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Int J Syst Evol Microbiol 57 (2007), 2908-2911; DOI  10.1099/ijs.0.65232-0
© 2007 International Union of Microbiological Societies

Ureibacillus composti sp. nov. and Ureibacillus thermophilus sp. nov., isolated from livestock-manure composts

Hang-Yeon Weon1, Seon-Young Lee2, Byung-Yong Kim2, Hyung-Jun Noh1, Peter Schumann3, Jong-Shik Kim4 and Soon-Wo Kwon2

1 Applied Microbiology Division, National Institute of Agricultural Science and Technology, Rural Development Administration (RDA), Suwon 441-707, Republic of Korea
2 Korean Agricultural Culture Collection (KACC), Microbial Genetics Division, National Institute of Agricultural Biotechnology, Rural Development Administration (RDA), Suwon 441-707, Republic of Korea
3 DSMZ – Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstraße 7b, 38124 Braunschweig, Germany
4 Department of Environmental Sciences, University of California, Riverside, CA 92521-0424, USA

Correspondence
Soon-Wo Kwon
swkwon{at}rda.go.kr

Two Gram-negative, rod-shaped, thermophilic bacterial strains, HC145T and HC148T, were isolated from a compost sample from a compost facility in Ichon, Korea. Sequencing of the 16S rRNA genes of HC145T and HC148T and comparative analyses of the resulting sequences clearly showed that these strains had a phylogenetic affiliation to the genus Ureibacillus. The level of 16S rRNA similarity between the two novel strains was 98.4 % and the levels of sequence similarity between them and existing Ureibacillus species were 97.8–98.1 (HC145T) and 97.4–98.7 % (HC148T). The DNA–DNA reassociation values between the two strains and the type strains of Ureibacillus species ranged from 38 to 51 %. The polar lipid profiles for both isolates consisted of phosphatidylglycerol, diphosphatidylglycerol, phospholipids and glycolipids of unknown composition. The major quinones were MK-8, MK-9 and MK-7, the peptidoglycan type was L-Lys<-D-Asp and the main cellular fatty acid was iso-C16 : 0. The DNA G+C contents of strains HC145T and HC148T were 42.4 and 38.5 mol%, respectively. On the basis of the data from this polyphasic study, strains HC145T and HC148T represent members of the genus Ureibacillus, for which the names Ureibacillus composti sp. nov. and Ureibacillus thermophilus sp. nov., respectively, are proposed. The type strain of U. composti is HC145T (=KACC 11361T =DSM 17951T) and the type strain of U. thermophilus is HC148T (=KACC 11362T =DSM 17952T).

The GenBank/EMBL/DDBJ accession numbers for the 16S rRNA gene sequences of strain HC145T and strain HC148T are DQ348071 and DQ348072, respectively.






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Copyright © 2007 by the International Union of Microbiological Societies.