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Diversity of oat crown rust (Puccinia coronata f.sp. avenae) isolates detected by virulence and AFLP analyses

Author

Listed:
  • Hana Klenová-Jiráková

    (Ministry of Environment of the Czech Republic, Prague, Czech Republic)

  • Leona Leišová-Svobodová

    (Division of Plant Genetics, Breeding and Product Quality, Crop Research Institute, Prague-Ruzyně, Czech Republic)

  • Alena Hanzalová

    (Division of Plant Genetics, Breeding and Product Quality, Crop Research Institute, Prague-Ruzyně, Czech Republic)

  • Ladislav Kučera

    (Division of Plant Genetics, Breeding and Product Quality, Crop Research Institute, Prague-Ruzyně, Czech Republic)

Abstract

Forty Puccinia coronata f.sp. avenae isolates from several European countries and Israel were tested for virulence to 18 differential oat lines. Amplified Fragment Length Polymorphism (AFLP) analysis was used to evaluate diversity among the studied isolates. Twenty-nine different pathotypes were identified. The prevailing occurrence of pathotypes with a limited number of virulence genes may indicate that oat cultivars grown in Europe possess the limited number of resistance genes. A total of 501 AFLP polymorphic fragments were scored in the studied isolates using twelve primer combinations. All isolates had the unique AFLP molecular pattern. The genetic similarity of isolates from Serbia. Austria and from the Czech Republic indicates that oat crown rust urediniospores may often migrate to particular areas. The number of virulence genes in isolates also seems to play an important role in the clustering. Most isolates possessing a lower number of virulence genes (0-4) were grouped into two clusters, whereas another cluster was composed of a majority of isolates with 4-7 virulence genes. A significant correlation relationship of 0.187 (P = 0.007) was found between AFLP and virulence/avirulence genes based on distance matrices.

Suggested Citation

  • Hana Klenová-Jiráková & Leona Leišová-Svobodová & Alena Hanzalová & Ladislav Kučera, 2010. "Diversity of oat crown rust (Puccinia coronata f.sp. avenae) isolates detected by virulence and AFLP analyses," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 46(3), pages 98-106.
    • Handle: RePEc:caa:jnlpps:v:46:y:2010:i:3:id:17-2009-pps
    DOI: 10.17221/17/2009-PPS
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    References listed on IDEAS

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    1. Hana Klenová & Josef Šebesta, 2006. "Inheritance and Efficiency of Crown Rust Resistancein the Line Pc 50-4 (Avena sterilis L.)," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 42(1), pages 9-14.
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    1. Hana Jiráková & Alena Hanzalová, 2008. "Crown rust pathotypes determined on oats in the Czech Republic from 2004 to 2006 and reaction to oat cultivars," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 44(2), pages 60-65.

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