A group of seven halophilic strains (optimal growth at 2.5-10.0% NaCl) was isolated from samples of a wall and a mural painting, both heavily contaminated by microbial growth, inside the Saint-Catherine chapel of Castle Herberstein (Austria). The strains were subjected to a polyphasic taxonomic study that included DNA-DNA relatedness studies, DNA base-ratio determinations, 16S rDNA sequence analysis, rep-PCR genomic fingerprinting, fatty acid analysis and phenotypic and biochemical characterization. The data obtained indicate that the strains belong to the genus Halomonas and represent a novel species, for which the name Halomonas muralis sp. nov. is proposed. The type strain is strain LMG 20969(T) ( = DSM 14789(T)).


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