两种Vibrio alginolyticus菌体的生物学特征和基因组研究
Yue Zhang1, Yongqi Luo2, Chang Liu3
1South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences/Key Laboratory of South China Sea Fishery Resources Exploitation&Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou, 510300, China; School of Marine Sciences and Fisheries, Jiangsu Ocean University, Lianyungang, 222005, China.
Virology
|December 2, 2025
概括
两种新型菌体vB_VapS_BA4和vB_VapS_BA30被确定可以对抗耐药细菌Vibrio alginolyticus,为水产养殖中抗生素提供可持续的替代品. 这些菌体表现出强大的化活性和环境稳定性.
科学领域:
- 微生物学 微生物学
- 水产养殖是水产养殖的一种方式.
- 细菌治疗疗法是一种细菌治疗.
背景情况:
- 菌Alginolyticus是一种主要的病原体在巴比伦的Areolata水产养殖,造成重大经济损失.
- 耐药菌株的出现需要替代抗生素的控制策略.
研究的目的:
- 为了隔离和描述对抗Vibrio alginolyticus有效的新型细菌菌体.
- 评估这些菌体对可持续水产养殖疾病管理的潜力.
主要方法:
- 使用V. alginolyticus作为宿主,分离和识别了两个菌体 (vB_VapS_BA4和vB_VapS_BA30).
- 通过电子显微镜,生物分析和全基因组测序进行表征.
- 评估化活性,环境稳定性 (pH,温度) 和安全性.
主要成果:
- 体vB_VapS_BA4 (Vasivirus, Inoviridae) 具有ssDNA基因组,潜伏时间为0-20分钟,爆发大小高达523.38 PFU/细胞.
- 体vB_VapS_BA30 (Caudoviricetes) 具有dSDNA基因组,潜伏期<10分钟,爆发大小为32.97 PFU/细胞.
- 这两种菌体在广泛的pH值范围 (2-12) 和温度 (4-65°C) 中都表现出高稳定性,没有检测到抗生素耐药性基因或毒性因子.
结论:
- 描述的菌体表现出强大的抗菌活性和环境弹性,使它们成为控制V. alginolyticus的有希望的候选人.
- 这些发现支持开发基于菌体的策略,以减轻抗生素耐药性,并促进可持续的水产养殖实践.
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