A QTL for broad spectrum resistance to cyst nematode species (Globodera spp.) maps to a resistance gene cluster in potato.

J.N.A.M. Rouppe van der Voort, W. Lindeman, R. Folkertsma, R.C.B. Hutten, H. Overmars, E. van der Vossen, E. Jacobsen, J. Bakker

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70 Citations (Scopus)

Abstract

Broad-spectrum resistance in potato to the potato cyst nematode (PCN) species Globodera rostochiensis and G. pallida is commonly regarded as a polygenically inherited trait. Yet, by use of QTL analysis and a selected set of PCN populations, resistance to both PCN species could be ascribed to the action of locus Grp1. Grp1 confers major resistance to G. rostochiensis line Ro5-22 and G. pallida population Pa2-D383 and partial resistance to G. pallida population Pa3-Rookmaker. Grp1 was mapped on chromosome 5 using previously characterized AFLP markers. Cleaved amplified polymorphic sequence (CAPS) markers available for RFLP loci GP21 and GP179 revealed that Grp1 maps on a genomic region harboring other resistance factors to viral, fungal and nematodal pathogens. The present data indicate that Grp1 is a compound locus which contains multiple genes involved in PCN resistance.
Original languageEnglish
Pages (from-to)654-661
JournalTheoretical and Applied Genetics
Volume96
DOIs
Publication statusPublished - 1998

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