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The RNA Virome of Echinoderms

View ORCID ProfileElliot W. Jackson, View ORCID ProfileRoland C. Wilhelm, View ORCID ProfileDaniel H. Buckley, View ORCID ProfileIan Hewson
doi: https://doi.org/10.1101/2022.03.01.482561
Elliot W. Jackson
1Department of Microbiology, Cornell University, Ithaca NY USA
2Scripps Institution of Oceanography, University of California San Diego, La Jolla CA, USA
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  • For correspondence: ewj34@cornell.edu
Roland C. Wilhelm
3School of Integrative Plant Science, Bradfield Hall, Cornell University, Ithaca, NY USA
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Daniel H. Buckley
1Department of Microbiology, Cornell University, Ithaca NY USA
3School of Integrative Plant Science, Bradfield Hall, Cornell University, Ithaca, NY USA
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Ian Hewson
1Department of Microbiology, Cornell University, Ithaca NY USA
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Abstract

Echinoderms are a phylum of marine invertebrates that include model organisms, keystone species, and animals commercially harvested for seafood. Despite their scientific, ecological, and economic importance, there is little known about the diversity of RNA viruses that infect echinoderms compared to other invertebrates. We screened over 900 transcriptomes and viral metagenomes to characterize the RNA virome of 38 echinoderm species from all five classes (Crinoidea, Holothuroidea, Asteroidea, Ophiuroidea and Echinoidea). We identified 347 viral genome fragments that were classified to genera and families within nine viral orders - Picornavirales, Durnavirales, Martellivirales, Nodamuvirales, Reovirales, Amarillovirales, Ghabrivirales, Mononegavirales, and Hepelivirales. We compared the relative viral representation across three life stages (embryo, larvae, adult) and characterized the gene content of contigs which encoded complete or near-complete genomes. The proportion of viral reads in a given transcriptome was not found to significantly differ between life stages though the majority of viral contigs were discovered from transcriptomes of adult tissue. This study illuminates the biodiversity of RNA viruses from echinoderms, revealing the occurrence of viral groups in natural populations.

Competing Interest Statement

The authors have declared no competing interest.

Footnotes

  • https://osf.io/JXUAM

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-ND 4.0 International license.
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Posted March 02, 2022.
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The RNA Virome of Echinoderms
Elliot W. Jackson, Roland C. Wilhelm, Daniel H. Buckley, Ian Hewson
bioRxiv 2022.03.01.482561; doi: https://doi.org/10.1101/2022.03.01.482561
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The RNA Virome of Echinoderms
Elliot W. Jackson, Roland C. Wilhelm, Daniel H. Buckley, Ian Hewson
bioRxiv 2022.03.01.482561; doi: https://doi.org/10.1101/2022.03.01.482561

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