Can we enhance durable resistance against Plasmopara halstedii [sunflower downy mildew]?

• Autorzy: Sakr N

Warianty tytułu

PL

Czy mozemy podniesc trwala odpornosc na Plasmopara halstedii [maczniak rzekomy slonecznika]?

• Języki publikacji: EN

Abstrakty

EN

Sunflower downy mildew caused by Plasmopara halstedii is one of the most potentially important diseases. So far, a complete, major gene resistance (Pl) has been used successfully, but with the appearance of eight races in France since 2000, research on more durable resistance was undertaken. In this study, we present new results concerning the evolution of pathogenicity of P. halstedii under conditions of re-enforced infection and different Pl gene selection pressures. Moreover, we imagine the evolution of virulence and aggressiveness of P. halstedii under a mixture model of sunflower inbred lines carrying the two types of resistance which may enhance durable resistance against it. Examples of host-parasite interactions including the influence of plant mixture models against pathogens are equally presented to understand how the pathogen develops its pathogenicicity.

PL

Mączniak rzekomy słonecznika wywoływany przez Plasmopara halstedii jest jedną z potencjalnie najważniejszych chorób. Dotychczas, z dobrym skutkiem, wykorzystywano całkowitą odporność uwarunkowaną genem głównym (Pl). Jednak od 2000 roku, wraz z pojawieniem się we Francji ośmiu nowych ras grzyba, podjęto badania nad znalezieniem trwalszej odporności. W pracy przedstawiono wyniki badania ewolucji patogeniczności P. halstedii w warunkach sztucznej infekcji, przy wykorzystaniu presji infekcyjnej różnych genów Pl. Poza tym symulowano ewolucję wirulencji i agresywności P. halstedii wykorzystując model uwzględniający mieszaniny linii wsobnych posiadających dwa typy odporności, które mogą przyczynić się do trwalszej odporności przeciw tej chorobie. W celu zrozumienia jak patogen rozwija patogeniczność, przedstawiono przykłady współdziałania patogena i rośliny, uwzględniając mieszaniny linii rośliny żywicielskiej.

Słowa kluczowe

EN

downy mildew; sunflower downy milder; Plasmopara halstedii; pathogen evolution; aggressiveness; plant disease

• Wydawca: -
• Czasopismo: Journal of Plant Protection Research
• Rocznik: 2010
• Tom: 50
• Numer: 1
• Opis fizyczny: p.15-21,ref.

Twórcy

autor

Sakr N

• INRA-UBP, UMR 1095, 234 Avenue du Brezet, 63100 Clermont-Ferrand, France

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