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Int J Syst Evol Microbiol 57 (2007), 1081-1085; DOI  10.1099/ijs.0.64830-0
© 2007 International Union of Microbiological Societies

Halalkalibacillus halophilus gen. nov., sp. nov., a novel moderately halophilic and alkaliphilic bacterium isolated from a non-saline soil sample in Japan

Akinobu Echigo1,2, Tadamasa Fukushima1,2, Toru Mizuki1,2, Masahiro Kamekura3 and Ron Usami1,2

1 Department of Applied Chemistry, Faculty of Engineering, Toyo University, 2100 Kujirai, Kawagoe, Saitama 350-8585, Japan
2 Bio-Nano Electronics Research Centre, Toyo University, 2100 Kujirai, Kawagoe, Saitama 350-8585, Japan
3 Noda Institute for Scientific Research, 399 Noda, Noda, Chiba 278-0037, Japan

Correspondence
Akinobu Echigo
dc0400017{at}toyonet.toyo.ac.jp

A moderately halophilic and alkaliphilic bacterium, designated strain BH2T, was isolated from non-saline garden soil in Saitama, Japan. Cells of strain BH2T were motile, aerobic, rod-shaped and Gram-positive and contained A1{gamma}, meso-diaminopimelic acid-type murein. Growth occurred in 5.0–25 % (w/v) NaCl (optimum, 10–15 %, w/v), at pH 5.5–10.0 (optimum, pH 8.5–9.0) and at 20–40 °C. The predominant isoprenoid quinone was menaquinone-7. The major cellular fatty acids were ai-C15 : 0, i-C16 : 0, ai-C17 : 0 and i-C15 : 0. The G+C content of the total DNA of strain BH2T was 35.1±0.4 mol% (±SD; n=5). The phylogenetic distance from species with validly published names was less than 94.1 %. The phylogenetic and phenotypic characteristics indicated that strain BH2T represents a novel genus and species, for which the name Halalkalibacillus halophilus gen. nov., sp. nov. is proposed. The type strain is BH2T (=JCM 14192T=DSM 18494T).

Abbreviations: m-Dpm, meso-diaminopimelic acid

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain BH2T is AB264529.

An alignment of 16S rRNA gene sequences of members of the family Bacillaceae and a phylogenetic tree reconstructed from the alignment and signature bases of the genera Alkalibacillus, Filobacillus, Tenuibacillus and strain BH2T are available as supplementary material in IJSEM Online.






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