Enormous diversity of RNA viruses in economic crustaceans

作者：Xuan Dong, Fanzeng Meng, Chengyan Zhou, Juan Li, Tao Hu, Yiting Wang, Guo-Hao Wang, Jingfei Luo, Xuan Li, Shufang Liu, Jie Huang, Weifeng Shi · 发表于：mSystems · 年份：2024 · DOI：10.1128/msystems.01016-24 · 被引用次数：11 · 研究领域：Invertebrate Immune Response Mechanisms、Bacteriophages and microbial interactions、Plant and Fungal Interactions Research

Crustaceans are important food sources worldwide and possess significant ecological status in the marine ecosystem. However, our understanding of the diversity and evolution of RNA viruses in crustaceans, especially in economic crustaceans, is still limited. Here, 106 batches of economic crustaceans including 13 species were collected from 24 locations in China during 2016-2021. We identified 90 RNA viruses, 69 of which were divergent from the known viruses. Viral transcripts were assigned to 18 different viral families/clades and three unclassified groups. Among the identified viruses, five were double-stranded RNA viruses, 74 were positive-sense single-stranded RNA (+ssRNA) viruses, nine were negative-sense single-stranded RNA (-ssRNA) viruses, and two belonged to an unclassified RNA virus group. Phylogenetic analyses showed that crustacean viruses were often clustered with viruses identified from invertebrates. Remarkably, most crustacean viruses were closely related to those from different host species along the same food chain or ecological aquatic niche. In addition, the genome structures of the newly discovered picornaviruses exhibited remarkable diversity. Our study significantly expands the diversity of viruses in important economic crustaceans and provides essential data for the risk assessment of the pathogens spreading in the global aquaculture industry. IMPORTANCE: The study delves into the largely uncharted territory of RNA viruses in crustaceans, which are not ...