Progress in Mapping and Cloning Qualitative and Quantitative Resistance Against <Emphasis Type="Italic">Phytophthora infestans</Emphasis> in Potato and Its Wild Relatives |
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Authors: | Ingo Hein Paul R J Birch Sarah Danan Véronique Lefebvre Damaris Achieng Odeny Christiane Gebhardt Friederike Trognitz Glenn J Bryan |
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Institution: | 1.Genetics Programme,Scottish Crop Research Institute (SCRI),Dundee,UK;2.Plant Pathology,Scottish Crop Research Institute (SCRI),Dundee,UK;3.Institut National de la Recherche Agronomique,INRA UR 1052 GAFL Génétique et Amélioration des Fruits et Légumes,Montfavet,France;4.Max Planck Institute for Plant Breeding Research,K?ln,Germany;5.Bioresources Department,Austrian Research Centers GmbH—ARC,Seibersdorf,Austria |
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Abstract: | Cultivated potato is susceptible to many pests and pathogens, none of which is more of a threat to potato agriculture than
the late blight disease, caused by the oomycete Phytophthora infestans (Mont.) de Bary. To date all efforts to thwart this most adaptive of pathogens have failed, and early attempts to deploy
‘R genes’ introgressed from the wild Mexican hexaploid Solanum demissum ended in abject failure. With the advent of facile gene mapping and cloning, allied to knowledge of plant resistance gene
structure, renewed efforts are leading to mapping and isolation of new sources of late blight resistance in potato wild species,
many of which are being performed under the auspices of the BIOEXPLOIT project (Sub-project 2). We document recent advances
in late blight resistance gene mapping and isolation, and postulate how these genes, allied to knowledge of pathogen effectors
and their recognition specificity, may greatly enhance our chances of halting the progress of late blight disease in potato
crops worldwide. |
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Keywords: | Cloning Gene mapping Late blight Pathogen effectors Recognition specificity Resistance breeding Solanum tuberosum Wild potato |
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