Genome of a tardigrade: Horizontal gene transfer or bacterial contamination?
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We have read the article “Evidence for extensive horizontal gene transfer from the draft genome of a tardigrade” (1) with interest and were astonished by the high number of genes horizontally transferred into the tardigrade genome. Still, we were surprised by the reported genome size of >200 Mbp, which is in stark contrast to a previously published size of ∼78 Mbp determined by the same group (2).
[1] Lewis Stevens,et al. No evidence for extensive horizontal gene transfer in the genome of the tardigrade Hypsibius dujardini , 2016, Proceedings of the National Academy of Sciences.
[2] F. W. Smith,et al. Evidence for extensive horizontal gene transfer from the draft genome of a tardigrade , 2015, Proceedings of the National Academy of Sciences.
[3] Bob Goldstein,et al. The tardigrade Hypsibius dujardini, a new model for studying the evolution of development. , 2007, Developmental biology.