Nisaea denitrificans gen. nov., sp. nov. and Nisaea nitritireducens sp. nov., two novel members of the class Alphaproteobacteria from the Mediterranean Sea

Abstract : Two novel Gram-negative bacteria, designated strains DR41_21(T) and DR41_18(T), were isolated from coastal, surface waters of the north-western Mediterranean Sea. The cells were motile, pleomorphic rods, 2.9 microm long and 0.9 microm 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 Alphaproteobacteria within the family Rhodospirillaceae. The 16S rRNA gene sequence similarity of the two strains was 98.8 % but DNA-DNA hybridization indicated only 55 % relatedness. Strain DR41_21(T) was able to denitrify and possessed nirK and nosZ genes, unlike strain DR41_18(T), which possessed only nirK. These isolates represent two novel species of a new genus, Nisaea gen. nov., for which the names Nisaea denitrificans sp. nov. and Nisaea nitritireducens sp. nov. are proposed. The type strain of Nisaea denitrificans is DR41_21(T) (=DSM 18348(T)=CIP 109265(T)=OOB 129(T)) and the type strain of Nisaea nitritireducens is DR41_18(T) (=DSM 19540(T)=CIP 109601(T)=OOB 128(T)).
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International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, 2008, 58 (Pt 10), pp.2336-2341. 〈10.1099/ijs.0.64592-0〉
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http://hal.univ-brest.fr/hal-00617742
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Soumis le : mardi 30 août 2011 - 14:20:05
Dernière modification le : vendredi 22 juin 2018 - 13:40:04

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Laurent Urios, Valérie Michotey, Laurent Intertaglia, Françoise Lesongeur, Philippe Lebaron. Nisaea denitrificans gen. nov., sp. nov. and Nisaea nitritireducens sp. nov., two novel members of the class Alphaproteobacteria from the Mediterranean Sea. International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, 2008, 58 (Pt 10), pp.2336-2341. 〈10.1099/ijs.0.64592-0〉. 〈hal-00617742〉

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