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Molecular approaches to blast and brown spot in rice (Oryza sativa L.) of Nortern Italy

Piotti Eleonora, Rodino Doriana, Rigano M.M., Rodolfi M., Castiglione S., Biloni Massimo, Picco A.M., Sala Francesco. 2002. Molecular approaches to blast and brown spot in rice (Oryza sativa L.) of Nortern Italy. In : Rice genetic resources and breeding for Europe and other temperate areas : proceedings of Eurorice 2001 Symposium, Cirad, Ird, Ksau, Krasnodar Territory, Vniirisa, September, 3-8, 2001, Krasnodar, Russia. CIRAD, IRD, KSAU, Krasnodar. Montpellier : CIRAD ISBN 2-87614-504-9 Eurorice 2001 Symposium, Krasnodar, Russie, 3 September 2001/8 September 2001.

Paper with proceedings
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Abstract : Blast, caused by Pyricularia grisea, is one of the most widespread and serious diseases of rice. The fungus is highly variable with respect to its infectivity. In order to define the Italian P. grisea population with respect to this variability, 45 different strains were analysed using rep-PCR (repetitive-element-based polymerase chain reaction). Statistical analysis of the results allowed the identification of 9 different lineages. Symptoms of brown spot (caused by Bipolaris oryzae), another disease of worldwide occurrence, are frequently mistaken with those of blast infection. PCR-based methods to distinguish brown spot from rice blast disease were developed. Preventive spraying with fungicides against blast is widely practiced in Italy; the use of these molecular methods to distinguish between the two diseases could lead to a more rational use of chemicals. (Résumé d'auteur)

Mots-clés Agrovoc : Oryza sativa, Maladie des plantes, Pyricularia, Variation génétique, Bipolaris, Identification, Maladie fongique, PCR, Diagnostic

Mots-clés géographiques Agrovoc : Italie

Mots-clés complémentaires : Blast, Pyricularia grisea

Classification Agris : H20 - Plant diseases

Auteurs et affiliations

  • Piotti Eleonora, Università degli studi di Milano (ITA)
  • Rodino Doriana, Universita di Pavia (ITA)
  • Rigano M.M., Università degli studi di Milano (ITA)
  • Rodolfi M., Universita di Pavia (ITA)
  • Castiglione S., Università degli studi di Milano (ITA)
  • Biloni Massimo, Ente Nazionale Risi (ITA)
  • Picco A.M., Universita di Pavia (ITA)
  • Sala Francesco, Università degli studi di Milano (ITA)

Autres liens de la publication

Source : Cirad - Agritrop (https://agritrop.cirad.fr/510152/)

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