Molecular analysis of flower pigment genes in Azalea
1999
Schepper, S. de | Debergh, P. | Bockstaele, E. van (Gent Univ. (Belgium). Dept. of Plant Production) | Riek, J. de | Loose, M. de
The occurrence of sports is frequently observed in plant species. In vegetatively propagated plants like azalea, it is considered as a useful additional source of variation. More than half of the commercial azalea assortment is composed of flower colour sports. Elucidation of the molecular mechanism behind the induction event, will eventually lead to a more direct and controlled breeding towards novel flower colour phenotypes. Transposition and epigenetic effects have been extensively reported as causes of flower colour variation in species like snapdragon, petunia and Japanese morning glory. To clarify the cause of the variegated azalea flower colour phenotypes, the characterisation of the endogenous pigment genes is the first requirement. An azalea flower bud cDNA library was screened using heterologous flavonoid genes. A full length cDNA was isolated using the dfrA cDNA of petunia. The azalea sequence shows between 65/ and 77/ homology with dfr cDNA's of other species.
Mostrar más [+] Menos [-]Palabras clave de AGROVOC
Información bibliográfica
Este registro bibliográfico ha sido proporcionado por University of Liège