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Int J Syst Evol Microbiol 59 (2009), 761-765; DOI  10.1099/ijs.0.65837-0
© 2009 International Union of Microbiological Societies

Azospirillum picis sp. nov., isolated from discarded tar

S.-Y. Lin1, C. C. Young1, H. Hupfer2, C. Siering2, A. B. Arun1, W.-M. Chen3, W.-A. Lai1, F.-T. Shen1, P. D. Rekha1 and A. F. Yassin4

1 College of Agriculture and Natural Resources, Department of Soil & Environmental Sciences, National Chung Hsing University, Taichung 402, Taiwan, ROC
2 Kekulé-Institut für Organische Chemie und Biochemie der Universität Bonn, 53121 Bonn, Germany
3 Laboratory of Microbiology, Department of Seafood Science, National Kaohsiung Institute of Marine Technology, Nan-Tzu, Kaohsiung 811, Taiwan, ROC
4 Institut für Medizinische Mikrobiologie und Immunologie der Universität Bonn, 53127 Bonn, Germany

Correspondence
A. F. Yassin
yassin{at}mibi03.meb.uni-bonn.de

A polyphasic taxonomic study was performed on a pink-coloured unknown bacterium isolated from discarded road tar. Comparative analysis of the 16S rRNA gene sequence demonstrated that the isolate belongs phylogenetically to the genus Azospirillum with Azospirillum lipoferum, A. melinis and A. rugosum as its closest phylogenetic relatives (96.7, 96.6 and 96.6 % similarity to the respective type strains). The generic assignment was confirmed on the basis of chemotaxonomic data, which revealed a fatty acid profile characteristic for the genus Azospirillum, consisting of straight-chain saturated and unsaturated fatty acids, with C18 : 1{omega}7c as the major unsaturated non-hydroxylated fatty acid, and C16 : 0 3-OH as the major hydroxylated fatty acid, and a ubiquinone with ten isoprene units (Q-10) as the predominant respiratory quinone. On the basis of both the phenotypic and molecular genetic evidence, it is proposed that the unknown isolate should be classified within a novel species of the genus Azospirillum, for which the name Azospirillum picis sp. nov. is proposed. The type strain is IMMIB TAR-3T (=CCUG 55431T =DSM 19922T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain IMMIB TAR-3T is AM922283.

Cellular fatty acid profiles of strain IMMIB TAR-3T and the type strains of some Azospirillum species are available as supplementary material with the online version of this paper.






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