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Int J Syst Evol Microbiol 57 (2007), 2489-2492; DOI  10.1099/ijs.0.64926-0
© 2007 International Union of Microbiological Societies

Amphibacillus sediminis sp. nov., an endospore-forming bacterium isolated from lake sediment in Japan

Sun-Young An1, Shu Ishikawa2, Hiroaki Kasai2, Keiichi Goto3 and Akira Yokota1

1 Institute of Molecular and Cellular Biosciences, The University of Tokyo, Yayoi, 1-1-1, Bunkyo-Ku, Tokyo 113-0032, Japan
2 Marine Biotechnology Institute Co. Ltd, 3-75-1, Heita, Kamaishi, Iwate 026-0001, Japan
3 Microbiological and Analytical Group, Food Research Laboratories, Mitsui Norin Co. Ltd, 223-1, Miyahara, Fujieda, Shizuoka 426-0133, Japan

Correspondence
Sun-Young An
an12su{at}hotmail.com

A facultatively anaerobic, moderately alkaliphilic, Gram-positive, spore-forming and rod-shaped bacterial strain, Shu-P-Ggiii25-2T, was isolated from lake sediment in Shizuoka, Japan, and was characterized taxonomically using a polyphasic approach. Analysis of the 16S rRNA gene sequence indicated that the novel isolate clustered with the type strain of Amphibacillus xylanus and it exhibited sequence similarities of 94.9–95.6 % to the type strains of species of the genus Amphibacillus. Isoprenoid quinones and oxidase and catalase activities were not detected for strain Shu-P-Ggiii25-2T. The DNA G+C content was 42.3 mol%, the cell-wall peptidoglycan contained meso-diaminopimelic acid as the diagnostic diamino acid and the major cellular fatty acids were iso-C14 : 0, iso-C15 : 0, anteiso-C15 : 0, C16 : 0 and iso-C16 : 0. On the basis of phylogenetic position and phenotypic properties, strain Shu-P-Ggiii25-2T represents a novel species of the genus Amphibacillus, for which the name Amphibacillus sediminis sp. nov. is proposed. The type strain is Shu-P-Ggiii25-2T (=MBIC08269T=IAM 15428T=KCTC 13120T). An emended description of the genus Amphibacillus is also given.

Abbreviations: BTB, bromothymol blue

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain Shu-P-Ggiii25-2T is AB243866.






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