title: Non-random association of transposable elements with duplicated genomic blocks in Arabidopsis thaliana.
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.
authors: Department of Biological Sciences, University of South Carolina, Coker Life Sciences Bldg, 700 Sumter St, Columbia, SC 29208, USA. austin@biol.sc.edu
authors: Austin L
authors: AL
authors: Hughes
authors: Robert
authors: R
authors: Friedman
authors: Vikram
authors: V
authors: Ekollu
authors: John R
authors: JR
authors: Rose
mesh_terms: D017360:Arabidopsis / Q000235:genetics*; D004251:DNA Transposable Elements / Q000235:genetics*; D019143:Evolution, Molecular; D020440:Gene Duplication; D018745:Genome, Plant; D010802:Phylogeny
chemical_list: D004251:DNA Transposable Elements