Journal
GENETICA
Volume 125, Issue 2-3, Pages 325-332Publisher
SPRINGER
DOI: 10.1007/s10709-005-7926-3
Keywords
evolution; grass; transposable elements; TRIM; Triticeae; wheat
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Transposable elements are the main component of plant genomes, especially in grass species. In a previous analysis, we have identified two unusual types of Class I elements, two homologous Veju TRIM elements, but with an unusual long structure. They are formed by the junction of a yet unidentified segment labelled unknown DNA, flanked by the borders of the classical Veju element. Here, we show that the long (Veju_L) and the short forms (Veju_S) coexist within wheat genomes. The associated unknown DNA had always the same origin, and the Veju_L came probably from either illegitimate recombinations or 'template switching' between the Veju_S and another unique unknown DNA sequence. This junction then evolved differently within wheat genomes.
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