Mapping genetic factors controlling potato - cyst nematode interactions

J.N.A.M. Rouppe van der Voort

Research output: Thesisinternal PhD, WU

Abstract

<p>The thesis describes strategies for genetic mapping of the genomes of the potato cyst nematode and potato. Mapping in cyst nematodes was achieved by AFLP genotyping of single cysts and subsequent segregation analysis in a family of sibling populations. The genetic map of <em>Globodera rostochiensis</em> comprises nine linkage groups, a number similar to the haploid chromosome number determined. The low kb/cM ratio suggests that map based cloning of (a)virulence genes may be feasible for this organism.</p><p>For potato, a mapping strategy based on catalogued, chromosome-specific AFLP markers facilitated the mapping of the nematode resistance loci <em>Gpa2</em> and <em>Grp1</em> . <em>Gpa2</em> confers specific resistance to <em>G. pallida</em> and is tightly linked to a virus resistance on potato chromosome <em>12</em> . Locus <em>Grp1</em> is identified by QTL mapping. It confers resistance to <em>G. rostochiensis</em> pathotype Ro <sub>5</sub> , partial resistance to <em>G. pallida</em> and maps on chromosome <em>5</em> . The spectra of nematode resistance loci and their positions on the potato genome suggest that these genes are involved in gene-for-gene interactions.</p>
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
Supervisors/Advisors
  • Bakker, Jaap, Promotor
  • Gommers, F.J., Promotor, External person
Award date15 Sep 1998
Place of PublicationS.l.
Publisher
Print ISBNs9789054858997
Publication statusPublished - 1998

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Keywords

  • plant parasitic nematodes
  • gene mapping
  • heteroderidae
  • globodera
  • potatoes
  • disease resistance
  • theses

Cite this

Rouppe van der Voort, J. N. A. M. (1998). Mapping genetic factors controlling potato - cyst nematode interactions. S.l.: Rouppe van der Rouppe voort.