Drosophila resistance genes to parasitoids: chromosomal location and linkage analysis.
Insect hosts can survive infection by parasitoids using the encapsulation phenomenon. In Drosophila melanogaster the abilities to encapsulate the wasp species Leptopilina boulardi and Asobara tabida each involve one major gene. Both resistance genes have been precisely localized on the second chromosome, 35 centimorgans apart. This result clearly demonstrates the involvement of at least two separate genetic systems in Drosophila resistance to parasitoid wasps. The resistance genes to L. boulardi and A. tabida are not clustered as opposed to many plant resistance genes to pathogens cloned to date.
Poirie
M
M
Institut de Recherche sur la Biologie de l'Insecte, UIPRESA 6035, Université F. Rabelais, Parc Grandmont, Tours, France. poirie@univ-tours.fr
Frey
F
F
Hita
M
M
Huguet
E
E
Lemeunier
F
F
Periquet
G
G
Carton
Y
Y
D000818:Animals; D002874:Chromosome Mapping; D002875:Chromosomes; D004331:Drosophila melanogaster / Q000235:genetics* / Q000469:parasitology; D017344:Genes, Insect; D008040:Genetic Linkage; D011995:Recombination, Genetic; D014863:Wasps / Q000502:physiology*