Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 507395
Title Exploiting natural variation in susceptibility of Arabidopsis thaliana to Meloidogyne incognita to breed broad-spectrum resistance to root-knot nematodes
Author(s) Warmerdam, S.; Schaik, C.C. van; Lozano Torres, J.L.; Finkers-Tomczak, A.M.; Sterken, M.G.; Bakker, J.; Goverse, A.; Smant, G.
Event 32nd Symposium European Society of Nematologist, Braga, 2016-08-28/2016-09-01
Department(s) Laboratory of Nematology
PE&RC
EPS
Publication type Abstract in scientific journal or proceedings
Publication year 2016
Keyword(s) Arabidopsis thaliana HAPMAP population, genome wide association mapping, parasitic nematode, plant-nematode interaction, susceptibility factors.
Abstract The root knot nematode Meloidogyne incognita is able to parasitize hundreds of plant species and is a major threat in nearly all vegetable-growing regions in the world. Current resistance is based on major dominant resistance (R) genes, which are frequently overcome by the occurrence of resistance-breaking races of M. incognita. Allelic variation in genetic loci associated with susceptibility to plant-parasitic nematodes within a single plant species has thus far not been used to breed durable broad-spectrum resistance in crops. We investigated the susceptibility of 350 different ecotypes of A. thaliana for the root-knot nematode M. incognita. A nine-fold difference in susceptibility to M. incognita was found between the most and the least susceptible ecotypes. This quantitative variation can be caused by polymorphic levels of gene transcripts, and by allelic variation within transcripts of essential susceptibility genes. We conducted a genome wide association mapping study to determine loci that contribute to susceptibility of A. thaliana to M. incognita. Genes underlying these loci were investigated with T-DNA insertion mutation analysis to confirm their effect on nematode susceptibility of A. thaliana. Our data indicate that allelic variation can be used to breed for broad-spectrum nematode resistance.
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