Cyclophilin: a downy mildew resistance gene candidate in grapevine

Zugehörigkeit
Unit of Molecular Biology and Plant Biotechnology, Centre for Biodiversity, Functional & Integrative Genomics, Science Faculty ofLisbon, Campo Grande, Lisbon
Figueiredo, A.;
Zugehörigkeit
Unit of Molecular Biology and Plant Biotechnology, Centre for Biodiversity, Functional & Integrative Genomics, Science Faculty ofLisbon, Campo Grande, Lisbon
Monteiro, F.;
Zugehörigkeit
Unit of Molecular Biology and Plant Biotechnology, Centre for Biodiversity, Functional & Integrative Genomics, Science Faculty ofLisbon, Campo Grande, Lisbon
Fortes, A. M.;
Zugehörigkeit
Unit of Molecular Biology and Plant Biotechnology, Centre for Biodiversity, Functional & Integrative Genomics, Science Faculty ofLisbon, Campo Grande, Lisbon
Pais, M. S.;
GND
1026440017
Zugehörigkeit
Julius Kühn-Institute (JKI), Federal Research Centre for Cultivated Plants, Institute for Grapevine Breeding, Siebeldingen, Germany
Rex, Friederike;
GND
1059151928
Zugehörigkeit
Julius Kühn-Institute (JKI), Federal Research Centre for Cultivated Plants, Institute for Grapevine Breeding, Siebeldingen, Germany
Töpfer, Reinhard;
GND
1059152029
Zugehörigkeit
Julius Kühn-Institute (JKI), Federal Research Centre for Cultivated Plants, Institute for Grapevine Breeding, Siebeldingen, Germany
Zyprian, Eva

Plasmopara viticola is the pathogen responsible for one of the most important diseases in viticulture. Vitis vinifera cultivars show almost no resistance to this pathogen except some new cultivars like ‘Regent’, which achieved resistance through introgression. The molecular mechanisms of resistance are still unknown. A cyclophilin cDNA, denoted as VviCyP was isolated in grapevine. Real time PCR analysis was used to evaluate VviCyP mRNA accumulation at several time-points (0 h, 6 hpi, 12 hpi, 18 hpi, 24 hpi and 48 hpi) following infection. The field resistant cultivar ‘Regent’ accumulates more VviCyP transcripts at early time-points (0 h, 6 hpi and 12 hpi) whereas the sensitive cultivar ‘Trincadeira’ only accumulates it after the 18 hpi time-point. These results suggest that VviCyP may play an important role in the ‘Regent’ defence mechanism and that ‘Regent’ resistance capabilities are probably due to a faster perception and activation of the defence mechanism upon infection with the downy mildew pathogen.

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