Characterization of G-type Clostridium perfringens bacteriophages and their disinfection effect on chicken meat
文献类型： 外文期刊
作者： Tian, Rui 1 ; Xu, Sixiang 1 ; Li, Pei 1 ; Li, Mengxuan 3 ; Liu, Yuqing 3 ; Wang, Kaicheng 4 ; Liu, Guangjin 1 ; Li, Yubao 5 ; Dai, Lei 6 ; Zhang, Wei 1 ;
作者机构： 1.Nanjing Agr Univ, Sanya Inst, Yazhou Bay Sci & Technol City, Yabulun Ind Pk, Sanya 572024, Peoples R China
2.Nanjing Agr Univ, Coll Vet Med, 1 Weigang, Nanjing 210095, Peoples R China
3.Shandong Acad Agr Sci, Inst Anim Sci & Vet Med, Jinan 250100, Shandong, Peoples R China
4.China Anim Hlth & Epidemiol Ctr, 369 Nanjing Rd, Qingdao, Shandong, Peoples R China
5.Liaocheng Univ, Agr Sci & Engn Sch, Liaocheng, Peoples R China
6.Hainan Anim Dis Prevent & Control Ctr, 16 Xingdan Rd, Haikou, Peoples R China
关键词： Phage; Phage disinfection; Clostridium perfringens; Genome analysis; Chicken
期刊名称：ANAEROBE （ 影响因子：2.3； 五年影响因子：2.9 ）
ISSN： 1075-9964
年卷期： 2023 年 81 卷
页码：
收录情况： SCI
摘要： Objective: Clostridium perfringens is one of most important bacterial pathogens in the poultry industry and mainly causes necrotizing enteritis (NE). This pathogen and its toxins can cause foodborne diseases in humans through the food chain. In China, with the rise of antibiotic resistance and the banning of antibiotic growth promoters (AGPs) in poultry farming, food contamination and NE are becoming more prevalent. Bacteriophages are a viable technique to control C. perfringens as an alternative to antibiotics. We isolated Clostridium phage from the environment, providing a new method for the prevention of NE and C. perfringens contamination in meat.Methods: In this study, we selected C. perfringens strains from various regions and animal sources in China for phage isolation. The biological characteristics of Clostridium phage were studied in terms of host range, MOI, one-step curve, temperature and pH stability. We sequenced and annotated the genome of the Clostridium phage and performed phylogenetic and pangenomic analyses. Finally, we studied its antibacterial activity against bacterial culture and its disinfection effect against C. perfringens in meat.Results: A Clostridium phage, named ZWPH-P21 (P21), was isolated from chicken farm sewage in Jiangsu, China. P21 has been shown to specifically lyse C. perfringens type G. Further analysis of basic biological characteristics showed that P21 was stable under the conditions of pH 4-11 and temperature 4-60 degrees C, and the optimal multiple severity of infection (MOI) was 0.1. In addition, P21 could form a "halo" on agar plates, suggesting that the phage may encode depolymerase. Genome sequence analysis showed that P21 was the most closely related to Clostridium phage CPAS-15 belonging to the Myoviridae family, with a recognition rate of 97.24% and a query coverage rate of 98%. No virulence factors or drug resistance genes were found in P21. P21 showed promising antibacterial activity in vitro and in chicken disinfection ex-periments. In conclusion, P21 has the potential to be used for preventing and controlling C. perfringens in chicken food production. (c) 2023 Elsevier Ltd. All rights reserved.
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