Halomonas beimenensis sp. nov., isolated from an abandoned saltern.
A Gram-staining negative, motile, non-spore-forming, short rod-shaped (0.8-1.5 × 1.5-2.0 µm), halophilic bacterium, designated strain NTU-107(T), was isolated from brine samples collected from the abandoned Beimen saltern in southern Taiwan. The novel strain grew with 0-15% (w/v) NaCl (optimum between 5% and 10%), at 15-55 °C (optimum 40 °C) and at pH 5.5-9.5 (optimum pH 7.5). The major cellular fatty acids were C(18:1)ω7c, C(16:0) and C(19:0 )cyclo ω8c, the genomic DNA G+C content was 66.5 mol%, and the predominant ubiquinone was Q-9. The major polar lipids included phosphatidylglycerol, diphosphatidylglycerol and phosphatidylethanolamine. In a phylogenetic analysis based on 16S rRNA gene sequences, strain NTU-107(T) clustered with members of the genus Halomonas. In hybridization experiments, however, the levels of DNA-DNA relatedness between strain NTU-107(T) and the type strains of its closest phylogenetic neighbours (Halomonas koreensis, H. organivorans and H. ventosae) were all found to be less than 40 %. Based on the phenotypic, chemotaxonomic and genetic data, strain NTU-107(T) represents a novel species within the genus Halomonas, for which the name Halomonas beimenensis sp. nov. is proposed. The type strain is NTU-107(T) ( = BCRC 17999(T) = KCTC 22876(T) = JCM 16084(T)).
Biodiversity Research Center, National Taiwan University, Section 4, Roosevelt Road, 10617 Taipei, Taiwan, Republic of China.
Chung-Yi
CY
Wang
Department of Horticulture, National Taiwan University, Section 4, Roosevelt Road, 10617 Taipei, Taiwan, Republic of China.
Sz-Jie
SJ
Wu
Chen Yung Memorial Foundation, Taipei, Taiwan, Republic of China.
Chang-Chai
CC
Ng
Department of Horticulture, National Taiwan University, Section 4, Roosevelt Road, 10617 Taipei, Taiwan, Republic of China.
Wen-Sheng
WS
Tzeng
Department of Horticulture, National Taiwan University, Section 4, Roosevelt Road, 10617 Taipei, Taiwan, Republic of China.
Yuan-Tay
YT
Shyu
D015373:Bacterial Typing Techniques; D001482:Base Composition; D004269:DNA, Bacterial / Q000235:genetics; D005227:Fatty Acids / Q000032:analysis; D020632:Halomonas / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012492:Salts; D017422:Sequence Analysis, DNA; D013624:Taiwan; D014871:Water Microbiology
D004269:DNA, Bacterial; D005227:Fatty Acids; D012336:RNA, Ribosomal, 16S; D012492:Salts; C017082:brine