Institute of Medical Microbiology and German Center for Infection Research, Partner site Giessen-Marburg-Langen, Justus Liebig University, Giessen, Germany.
Int J Syst Evol Microbiol. 2019 Dec;69(12):3924-3926. doi: 10.1099/ijsem.0.003706. Epub 2019 Sep 6.
The species currently comprises two subspecies, viz. subsp. and subsp. . The latter species was created by considering the differentiating endospore-formation capability of isolate KRED. A member of the Subcommittee on the Taxonomy of Enterobacteriaceae for the International Committee on Systematics of Prokaryotes conducted a re-examination of KRED and failed to detect its endospore-forming capability, thereby questioning the validity of subsp. as a separate subspecies. Nevertheless, the taxonomic allocation of subsp. has been followed till date. To obtain clarity for taxonomic allocation based on genome-based analysis, we sequenced the genome of type strain subsp. KRED=DSM 17174 and carried out the analyses recommended to define the subspecies. As a result, DSM 17174 does not satisfy the genomic criteria for defining a subspecies: i.e. does not form a distinguishable clade by overall genomic related indexing and phylogenomic treeing. Also, there is currently no other rationale for separate recognition of this species. We propose the removal of the subsp. designation to avoid further confusion in the literature.
该物种目前包含两个亚种，即亚种和亚种。后者是通过考虑分离株 KRED 的区别内生孢子形成能力而创建的。负责肠杆菌科分类的国际原核生物系统学委员会小组委员会的一名成员对 KRED 进行了重新检查，未能检测到其内生孢子形成能力，从而质疑亚种作为一个独立亚种的有效性。尽管如此，亚种的分类分配至今仍在沿用。为了根据基于基因组的分析获得明确的分类分配，我们对模式菌株亚种的基因组进行了测序。KRED=DSM 17174，并进行了推荐的分析，以定义亚种。结果表明，DSM 17174不符合定义亚种的基因组标准：即通过整体基因组相关指数和系统发育树分析不能形成可区分的进化枝。此外，目前没有其他理由单独识别该物种。我们建议删除亚种的名称，以避免文献中进一步混淆。
