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

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 BH2^T, was isolated from non-saline garden soil in Saitama, Japan. Cells of strain BH2^T were motile, aerobic, rod-shaped and Gram-positive and contained A1, 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-C_{15 : 0}, i-C_{16 : 0}, ai-C_{17 : 0} and i-C_{15 : 0}. The G+C content of the total DNA of strain BH2^T 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 BH2^T represents a novel genus and species, for which the name Halalkalibacillus halophilus gen. nov., sp. nov. is proposed. The type strain is BH2^T (=JCM 14192^T=DSM 18494^T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain BH2^T 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 BH2^T are available as supplementary material in IJSEM Online.

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