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The genome of the tardigrade Hypsibius dujardini

Georgios Koutsovoulos, Sujai Kumar, Dominik R. Laetsch, Lewis Stevens, Jennifer Daub, Claire Conlon, Habib Maroon, Fran Thomas, Aziz Aboobaker, Mark Blaxter
doi: https://doi.org/10.1101/033464
Georgios Koutsovoulos
1Institute of Evolutionary Biology, University of Edinburgh, Edinburgh EH9 3FL, UK
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Sujai Kumar
1Institute of Evolutionary Biology, University of Edinburgh, Edinburgh EH9 3FL, UK
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Dominik R. Laetsch
1Institute of Evolutionary Biology, University of Edinburgh, Edinburgh EH9 3FL, UK
2The James Hutton Institute, Invergowrie, Dundee DD2 5DA, UK
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Lewis Stevens
1Institute of Evolutionary Biology, University of Edinburgh, Edinburgh EH9 3FL, UK
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Jennifer Daub
1Institute of Evolutionary Biology, University of Edinburgh, Edinburgh EH9 3FL, UK
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Claire Conlon
1Institute of Evolutionary Biology, University of Edinburgh, Edinburgh EH9 3FL, UK
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Habib Maroon
1Institute of Evolutionary Biology, University of Edinburgh, Edinburgh EH9 3FL, UK
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Fran Thomas
1Institute of Evolutionary Biology, University of Edinburgh, Edinburgh EH9 3FL, UK
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Aziz Aboobaker
3Department of Zoology, University of Oxford, South Parks Road, Oxford OX1 3PS, UK
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Mark Blaxter
1Institute of Evolutionary Biology, University of Edinburgh, Edinburgh EH9 3FL, UK
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  • For correspondence: mark.blaxter@ed.ac.uk
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Abstract

Tardigrades are meiofaunal ecdysozoans and are key to understanding the origins of Arthropoda. We present the genome of the tardigrade Hypsibius dujardini, assembled from Illumina paired and mate-pair data. While the raw data indicated extensive contamination with bacteria, presumably from the gut or surface of the animals, careful cleaning generated a clean tardigrade dataset for assembly. We also generated an expressed sequence tag dataset, a Sanger genome survey dataset and used these and Illumina RNA-Seq data for assembly validation and gene prediction. The genome assembly is ~135 Mb in span, has an N50 length of over 50 kb, and an N90 length of 6 kb. We predict 23,021 protein-coding genes in the genome, which is available in a dedicated genome browser at http://www.tardigrades.org. We compare our assembly to a recently published one for the same species and do not find support for massive horizontal gene transfer. Additional analyses of the genome are ongoing.

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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 4.0 International license.
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Posted December 01, 2015.
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The genome of the tardigrade Hypsibius dujardini
Georgios Koutsovoulos, Sujai Kumar, Dominik R. Laetsch, Lewis Stevens, Jennifer Daub, Claire Conlon, Habib Maroon, Fran Thomas, Aziz Aboobaker, Mark Blaxter
bioRxiv 033464; doi: https://doi.org/10.1101/033464
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The genome of the tardigrade Hypsibius dujardini
Georgios Koutsovoulos, Sujai Kumar, Dominik R. Laetsch, Lewis Stevens, Jennifer Daub, Claire Conlon, Habib Maroon, Fran Thomas, Aziz Aboobaker, Mark Blaxter
bioRxiv 033464; doi: https://doi.org/10.1101/033464

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