Abstract
Four Gram-stain-positive bacterial strains (designated 475-2T, 46-6BT, 778-2T and A810-3), isolated from traditional Chinese pickle, were characterized using a polyphasic taxonomic approach. Strain 475-2T was most closely related to the type strain of Lapidilactobacillus achengensis, having 99.9% 16S rRNA gene sequence similarity, 94.1-95.1% average nucleotide identity (ANI) and 57.6% digital DNA-DNA hybridization (dDDH) values. Strain 46-6BT was most closely related to the type strain of Secundilactobacillus similis, having 99.8% 16S rRNA gene sequence similarity, 94.3-94.9% ANI and 58.9-59.2% dDDH values. Strains 778-2T and A810-3 were phylogenetically related to the type strains of Streptococcus salivarius, Streptococcus thermophilus and Streptococcus vestibularis, having 99.7-99.9% 16S rRNA gene sequence similarities, 89.1-94.4% ANI and 39.0-55.5% dDDH values. Based upon the data obtained in the present study, three novel species, Lapidilactobacillus salsurivasis sp. nov., Secundilactobacillus muriivasis sp. nov. and Streptococcus parasalivarius sp. nov., are proposed and the type strains are 475-2T (= JCM 36613T = CCTCC AB 2023258T = LMG 33412T), 46-6BT (= JCM 36612T = CCTCC AB 2023259T = LMG 33411T) and 778-2T (= JCM 36614T = CCTCC AB 2023257T = LMG 33413T), respectively.
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