Fatty acid composition analysis for strains DR41_18 and DR41_21 .

Analysis of polar lipids for strains DR41_18 and DR41_21 .

Phylogenetic analysis of sequences of strains DR41_21 and DR41_18 .

Phylogenetic analysis of the sequence of strain DR41_21 .

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