Phenotypic and genotypic characteristics of Belgian isolates of Phytophthora infestans in 2013-2016
- César, V. (2017). Phenotypic and genotypic characteristics of Belgian isolates of Phytophthora infestans in 2013-2016. Poster in: Euroblight workshop, Aarhus - Danemark,
| Type | Poster |
| Year | 2017 |
| Title | Phenotypic and genotypic characteristics of Belgian isolates of Phytophthora infestans in 2013-2016 |
| Event name | Euroblight workshop |
| Event location | Aarhus - Danemark |
| Abstract | A total of 385 isolates of Phytophthora infestans were collected in the southern part of Belgium (Wallonia) in several potato fields, volunteers and dumps during the years 2013-2016. Most of isolates were tested for several phenotypic characteristics, such as mating type, virulence and sensitivity to metalaxyl. The isolates were analyzed using standardized 12 plex Euroblight SSR genotyping (Euroblight monitoring). Genotypes were determined by comparing fragment sizes with isolates previously genotyped. Clone 13_A2 (Blue-13) made up 50% of the samples and was resistant to Metalaxyl. The second most prevalent clone (1_A1) was found at a 22% frequency. The frequency of the clone 6_A1 increased from 3 to 10% of the population. The two clones were sensitive to metalaxyl. Two new clones were detected in Belgium in 2016 at low frequency: 37_A2 and 39_A1. Lastly, the genetically diverse ‘Others’ samples decreased from 31 to 4% of the population. Clones 13_A2 and 1_A1 had virulence profiles more complex than clones 6_A1 and Others. |
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| Authors | César, V. |
