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1 Instituto de Recursos Naturales y Agrobiologia, CSIC, Apartado 1052, E-41080 Sevilla, Spain
2 Research group on Bacterial Opportunistic Pathogens and Environment, Université de Lyon, F-69003 Lyon, France
3 Université Lyon 1 and CNRS, UMR 5557, Ecologie Microbienne, F-69622 Villeurbanne, France
4 Institut des Sciences Pharmaceutiques et Biologiques and Observatoire Français des Nocardioses, F-69373 Lyon, France
5 Deutsche Sammlung von Mikroorganismen und Zellkulturen, D-38124 Braunschweig, Germany
Correspondence
Verónica Rodríguez-Nava
veronica.rodriguez{at}sante.univ-lyon1.fr
A novel actinomycete strain, OFN S17T, was isolated from a sample collected from Altamira Cave, Cantabria, Spain. This strain was identified by using a polyphasic taxonomic approach. The 16S rRNA, hsp65 and sod gene sequences of the strain were determined and compared with those of representative Nocardia species. The results showed that strain OFN S17T should be assigned to the genus Nocardia. Phylogenetic analysis indicated that strain OFN S17T was most closely related to the type strain of Nocardia tenerifensis (98.6, 96.2 and 96 % similarity, respectively, for the 16S rRNA, hsp65 and sod gene sequences). The DNA G+C content was 64.4 mol%. DNA–DNA hybridization analyses revealed 29 % relative reassociation between the DNA of strain OFN S17T and N. tenerifensis DSM 44704T. The phenotypic and genotypic data show that strain OFN S17T merits recognition as a representative of a novel species of the genus Nocardia, for which the name Nocardia altamirensis sp. nov. is proposed. The type strain is OFN S17T (=CIP 109606T =DSM 44997T).
Neighbour-joining trees based on sequences of the 16S rRNA (with an extended set of reference sequences), hsp65 and sod genes are available as supplementary material with the online version of this paper.
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