1887

Abstract

We carried out a comparative taxonomic study of and subsp. , as well as of five halophilic strains (IB574, IB872, PR5, PR919 and PR932), isolated from salterns in Spain and Puerto Rico that were closely related to these bacteria. Multilocus sequence analysis of concatenated , , and housekeeping genes showed that they constituted a single cluster separate from the other species and subspecies of . Experimental and DNA–DNA hybridization studies indicated that they are members of the same species, with relatedness of 100–74 % and 97.8–70.0 %, respectively. The average nucleotide identity (ANI) determined for these strains was 99.7–95.6 % for ANIb and 99.7–95.7 % for OrthoANI. However, the ANI values for DSM 8285 with respect to DSM 11403 and DSM 16359 were 78.7 and 78.9 % (ANIb) and 79.4 and 79.4 % (OrthoANI), respectively. The phylogenomic tree based on 1072 concatenated orthologous single-copy core genes confirmed that , and the five new isolates constitute a coherent single phylogroup, separated from the other species and subspecies of . All these data indicate that is a heterotypic synonym of and we propose an emended description of this species.

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2018-05-01
2024-03-29
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