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Genomic analysis of Grapevine Retrotransposon 1 (Gret1) in Vitis vinifera

Tipo de material: TextoTextoSeries ; Theoretical Applied Genetics, 111, 871-878, 2005Trabajos contenidos:
  • Pereira, H.S
  • Barao, A
  • Delgado, M
  • Morais-Cecilio, L
  • Viegas, W
Recursos en línea: Resumen: isolated in Vitis vinifera, Gret1, was used to design primers that permitted its analysis in the genome of grapevine cultivars. This retroelement was found to be dispersed throughout the genome with sites of repeated insertions. Fluorescent in situ hybridization indicated multiple Gret1 loci distributed throughout euchromatic portions of chromosomes. REMAP and IRAP proved to be useful as molecular markers in grapevine. Both of these techniques showed polymorphisms between cultivars but not between clones of the same cultivar, indicating differences in Gret1 distribution between cultivars. The combined cytological and molecular results suggest that Gret1 may have a role in gene regulation and in explaining the enormous phenotypic variability that exists between cultivars.
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isolated in Vitis vinifera, Gret1, was used to design primers that permitted its analysis in the genome of grapevine cultivars. This retroelement was found to be dispersed throughout the genome with sites of repeated insertions. Fluorescent in situ hybridization indicated multiple Gret1 loci distributed throughout euchromatic portions of chromosomes. REMAP and IRAP proved to be useful as molecular markers in grapevine. Both of these techniques showed polymorphisms between cultivars but not between clones of the same cultivar, indicating differences in Gret1 distribution between cultivars. The combined cytological and molecular results suggest that Gret1 may have a role in gene regulation and in explaining the enormous phenotypic variability that exists between cultivars.

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