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Evolution and Diversity of Transposable Elements in Vertebrate Genomes
Texas Tech Univ, Dept Biol Sci, Lubbock, TX 79409 USA..
Texas Tech Univ, Dept Biol Sci, Lubbock, TX 79409 USA..
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Evolutionary Biology.
Texas Tech Univ, Dept Biol Sci, Lubbock, TX 79409 USA..
2017 (English)In: Genome Biology and Evolution, ISSN 1759-6653, E-ISSN 1759-6653, Vol. 9, no 1, p. 161-177Article in journal (Refereed) Published
Abstract [en]

Transposable elements (TEs) are selfish genetic elements that mobilize in genomes via transposition or retrotransposition and often make up large fractions of vertebrate genomes. Here, we review the current understanding of vertebrate TE diversity and evolution in the context of recent advances in genome sequencing and assembly techniques. TEs make up 4-60% of assembled vertebrate genomes, and deeply branching lineages such as ray-finned fishes and amphibians generally exhibit a higher TE diversity than the more recent radiations of birds and mammals. Furthermore, the list of taxa with exceptional TE landscapes is growing. We emphasize that the current bottleneck in genome analyses lies in the proper annotation of TEs and provide examples where superficial analyses led to misleading conclusions about genomeevolution. Finally, recent advances in long-read sequencing will soon permit access to TE-rich genomic regions that previously resisted assembly including the gigantic, TE-rich genomes of salamanders and lungfishes.

Place, publisher, year, edition, pages
OXFORD UNIV PRESS , 2017. Vol. 9, no 1, p. 161-177
Keywords [en]
vertebrate, transposable element, transposons, retrotransposons
National Category
Evolutionary Biology Genetics
Identifiers
URN: urn:nbn:se:uu:diva-319812DOI: 10.1093/gbe/evw264ISI: 000396057400014OAI: oai:DiVA.org:uu-319812DiVA, id: diva2:1087852
Available from: 2017-04-10 Created: 2017-04-10 Last updated: 2017-11-29Bibliographically approved

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