1887

Abstract

Two strains of Gram-stain-negative, chemo-organotrophic, aerobic and halophilic gammaproteobacteria, isolated from within the stem and roots of in salt marshes from the south Atlantic Spanish coast, were found to represent a novel species in the genus through phylogenetic analysis of their 16S rRNA genes and phenotypic characterization. 16S rRNA gene sequences of the two strains shared < 96.2 % similarity with other species, with being the most similar in sequence. They required sodium ions for growth, were able to thrive at low (4 °C) temperatures and at salinities of 12–15 %, were unable to hydrolyse any tested macromolecule except casein, and grew with different monosaccharides, disaccharides, sugar alcohols, organic acids and amino acids. The novel species differed from other species in the use of several sole carbon sources, its temperature and salinity ranges for growth, ion requirements and cellular fatty acid composition, which included C, C and C as major components and C 3-OH, C and C 3-OH as minor components. The name sp. nov. is proposed, with SMJ19 ( = CECT 8886 = KCTC 42958) as the type strain.

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2016-04-01
2020-01-26
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