Alkalispirillum mobile gen. nov., spec. nov., an alkaliphilic non-phototrophic member of the Ectothiorhodospiraceae


Rijkenberg, Micha J.A., Kort, Remco and Hellingwerf, Klaas J. (2001) Alkalispirillum mobile gen. nov., spec. nov., an alkaliphilic non-phototrophic member of the Ectothiorhodospiraceae Archives of Microbiology, 175, (5), pp. 369-375. (doi:10.1007/s002030100274).

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Description/Abstract

From cultures of the anoxygenic phototroph Halorhodospira halophila SL-1, an aerobic, gram-negative spirillum was isolated. This moderately halophilic, alkaliphilic bacterium was motile by means of a single polar flagellum. It is described here as Alkalispirillum mobile gen. nov., spec. nov. Phylogenetic analysis of the Alkalispirillum mobile 16S rRNA gene led to its classification in the %-subclass of the Proteobacteria, as it appears closely related to phototrophic purple sulfur bacteria of the genera Ectothiorhodospira and Halorhodospira. Surprisingly, A. mobile is an obligate aerobe. The organism grows optimally with a number of carboxylic acids (such as sodium acetate) as carbon source, at 2% (i.e. approximately 0.34 M) sodium chloride, at pH 9-10, and at temperatures ranging from 35 to 38 °C. The dominant cellular fatty acids of Alkalispirillum mobile are C12:0, C16:0, C18:1cis11, and C18:0; its G+C content is 66.2-0.5 mol%.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1007/s002030100274
ISSNs: 0302-8933 (print)
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ePrint ID: 41425
Date :
Date Event
2001Published
Date Deposited: 07 Sep 2006
Last Modified: 16 Apr 2017 19:01
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/41425

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