Application of the OmniLogTM microbial identification system in the detection of the host spectrum for wild-type plague phage in Qinghai Plateau
10.3969/j.issn.1002-2694.2024.00.006
- VernacularTitle:OmniLog?微生物鉴定系统在青海高原野生型鼠疫噬菌体宿主谱检测中的应用研究
- Author:
Cun-Xiang LI
1
;
Zhi-Zhen QI
;
Qing-Wen ZHANG
;
Hai-Hong ZHAO
;
Long MA
;
Pei-Song YOU
;
Jian-Guo YANG
;
Hai-Sheng WU
;
Jian-Ping FENG
Author Information
1. 青海省地方病预防控制所/国家卫生健康委鼠疫防治研究重点实验室(共建),西宁 811602
- Keywords:
bacteriophage;
Yersinia pestis;
host spectrum;
OmniLogTM microbial identification system;
drop method
- From:
Chinese Journal of Zoonoses
2024;40(1):21-25
- CountryChina
- Language:Chinese
-
Abstract:
The growth of three plague phages from Qinghai Plateau in two Yersinia pestis strains(plague vaccine strains EV76 and 614F)and four non-Yersinia pestis strains(Yersinia pseudotuberculosis PTB3,PTB5,Escherichia coli V517,and Yersinia enterocolitica 52302-2)were detected through a micromethod based on the OmniLogTM microbial identification system and by the drop method,to provide a scientific basis for future ecological studies and classification based on the host range.For plague vaccine strains EV76 and 614F,successful phage infection and subsequent phage growth were observed in the host bacte-rium.Diminished bacterial growth and respiration and a concomitant decrease in color were observed with the OmniLogTM mi-crobial identification system at 33 ℃ for 48 h.Yersinia pseudotuberculosis PTB5 was sensitive to Yersinia pestis phage 476,but Yersinia pseudotuberculosis PST5 was insensitive to phage 087 and 072204.Three strains of non-Yersinia pestis(Yersinia pseudotuberculosis PTB3,Escherichia coli V517,and Yersinia enterocolitica 52302-2)were insensitive to Yersinia pestis pha-ges 087,072204,and 476 showed similar growth curves.The growth of phages 476 and 087,as determined with the drop method,in two Yersinia pestis strains(plague vaccine strains EV76 and 614F)and four non-Yersinia pestis strains(Yersinia pseudotuberculosis PTB3,Escherichia coli V517,and Yersin-ia enterocolitica 52302-2)showed the same results at 37 ℃,on the basis of comparisons with the OmniLogTM microbial i-dentification system;in contrast,phages 072204 did not show plaques on solid medium at 37 ℃ with plague vaccine strains EV76 and 614F.Determination based on the OmniLogTM detection system can be used as an alternative to the traditional determination of the host range,thus providing favorable application val-ue for determining the interaction between the phage and host bacteria.
