Unveiling CRESS DNA Virus Diversity in Oysters by Virome
Peng Zhu,
Chang Liu,
Guang-Feng Liu,
Hong Liu,
Ke-Ming Xie,
Hong-Sai Zhang,
Xin Xu,
Jian Xiao,
Jing-Zhe Jiang
Affiliations
Peng Zhu
College of Oceanography and Ecological Science, Shanghai Ocean University, Shanghai 201306, China
Chang Liu
Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510000, China
Guang-Feng Liu
Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510000, China
Hong Liu
Animal and Plant Inspection and Quarantine Technology Centre, Shenzhen Customs, Shenzhen 518000, China
Ke-Ming Xie
Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510000, China
Hong-Sai Zhang
College of Oceanography and Ecological Science, Shanghai Ocean University, Shanghai 201306, China
Xin Xu
Livestock, Aquaculture and Technology Promotion and Service Center of Conghua District, Guangzhou 510000, China
Jian Xiao
Livestock, Aquaculture and Technology Promotion and Service Center of Conghua District, Guangzhou 510000, China
Jing-Zhe Jiang
College of Oceanography and Ecological Science, Shanghai Ocean University, Shanghai 201306, China
Oysters that filter feed can accumulate numerous pathogens, including viruses, which can serve as a valuable viral repository. As oyster farming becomes more prevalent, concerns are mounting about diseases that can harm both cultivated and wild oysters. Unfortunately, there is a lack of research on the viruses and other factors that can cause illness in shellfish. This means that it is harder to find ways to prevent these diseases and protect the oysters. This is part of a previously started project, the Dataset of Oyster Virome, in which we further study 30 almost complete genomes of oyster-associated CRESS DNA viruses. The replication-associated proteins and capsid proteins found in CRESS DNA viruses display varying evolutionary rates and frequently undergo recombination. Additionally, some CRESS DNA viruses have the capability for cross-species transmission. A plethora of unclassified CRESS DNA viruses are detectable in transcriptome libraries, exhibiting higher levels of transcriptional activity than those found in metagenome libraries. The study significantly enhances our understanding of the diversity of oyster-associated CRESS DNA viruses, emphasizing the widespread presence of CRESS DNA viruses in the natural environment and the substantial portion of CRESS DNA viruses that remain unidentified. This study’s findings provide a basis for further research on the biological and ecological roles of viruses in oysters and their environment.
