Effects of Recombination Rate and Gene Density on Transposable Element Distributions in Arabidopsis thaliana

摘要: Transposable elements (TEs) comprise a major component of eukaryotic genomes, and exhibit striking deviations from random distribution across the genomes studied, including humans, flies, nematodes, plants. Although considerable progress has been made in documenting these patterns, causes are subject to debate. Here, we use genome sequence Arabidopsis thaliana test for importance competing models natural selection against TE insertions. We show that, despite accumulation near centromeres, recombination does not generally correlate with abundance, suggesting that ectopic influence A. thaliana. In contrast, consistent negative correlation between gene density strong under-representation insertions introns suggest disruption expression is playing more important role High rates self-fertilization may reduce rate structuring inbreeding organisms such as Caenorhabditis elegans.