Meta-Transcriptomic Analysis Reveals Novel RNA Viruses in Polychaetes Perinereis
2024
Jingfei Luo | Fan Zhang | Chengyan Zhou | Fanzeng Meng | Guohao Wang | Liang Qiu | Weifeng Shi | Jie Huang | Xuan Dong
Perinereis species are essential benthonic animals in coastal ecosystems and have significant roles as live feed in aquaculture, owing to their high-protein and low-fat nutritional profile. Despite their ecological importance, the viral communities associated with these organisms need to be better understood. In this study, we generated 2.6 ×: 108 reads using meta-transcriptomic sequencing and de novo assembled 5.3 ×: 103 virus-associated contigs. We identified 12 novel RNA viruses from two species, Perinereis aibuhitensis and P. wilsoni, which were classified into four major viral groups: Picobirnaviridae, Marnaviridae, unclassified Picornavirales, and unclassified Bunyavirales. Our findings revealed the hidden diversity of viruses and genome structures in Perinereis, enriching the RNA virosphere and expanding the host range of Picobirnaviridae, Marnaviridae, and Bunyavirales. This study also highlighted the potential biosecurity risk of the novel viruses carried by Perinereis to aquaculture.
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