Genome-wide comparative analysis of the transposable elements in the related species Arabidopsis thaliana and Brassica oleracea.

ABSTRACT: Transposable elements (TEs) are the major component of plant genomes where they contribute significantly to the >1,000-fold genome size variation. To understand the dynamics of TE-mediated genome expansion, we have undertaken a comparative analysis of the TEs in two related organisms: the weed Arabidopsis thaliana (125 megabases) and Brassica oleracea ( approximately 600 megabases), a species with many crop plants. Comparison of the whole genome sequence of A. thaliana with a partial draft of B. oleracea has permitted an estimation of the patterns of TE amplification, diversification, and loss that has occurred in related species since their divergence from a common ancestor. Although we find that nearly all TE lineages are shared, the number of elements in each lineage is almost always gr

SUBMITTER: Zhang X 

PROVIDER: S-EPMC397431 | biostudies-literature | 2004 Apr

REPOSITORIES: biostudies-literature