Abstracts
Abstract
Stripe rust, Puccinia striiformis f. sp. tritici, is one of the world’s most important diseases of wheat. In Canada, stripe rust is found mainly in the western provinces (British Columbia, Alberta and Saskatchewan) and, more recently, in the provinces of Manitoba and Ontario. Here, we report the first detection of stripe rust on wheat in the province of Quebec, Canada. Leaves showing yellowish sporulation arranged in narrow stripes were found in wheat performance trials at the research station of Université Laval, in Saint-Augustin-de-Desmaures. Morphological identification was confirmed by several PCR assays targeting specific genomic sequences and a rDNA gene segment (ITS2/28S).
Keywords:
- Stripe rust,
- Puccinia striiformis f. sp. tritici,
- wheat,
- Triticum aestivum
Résumé
La rouille jaune du blé, Puccinia striiformis f. sp. tritici, représente une des maladies du blé les plus importantes à travers le monde. Au Canada, la rouille jaune du blé se retrouve principalement dans les provinces de l’Ouest (Colombie-Britannique, Alberta et Saskatchewan) et, plus récemment, dans les provinces du Manitoba et de l’Ontario. Nous rapportons ici la première détection de la rouille jaune du blé dans la province de Québec, Canada. Des feuilles présentant des sporulations jaunâtres disposées en bandes étroites ont été retrouvées dans des essais de performance de blé à la station de recherche de l’Université Laval, à Saint-Augustin-de-Desmaures. Des analyses moléculaires ciblant des séquences génomiques spécifiques de même qu’un segment d’un gène d’ADNr (ITS2/28S) ont confirmé l’identification visuelle.
Mots-clés :
- rouille jaune,
- Puccinia striiformis f. sp. tritici,
- blé,
- Triticum aestivum
Appendices
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