College of Life Sciences, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
College of Food Science, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
Curr Microbiol. 2024 May 11;81(7):168. doi: 10.1007/s00284-024-03712-x.
In 2018, Nouioui et al. proposed that Bifidobacterium coryneforme was a later synonym of Bifidobacterium indicum on the basis of the digital DNA-DNA hybridization (dDDH) value (85.0%) between B. coryneforme LMG 18911 and B. indicum LMG 11587. However, in the study of Scardovi et al. (1970), the type strains of B. indicum and B. coryneforme only exhibited 60% DNA-DNA hybridization value. In the present study, the genomes of B. coryneforme CGMCC 1.2279, B. coryneforme JCM 5819, B. indicum JCM 1302, B. indicum CGMCC 1.2275, B. indicum DSM 20214, B. indicum LMG 27437, B. indicum ATCC 25912, B. indicum KCTC 3230, B. indicum CCUG 34985, were sequenced, and the taxonomic relationship between B. coryneforme and B. indicum was re-evaluated. On the basis of the results presented here, (i) ATCC 25912 and DSM 20214 deposited by Vittorio Scardovi are two different strains; (ii) the type strain of B. indicum is ATCC 25912 (= JCM 1302 = LMG 27437 = CGMCC 1.2275 = KCTC 3230), and not DSM 20214 (= BCRC 14674 = CCUG 34985 = LMG 11587); (iii) B. coryneforme and B. indicum represent two different species of the genus Bifidobacterium; (iv) strain DSM 20214 (= BCRC 14674 = CCUG 34985 = LMG 11587) belongs to B. coryneforme.
2018 年，Nouioui 等人基于双歧杆菌 coryneforme LMG 18911 和双歧杆菌 indicum LMG 11587 之间的数字 DNA-DNA 杂交（dDDH）值（85.0%），提出双歧杆菌 coryneforme 是双歧杆菌 indicum 的后同物。然而，在 Scardovi 等人的研究中（1970 年），双歧杆菌 indicum 和双歧杆菌 coryneforme 的模式株仅显示 60%的 DNA-DNA 杂交值。在本研究中，对双歧杆菌 coryneforme CGMCC 1.2279、双歧杆菌 coryneforme JCM 5819、双歧杆菌 indicum JCM 1302、双歧杆菌 indicum CGMCC 1.2275、双歧杆菌 indicum DSM 20214、双歧杆菌 indicum LMG 27437、双歧杆菌 indicum ATCC 25912、双歧杆菌 indicum KCTC 3230、双歧杆菌 indicum CCUG 34985 的基因组进行了测序，并重新评估了双歧杆菌 coryneforme 和双歧杆菌 indicum 之间的分类关系。基于这里呈现的结果，（i）Vittorio Scardovi 存放的 ATCC 25912 和 DSM 20214 是两个不同的菌株；（ii）双歧杆菌 indicum 的模式株是 ATCC 25912（=JCM 1302=LMG 27437=CGMCC 1.2275=KCTC 3230），而不是 DSM 20214（=BCRC 14674=CCUG 34985=LMG 11587）；（iii）双歧杆菌 coryneforme 和双歧杆菌 indicum 代表双歧杆菌属的两个不同种；（iv）菌株 DSM 20214（=BCRC 14674=CCUG 34985=LMG 11587）属于双歧杆菌 coryneforme。
