Komaki Hisayuki, Ichikawa Natsuko, Oguchi Akio, Hamada Moriyuki, Tamura Tomohiko, Fujita Nobuyuki, Suzuki Ken-Ichiro
Biological Resource Center, National Institute of Technology and Evaluation (NBRC), Chiba 292-0818, Japan.
NBRC, Tokyo 151-0066, Japan.
Int J Syst Evol Microbiol. 2017 Feb;67(2):343-345. doi: 10.1099/ijsem.0.001628. Epub 2017 Mar 16.
The aim of this study was to reclarify the taxonomic relationship among Streptomyces hygroscopicus subsp. hygroscopicus, Streptomyces endus and Streptomyces sporocinereus. Whole genome shotgun sequencing was performed for the type strains of these three taxa. Average nucleotide identity and digital DNA-DNA hybridization values among the three taxa were greater than the thresholds for bacterial species delineation, indicating that they belong to the same genomospecies. In addition, the phenotypic data previously reported also support the synonymy. Therefore, S. endus and S. sporocinereus should be reclassified as later heterotypic synonyms of S. hygroscopicus subsp. hygroscopicus.
本研究的目的是重新阐明吸水链霉菌吸水亚种、内生链霉菌和产孢灰链霉菌之间的分类关系。对这三个分类单元的模式菌株进行了全基因组鸟枪法测序。这三个分类单元之间的平均核苷酸同一性和数字DNA-DNA杂交值高于细菌物种界定的阈值，表明它们属于同一基因组种。此外，先前报道的表型数据也支持同义关系。因此，内生链霉菌和产孢灰链霉菌应重新分类为吸水链霉菌吸水亚种的晚出异名。
