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Int J Syst Evol Microbiol 57 (2007), 1065-1068; DOI  10.1099/ijs.0.64893-0
© 2007 International Union of Microbiological Societies

Gordonia malaquae sp. nov., isolated from sludge of a wastewater treatment plant

A. F. Yassin1, Fo-Ting Shen2, H. Hupfer3, A. B. Arun2, Wei-An Lai2, P. D. Rekha2 and Chiu Chung Young2

1 Institut für Medizinische Mikrobiologie und Immunologie der Universität Bonn, 53127 Bonn, Germany
2 College of Agriculture and Natural Resources, Department of Soil and Environmental Sciences, National Chung Hsing University, Taichung 402, Taiwan ROC
3 Kekulé-Institut für Organische Chemie und Biochemie der Universität Bonn, 53121 Bonn, Germany

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

The taxonomic status of a bacterial isolate from the sludge of a wastewater treatment plant was characterized by using a polyphasic taxonomic approach. Chemotaxonomic investigations revealed the presence of cell-wall chemotype IV, short-chain mycolic acids that co-migrated with those extracted from members of the genus Gordonia, fatty acids C16 : 0 and C18 : 0 (found by pyrolysis gas chromatography) and a dihydrogenated menaquinone with nine isoprene units [MK-9(H2)] as the predominant menaquinone. The genus assignment was confirmed by 16S rRNA gene sequencing. Comparative analysis of the 16S rRNA gene sequence showed that the novel isolate constitutes a hitherto unknown subline within the genus Gordonia, displaying 95.9 to 97.6 % gene sequence similarity to the recognized species of the genus. The novel isolate was distinguished from the type strains of phylogenetically related species by using a set of phenotypic features. The genotypic and phenotypic data show that the new strain merits classification as a novel species of the genus Gordonia, for which the name Gordonia malaquae sp. nov. is proposed. The type strain is IMMIB WWCC-22T (=DSM 45064T=CCUG 53555T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain IMMIB WWCC-22T is AM406674.






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Copyright © 2007 by the International Union of Microbiological Societies.