Non-random association of transposable elements with duplicated genomic blocks in Arabidopsis thaliana

Mol Phylogenet Evol. 2003 Dec;29(3):410-6. doi: 10.1016/s1055-7903(03)00262-8.

Abstract

The genome of Arabidopsis thaliana is known to contain numerous open reading frames apparently encoding transposases. In order to test the hypothesis that transposable elements have played a role in segmental duplication in this species, we compared the distribution of transposable elements with that of genomic windows that shared gene families to a greater extent than expected by chance. Phylogenetic analyses indicated that duplication of these segments occurred after the monocot-dicot divergence and probably after the eurosid I-eurosid II divergence. Known transposable elements were found to occur in putatively duplicated segments to a far greater extent than expected on the basis of their genome-wide distribution, suggesting that transposition may have played a role in segmental duplication in this species.

Publication types

  • Comparative Study
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Arabidopsis / genetics*
  • DNA Transposable Elements / genetics*
  • Evolution, Molecular*
  • Gene Duplication*
  • Genome, Plant*
  • Phylogeny

Substances

  • DNA Transposable Elements