1887

Abstract

Three Gram-negative, non-motile, non-pigmented, oxidase-positive coccobacilli capable of growth at temperatures from −10 to 30 °C and salinities of 0 to 1.7 M NaCl were isolated from Siberian permafrost and characterized. Both 16S rRNA and gene sequencing studies placed the isolates in the within the genus . However, with higher bootstrap values and reproducible tree topologies, represented a more reliable phylogenetic marker for the taxonomy of species. DNA–DNA hybridization data supported tree topologies and established two relatedness groups within the three isolates; neither of these groups was related at the species level to any previously described species. The two groups of isolates could be differentiated phenotypically from 13 previously described species using API strips. These results support the existence of two novel species of , for which we propose the names sp. nov. (type strain K5=DSM 17306=VKM B-2378) and sp. nov. (type strain 273-4=DSM 17307=VKM B-2377).

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2006-06-01
2019-12-06
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