期刊
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
卷 61, 期 -, 页码 2832-2836出版社
MICROBIOLOGY SOC
DOI: 10.1099/ijs.0.028043-0
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- Council of Scientific and Industrial Research (CSIR)
- Department of Biotechnology, Government of India
- CSIR network [NWP006]
A Gram-positive, yellow-pigmented, actinobacterial strain, DW152(T), was isolated from a dairy industry effluent treatment plant. 16S rRNA gene sequence analysis indicated that strain DW152(T) exhibited low similarity with many species with validly published names belonging to the genera Micrococcus and Arthrobacter. However, phenotypic properties including chemotaxonomic markers affiliated strain DW152(T) to the genus Micrococcus. Strain DW152(T) had ai-C-15:0 and i-C-15:0 as major cellular fatty acids, and MK-8(H-2) as the major menaquinone. The cell-wall peptidoglycan of strain DW152(T) had L-lysine as the diagnostic amino acid and the type was A4 alpha. The DNA G+C content of strain DW152(T) was 68.0 mol%. In 16S rRNA gene sequence analysis, strain DW152(T) exhibited significant similarity with Micrococcus terreus NBRC 104258(T), but the mean value of DNA DNA relatedness between these strains was only 42.3%. Moreover, strain DW152(T) differed in biochemical and chemotaxonomic characteristics from M. terreus and other species of the genus Micrococcus. Based on the above differences, we conclude that strain DW152(T) should be treated as a novel species of the genus Micrococcus, for which the name Micrococcus lactis sp. nov. is proposed. The type strain of Micrococcus lactis sp. nov. is DW152(T) (=MTCC10523(T) =DSM 23694(T)).
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