Identification and geographic distribution of genetic groups of Erysiphe necator in Chilean vineyards
Language
en
Article de revue
This item was published in
Vitis. 2014, vol. 53, n° 3, p. 163-165
English Abstract
The grapevine powdery mildew, caused by the biotrophic fungus Erysiphe necator, is one of the most important diseases of this crop in Chile. We converted existing single nucleotide polymorphisms in beta-tubulin, rDNA ...Read more >
The grapevine powdery mildew, caused by the biotrophic fungus Erysiphe necator, is one of the most important diseases of this crop in Chile. We converted existing single nucleotide polymorphisms in beta-tubulin, rDNA intergenic spacer region 1 and eburicol 14-alpha-demethylase into three cleaved amplified polymorphic sequences (CAPS). These CAPS markers were used for the genetic characterization of Erysiphe necator isolates collected on clusters of Vitis vinifera cv. 'Cabernet Sauvignon' in 23 vineyards across Chile. Among the 105 Chilean isolates analyzed, 103 revealed to belong to genetic group B and 2 to genetic group A. These results correspond to the first report of the presence of genetic groups A and B of E. necator in Chile.Read less <
Origin
Hal imported