High-resolution genetic map of the Lv resistance locus in tomato

Bulked segregant analysis and high-resolution mapping were used to pinpoint the position of the Lv gene for resistance to Leveillula taurica in tomato. Mapping in an F2, corresponding to more than 3800 gametes, indicates that Lv is positioned within the 0.84-cM interval defined by the RFLP markers C...

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Veröffentlicht in:	Theoretical and applied genetics 1997-07, Vol.95 (1/2), p.220-223
Hauptverfasser:	Chunwongse, J, Doganlar, S, Crossman, C, Jiang, J, Tanksley, S.D
Format:	Artikel
Sprache:	eng
Schlagworte:	Biological and medical sciences chromosome mapping Classical genetics, quantitative genetics, hybrids disease resistance Diseases and pests Fundamental and applied biological sciences. Psychology genes Genetic aspects genetic markers genetic resistance Genetics of eukaryotes. Biological and molecular evolution Genomics Health aspects Host-parasite relationships Leveillula taurica linkage (genetics) loci lv gene lv locus Lycopersicon esculentum Pathogenic microorganisms Physiological aspects Plant genetics Plant immunology Pteridophyta, spermatophyta random amplified polymorphic DNA technique restriction fragment length polymorphism Solanum lycopersicum var. lycopersicum Tomatoes Vegetals
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Zusammenfassung:	Bulked segregant analysis and high-resolution mapping were used to pinpoint the position of the Lv gene for resistance to Leveillula taurica in tomato. Mapping in an F2, corresponding to more than 3800 gametes, indicates that Lv is positioned within the 0.84-cM interval defined by the RFLP markers CT121 and CT129, with the closest marker, CT121, being only 0.16 cM from the gene. The tight linkage of these markers demonstrates their usefulness in marker-assisted breeding for Lv, and the high-resolution map provides a starting a starting point for positional cloning of this resistance gene.
ISSN:	0040-5752 1432-2242
DOI:	10.1007/s001220050551