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Updated: Aug 19, 2026

Growing Magnetotactic Bacteria of the Genus Magnetospirillum: Strains MSR-1, AMB-1 and MS-1
Published on: October 17, 2018
The moderately halophilic bacterium Halomonas maura is a free-living diazotroph
Montserrat Argandoña1, Rafael Fernández-Carazo, Inmaculada Llamas
1Departamento de Microbiología, Facultad de Farmacia, Campus Universitario de Cartuja s/n., 18071 Granada, Spain.
Abstract:
Halomonas maura is a moderately halophilic bacterium which lives in saline soils and synthesises an exopolysaccharide known as mauran. Strain S-31T grew in a nitrogen-free medium under an N2 atmosphere; the acetylene reduction assay proved positive under specific conditions. We identified the nifH gene in this strain by using degenerate oligonucleotides designed from highly preserved gene sequences obtained from the alignment of a large number of nifH sequences from different microorganisms. Our results lead us to conclude that H. maura is capable of fixing nitrogen under microaerobic conditions.
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