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Int J Syst Evol Microbiol 57 (2007), 1183-1187; DOI  10.1099/ijs.0.64813-0
© 2007 International Union of Microbiological Societies

Nocardia acidivorans sp. nov., isolated from soil of the island of Stromboli

Peter Kämpfer1, Birgit Huber2, Sandra Buczolits2, Kathrin Thummes1, Iris Grün-Wollny3 and Hans-Jürgen Busse2

1 Institut für Angewandte Mikrobiologie, Justus-Liebig-Universität Giessen, D-35392 Giessen, Germany
2 Institut für Bakteriologie, Mykologie und Hygiene, Veterinärmedizinische Universität, A-1210 Wien, Austria
3 Labor Grün-Wollny, D-35394 Giessen, Germany

Correspondence
Peter Kämpfer
peter.kaempfer{at}agrar.uni-giessen.de

A Gram-positive, non-spore-forming bacterium (strain GW4-1778T) was isolated from soil of the Italian island of Stromboli. 16S rRNA gene sequence similarity studies showed that strain GW4-1778T is a member of the genus Nocardia, most closely related to Nocardia pseudobrasiliensis (GenBank accession no. DQ659914; 98.6 %), Nocardia nova (Z36930; 98.6 %), Nocardia niigatensis (AB092563; 98.4 %), Nocardia jiangxiensis (AY639902; 98.0 %), Nocardia uniformis (Z46752; 98.0 %) and Nocardia miyunensis (AY639901; 97.8 %). Strain GW4-1778T could be distinguished from any other established Nocardia species by sequence similarity values of less than 97.5 %. Strain GW4-1778T exhibited a quinone system with the predominant compound MK-8 (H4, {omega}-cycl) (99.5 %) and traces of MK-8 (H4), characteristic for the genus Nocardia. The polar lipid profile of strain GW4-1778T consisted of the predominant compound diphosphatidylglycerol, moderate amounts of phosphatidylethanolamine, phosphatidylinositol, two phosphatidylinositol mannosides, a unknown polar lipid and trace amounts of two unknown lipids and the major fatty acids were C15 : 0, C16 : 0, C17 : 1{omega}8c and 10-methyl C17 : 0. The results of DNA–DNA hybridizations and physiological and biochemical tests allowed genotypic and phenotypic differentiation of strain GW4-1778T from related species with 16S rRNA gene similarities of >97.5 %. Therefore, strain GW4-1778T merits species status, for which the name Nocardia acidivorans sp. nov. is proposed, with the type strain GW4-1778T (=CCUG 53410T=CIP 109315T=DSM 45049T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain GW4-1778T is AM402972.

An extended neighbour-joining tree based on 16S rRNA gene sequences showing the positions of strain GW4-1778T and other Nocardia species is available as supplementary material with the online version of this paper.






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