W181Transposable Element Distribution, Abundance and Impact in Genome Evolution in the Genus Coffea
Time: 5:40 PM
To study the evolution of Coffea species and analyze their transposable elements composition, we used the Roche 454 technology to perform a low-coverage sequencing (ranged between 5-10X) of 11 species representative of the geographic distribution of the genus. The composition and distribution of transposable elements were studied. Despite the previous assumption that transposable elements don’t seem to play an important role in genome size variation in Coffea, we found a clear variation of one LTR Retrotransposon family called SIRE: SIREs are abundant in Eucoffea but almost absent from Mozambicoffea while Mascarocoffea species are completely devoid of these elements. These results suggest that SIRE are involved in Coffea genome differentiation and the restructuring of the Eucoffea genomes.