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  • Chiu, CH (author)

Bichir HoxA cluster sequence reveals surprising trends in ray-finned fish genomic evolution

  • Article/chapterEnglish2004

Publisher, publication year, extent ...

  • 2004-01-05
  • Cold Spring Harbor Laboratory,2004

Numbers

  • LIBRIS-ID:oai:lup.lub.lu.se:630cbb5a-d9c4-4ed1-be22-870191a81057
  • https://lup.lub.lu.se/record/290096URI
  • https://doi.org/10.1101/gr.1712904DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • The study of Hox clusters and genes provides insights into the evolution of genomic regulation of development. Derived ray-finned fishes (Actinopterygii, Teleostei) such as zebrafish and pufferfish possess duplicated Hox clusters that have undergone considerable sequence evolution. Whether these changes are associated with the duplication(s) that produced extra Hox clusters is unresolved because comparison with basal lineages is unavailable. We sequenced and analyzed the HoxA cluster of the bichir (Polypterus senegalus), a phylogenetically basal actinopterygian. Independent lines of evidence indicate that bichir has one HoxA cluster that is mosaic in its patterns of noncoding sequence conservation and gene retention relative to the HoxA clusters of human and shark, and the HoxAalpha and HoxAbeta clusters of zebrafish, pufferfish, and striped bass. HoxA cluster noncoding sequences conserved between bichir and euteleosts indicate that novel cis-sequences were acquired in the stem actinopterygians and maintained after cluster duplication. Hence, in the earliest actinopterygians, evolution of the single HoxA cluster was already more dynamic than in human and shark. This tendency peaked among teleosts after HoxA cluster duplication.

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  • Dewar, K (author)
  • Wagner, GP (author)
  • Takahashi, K (author)
  • Ruddle, F (author)
  • Ledje, ChristinaLund University,Lunds universitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Department of Biology,Faculty of Science(Swepub:lu)gen-cle (author)
  • Bartsch, P (author)
  • Scemama, JL (author)
  • Stellwag, E (author)
  • Fried, C (author)
  • Prohaska, SJ (author)
  • Stadler, PF (author)
  • Amemiya, CT (author)
  • Biologiska institutionenNaturvetenskapliga fakulteten (creator_code:org_t)

Related titles

  • In:Genome Research: Cold Spring Harbor Laboratory14:1, s. 11-171549-54691088-9051

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