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Title |
Ty1-copia group retrotransposons and the evolution of retroelements in several angiosperm plants: evidence of horizontal transmission |
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Authors |
Pasqualina Woodrow*, Loredana F Ciarmiello, Stefania Fantaccione, Maria Grazia Annunziata, Giovanni Pontecorvo & Petronia Carillo |
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Affiliation |
II University of Naples, Department of Life Science, via Vivaldi 43, 81100 Caserta, Italy.
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pasqualina woodrow@unina2.it; *Corresponding author
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Article Type |
Hypothesis
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Date |
Received February 20, 2012; Accepted March 28, 2012; Published March 31, 2012
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Abstract |
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.
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Keywords |
evolutionary dynamics, flowering plants, horizontal gene transfer, retrotransposons
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Citation |
Woodrow et al.
Bioinformation 8(6): 267-271 (2012) |
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Edited by |
P Kangueane
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ISSN |
0973-2063
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Publisher |
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License |
This is an Open Access article which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. This is distributed under the terms of the Creative Commons Attribution License. |