Genotypic and phenotypic characterization of Puccinia horiana, a quarantine rust pathogen on Chrysanthemum

Mathias De Backer, Martine Maes, Erik Van Bockstaele, Theo Van der Lee, Kurt Heungens

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureC3: Congres abstract


Puccinia horiana is one of the most important diseases in chrysanthemum production. Phenotypic characterization of a worldwide collection of isolates via controlled inoculation experiments on a set of differential cultivars revealed the presence of pathotypes and at least seven avirulence genes. Genotypic characterization involved the development and application of 25 differential SNP markers. Genotypic diversity was strongly related to geographic origin, while evidence of sporadic large distance international spread as well as recombination were also observed. Although pathotype-based diversity was larger than SNP-based diversity, the most virulent pathotypes could be identified based on their SNP profile. This allows the use of the genotyping technique in quarantine monitoring.

Titel17th Symposium on Applied Biological Sciences
StatusGepubliceerd - 10-feb-2012
Evenement17th PhD Symposium on Applied Biological Sciences (2012) - Leuven, België
Duur: 10-feb-201210-feb-2012

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