Biodiversity Science ›› 2000, Vol. 08 ›› Issue (2): 146-152.doi: 10.17520/biods.2000021
• 论文 •
DONG Xiu-Zhu, SHEN De-Long, XIN Yu-Hua
In the present study , the 16S rDNA of Bif idobacterium inopinatum with low GC content and B .
thermacidophilum sp. nov. was sequenced. A phylogenetic dendrogram was constructed using the two sequences and other 16S rDNA sequences of 19 Bif idobacterium spp. and eight related genera obtained from
DNA databases. The results showed that except for B . inopinutum , all the bifidobacteria were clustered at
similarity levels( ≥92 %) of 16S rDNA sequences. Although B . inopinutum showed a relatively lower similarity (87 %～89 %) with the other bifidobacteria , it was closely related to the Bif idobacterium spp. rather than
to other gram-positive bacteria with similar GC content . This study did not reveal the evolutionary pattern
from low GC to high GC content in the gram-positive bacterial phylum. In addition , the divergence between
16S rDNA sequence and genomic DNA GC content in the study of bacterial phylogenetics has to be resolved
using other conserved macrobiological moleculars.
DONG Xiu-Zhu, SHEN De-Long, XIN Yu-Hua. (2000) Phylogenetic relationship between the genus Bifidobacterium and related bacteria based on 16S rDNA homology. Biodiversity Science, 08(2), 146-152.
Add to citation manager EndNote|Reference Manager|ProCite|BibTeX|RefWorks
Copyright ©2017 Biodiversity Science
Editorial Office of Biodiversity Science, 20 Nanxincun, Xiangshan, Beijing 100093, China
Tel: 86-10-62836137, 62836665 E-mail: firstname.lastname@example.org