4 research outputs found
Ty1-copia group retrotransposons and the evolution of retroelements in several angiosperm plants: evidence of horizontal transmission
The phylogenetic relationships among thirty-seven new Ty1-copia group retrotransposons in seven angiosperm plants were
examined by reverse transcriptase and ribonuclease H sequence analysis. Distribution pattern of the retrotransposons of closely
related plant species generally reflects a close phylogenetic relationship. In contrast, we found that several retrotransposon
sequences from the same genome exhibited a high degree of divergence and had a relatively high degree of identity versus
retrotransposon sequences from widely divergent species, including an ancestral phytopathogen fungus. This finding supports the
hypothesis that the horizontal transmission from phytopatogen organism to the host flowering plants could have played a role in
the evolutionary dynamics of Ty1-copia group retrotransposons