title: Marinospirillum alkaliphilum sp. nov., a new alkaliphilic helical bacterium from Haoji soda lake in Inner Mongolia Autonomous Region of China.
abstract: A new helical, alkaliphilic, gram-negative, chemoorganotrophic bacterium designated strain Z4T was isolated from Haoji soda lake in Inner Mongolia Autonomous Region, China. The isolate grows at salinities between 0.2% and 5.0% (w/v) NaCl and pH range 7.0-11.0, with an optimum at 2.0% (w/v) NaCl and pH 9.5. Its growth temperature ranges from 8 degrees to 49 degrees C with an optimum at 37 degrees C. The G+C content of the DNA is 46.8 mol%. The major isoprenoid quinone is ubiquinone 8 (Q-8). Phylogenetic analyses based on 16S rDNA sequence comparison indicates that strain Z4T is a member of the genus Marinospirillum. Phenotypic features and DNA-DNA homology of less than 20% with the described species of Marinospirillum support the view that strain Z4T represents a new species of the genus Marinospirillum. Strain Z4T (= AS 1.2746) is proposed as the type strain of a new species, named Marinospirillum alkaliphilum sp. nov.
authors.affiliation: Department of Microbial Physiology and Ecology, Institute of Microbiology, Chinese Academy of Sciences, Zhongguancun District, Beijing.
authors.forename: Weizhou
authors.initials: W
authors.lastname: Zhang
authors.forename: Yanfen
authors.initials: Y
authors.lastname: Xue
authors.forename: Yanhe
authors.initials: Y
authors.lastname: Ma
authors.forename: William D
authors.initials: WD
authors.lastname: Grant
authors.forename: Antonio
authors.initials: A
authors.lastname: Ventosa
authors.forename: Peijin
authors.initials: P
authors.lastname: Zhou
mesh_terms: D001419:Bacteria / Q000145:classification* / Q000166:cytology / Q000254:growth & development; D018407:Bacterial Physiological Phenomena; D001482:Base Composition; D002681:China; D002980:Climate; D004269:DNA, Bacterial / Q000737:chemistry; D004275:DNA, Ribosomal / Q000235:genetics; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D013696:Temperature; D014451:Ubiquinone / Q000378:metabolism
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S; D014451:Ubiquinone; C030778:ubiquinone 8