Segregation analysis and RFLP mapping of the R1 and R3 alleles conferring race-specific resistance to Phytophthora infestans in progeny of dihaploid potato parents

1994 ◽  
Vol 242 (6) ◽  
pp. 749-754 ◽  
Author(s):  
A. El-Kharbotly ◽  
C. Leonards-Schippers ◽  
D. J. Huigen ◽  
E. Jacobsen ◽  
A. Pereira ◽  
...  
Keyword(s):  
Phytophthora Infestans ◽  
Segregation Analysis ◽  
Specific Resistance ◽  
Rflp Mapping ◽  
Dihaploid Potato

R6 and R7 alleles of potato conferring race-specific resistance to Phytophthora infestans (Mont.) de Bary identified genetic loci clustering with the R3 locus on chromosome XI

1996 ◽  
Vol 92 (7) ◽  
pp. 880-884 ◽  
Author(s):  
A. El-Kharbotly ◽  
C. Palomino-S�nchez ◽  
F. Salamini ◽  
E. Jacobsen ◽  
C. Gebhardt
Keyword(s):  
Phytophthora Infestans ◽  
Specific Resistance ◽  
Genetic Loci

scholarly journals Expression of biotic stress response genes to Phytophthora infestans inoculation in White Lady, a potato cultivar with race-specific resistance to late blight

2016 ◽  
Vol 93 ◽  
pp. 22-28 ◽  
Author(s):  
Ramin Hajianfar ◽  
Balázs Kolics ◽  
István Cernák ◽  
István Wolf ◽  
Zsolt Polgár ◽  
...  
Keyword(s):  
Stress Response ◽  
Late Blight ◽  
Phytophthora Infestans ◽  
Biotic Stress ◽  
Specific Resistance ◽  
Potato Cultivar ◽  
Stress Response Genes ◽  
Biotic Stress Response

scholarly journals Mapping of resistance genes to races 1, 3 and 5 of Podosphaera xanthii in melon PI 414723

2013 ◽  
Vol 13 (4) ◽  
pp. 349-355 ◽  
Author(s):  
Ana Carolina Fazza ◽  
Leandro José Dallagnol ◽  
Ana Cristina Fazza ◽  
Carolina C. Monteiro ◽  
Bruno Marco de Lima ◽  
...  
Keyword(s):  
Linkage Group ◽  
Genetic Map ◽  
Resistance Genes ◽  
Segregation Analysis ◽  
Specific Resistance ◽  
Dominant Gene ◽  
Inheritance Of Resistance ◽  
Podosphaera Xanthii ◽  
Single Dominant Gene ◽  
First Time

The fungus Podosphaera xanthii affects melon crops and presents several races controlled by race-specific resistance genes. The accession PI 414723 is resistant to races 1, 3 and 5 and it is a suitable source of resistance genes. The inheritance of resistance to these races was analyzed on 87 F2 plants from the cross of PI 414723 × Védrantais, and resistance to all three races could be explained by the segregation of a single dominant gene, although a digenic model could also be accepted. A genetic map was assembled with 206 markers, and co-segregation analysis of resistance phenotypes indicated the existence of two linked loci in linkage group II, one conferring resistance to races 1 and 5 (denominated Pm-x1,5), and the second to race 3 (denominated Pm-x3), located 5.1 cM apart. This study reports for the first time the existence of Pm-x3 and the genetic locations of these resistance genes from PI 414723.

Race specific resistance against Phytophthora infestans in potato is controlled by more genetic factors than only R-genes

Euphytica ◽  
1996 ◽  
Vol 90 (3) ◽  
pp. 331-336 ◽  
Author(s):  
Ali El-Kharbotly ◽  
Andy Pereira ◽  
Willem J. Stiekema ◽  
Evert Jacobsen
Keyword(s):  
Phytophthora Infestans ◽  
Genetic Factors ◽  
Specific Resistance ◽  
R Genes

scholarly journals Quantitative resistance to Phytophthora infestans in potato: a case study for QTL mapping in an allogamous plant species.

Genetics ◽  
1994 ◽  
Vol 137 (1) ◽  
pp. 67-77 ◽  
Author(s):  
C Leonards-Schippers ◽  
W Gieffers ◽  
R Schäfer-Pregl ◽  
E Ritter ◽  
S J Knapp ◽  
...  
Keyword(s):  
Qtl Mapping ◽  
Phytophthora Infestans ◽  
Specific Resistance ◽  
Quantitative Resistance ◽  
Potato Virus X ◽  
Interval Mapping ◽  
Wild Potato Species ◽  
Resistance Response ◽  
Multiple Alleles ◽  
Specific Proteins

Abstract Phytophthora infestans is the most important fungal pathogen in the cultivated potato (Solanum tuberosum). Dominant, race-specific resistance alleles and quantitative resistance--the latter being more important for potato breeding--are found in the germplasm of cultivated and wild potato species. Quantitative trait loci (QTLs) for resistance to two races of P. infestans have been mapped in an F1 progeny of a cross between non-inbred diploid potato parents with multiple alleles. Interval mapping methods based on highly informative restriction fragment length polymorphism markers revealed 11 chromosome segments on 9 potato chromosomes showing significant contrasts between marker genotypic classes. Whereas phenotypically no difference in quantitative resistance response was observed between the two fungal races, QTL mapping identified at least one race specific QT locus. Two QT regions coincided with two small segments on chromosomes V and XII to which the dominant alleles R1, conferring race specific resistance to P. infestans, Rx1 and Rx2, both inducing extreme resistance to potato virus X, have been allocated in independent mapping experiments. Some minor QTLs were correlated with genetic loci for specific proteins related to pathogenesis, the expression of which is induced after infection with P. infestans.

R6 and R7 alleles of potato conferring race-specific resistance to Phytophthora infestans (Mont.) de Bary identified genetic loci clustering with the R3 locus on chromosome XI

1996 ◽  
Vol 92 (7) ◽  
pp. 880-884 ◽  
Author(s):  
A. El-Kharbotly ◽  
C. Palomino-Sánchez ◽  
F. Salamini ◽  
E. Jacobsen ◽  
C. Gebhardt
Keyword(s):  
Phytophthora Infestans ◽  
Specific Resistance ◽  
Genetic Loci
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