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Int J Syst Evol Microbiol 59 (2009), 2724-2728; DOI  10.1099/ijs.0.008821-0
© 2009 International Union of Microbiological Societies

Nocardioides humi sp. nov., a β-glucosidase-producing bacterium isolated from soil of a ginseng field

Myung Kyum Kim{dagger}, Sathiyaraj Srinivasan{dagger}, Min-Ju Park, Gayathri Sathiyaraj, Yeon-Ju Kim and Deok-Chun Yang

Korean Ginseng Center and Ginseng Genetic Resource Bank, Kyung Hee University, 1 Seocheon-dong, Giheung-gu Yongin-si, Gyeonggi-do 449-701, South Korea

Correspondence
Deok-Chun Yang
dcyang{at}khu.ac.kr

Strain DCY24T, a Gram-reaction-positive, aerobic, rod-shaped, motile bacterium, was isolated from soil of a ginseng field in South Korea. According to 16S rRNA gene sequence analysis, it was closely related to Nocardioides aromaticivorans DSM 15131T (95.1 % similarity), Nocardioides simplex KCTC 9106T (95.0 %), Nocardioides nitrophenolicus DSM 15529T (94.8 %) and Nocardioides kongjuensis DSM 19082T (94.7 %). Chemotaxonomic data revealed that strain DCY24T possessed MK-8(H4) as the predominant menaquinone, LL-2,6-diaminopimelic acid as the diagnostic diamino acid, phosphatidylglycerol and diphosphatidylglycerol as predominant polar lipids and iso-C16 : 0, iso-C17 : 0 and C18 : 1{omega}9c as predominant fatty acids. The DNA G+C content was 71.0 mol%. Based on evidence from this polyphasic study, strain DCY24T (=KCTC 19265T =LMG 24128T) should be classified as the type strain of a novel Nocardioides species, for which the name Nocardioides humi sp. nov. is proposed.

Abbreviations: TEM, transmission electron microscopy

{dagger}These authors contributed equally to this work.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain DCY24T is EF623863.

Transmission electron micrographs of negatively stained cells of strain DCY24T and fatty acid compositions of strain DCY24T and closely related Nocardioides species are available as supplementary material with the online version of this paper.






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