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Acetobacter oeni sp. nov., isolated from spoiled red wine

¹ Departamento de Microbiología y Génetica, Universidad de Salamanca, Lab. 209, Edificio Departamental de Biología, Campus M. Unamuno, 37007 Salamanca, Spain
² Departamento das Industrias Agro-Alimentares, Escola Superior Agrária de Viseu, Portugal
³ BCCM/LMG Bacteria Collection, Laboratory of Microbiology, Ghent University, Belgium
⁴ Faculty of Sciences, Laboratory of Microbiology, Ghent University, Belgium

Correspondence
Encarna Velázquez
evp{at}gugu.usal.es

A bacterial strain, designated B13^T, was isolated from spoiled red wine from the Dão region, Portugal. The strain was Gram-negative, strictly aerobic, rod-shaped and motile. Phylogenetic analysis on the basis of 16S rRNA gene sequences indicated that B13^T belonged to the genus Acetobacter within the Alphaproteobacteria. The closest related species was Acetobacter aceti, with 98·4 % 16S rRNA gene sequence similarity. DNA–DNA hybridization showed that B13^T constituted a taxon separate from the Acetobacter species with validly published names. The DNA G+C content of B13^T was 58·1 mol%. Phenotypic characteristics of B13^T allowed its differentiation from the recognized Acetobacter species. B13^T produced 5-ketogluconic acid from glucose, but no 2-ketogluconic acid. It produced catalase, but no oxidase. It utilized glycerol, but not maltose, ethanol or methanol as carbon sources. On the basis of the results obtained, B13^T represents a novel species for which the name Acetobacter oeni sp. nov. is proposed. The type strain is B13^T (=LMG 21952^T=CECT 5830^T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of Acetobacter oeni sp. nov. B13^T is AY829472.

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