1887

Abstract

We investigated the taxonomic relationships among subsp. , subsp. , and . The 16S rRNA gene sequence similarity between subsp. and subsp. was 97.7 %, whereas subsp. , and showed 100 % nucleotide sequence identity. In addition, subsp. diastaticus and formed a single clade in the phylogenetic tree. Digital DNA–DNA relatedness between subsp. and subsp. was only 22.8%, indicative of different species. In comparison, DNA–DNA relatedness values for subsp. , and ranged from 95.8 to 97.2 %, suggesting the three taxa belong to the same genomospecies. Previously reported phenotypic data also supported synonymy. Therefore, we propose that subsp. should be classified as an independent species, sp. nov. The type strain is NBRC 13412 (=ATCC 3315=CBS 713.72=DSM 40496=ISP 5496=JCM 4745=NBRC 3714=NRRL B-1241=RIA 1373). Our data also suggests that and should be reclassified as later heterotypic synonyms of .

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2020-07-09
2020-12-01
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