Desulfatibacillum aliphaticivorans gen. nov., sp. nov., an n-alkane- and n-alkene-degrading, sulfate-reducing bacterium

Author:

Cravo-Laureau Cristiana1,Matheron Robert1,Cayol Jean-Luc2,Joulian Catherine2,Hirschler-Réa Agnès1

Affiliation:

1. Laboratoire de Microbiologie, IMEP CNRS UMR 6116, Faculté des Sciences et Techniques de Saint-Jérôme, case 452, 13397 Marseille cedex 20, France

2. Laboratoire de Microbiologie IRD, IFR-BAIM case 925, Universités de Provence et de la Méditerranée, 163 avenue de Luminy, 13288 Marseille cedex 9, France

Abstract

A novel marine sulfate-reducing bacterium, strain CV2803T, which is able to oxidize aliphatic hydrocarbons, was isolated from a hydrocarbon-polluted marine sediment (Gulf of Fos, France). The cells were rod-shaped and slightly curved, measuring 0·6×2·2–5·5 μm. Strain CV2803Tstained Gram-negative and was non-motile and non-spore-forming. Optimum growth occurred in the presence of 24 g NaCl l−1, at pH 7·5 and at a temperature between 28 and 35 °C. Strain CV2803Toxidized alkanes (from C13to C18) and alkenes (from C7to C23). The DNA G+C content was 41·4 mol%. Comparative sequence analyses of the 16S rRNA gene and dissimilatory sulfite reductase (dsrAB) gene and those of other sulfate-reducing bacteria, together with its phenotypic properties, indicated that strain CV2803Twas a member of a distinct cluster that contained unnamed species. Therefore, strain CV2803T(=DSM 15576T=ATCC BAA-743T) is proposed as the type strain of a novel species in a new genus,Desulfatibacillum aliphaticivoransgen. nov., sp. nov.

Publisher

Microbiology Society

Subject

General Medicine,Ecology, Evolution, Behavior and Systematics,Microbiology

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