Inheritance of virulence of Puccinia recondita culture X43

Statler, G. D.; Jin, Ye

doi:10.1080/07060669109500962

Cited by 10 publications

(17 citation statements)

References 14 publications

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“…However, exceptions to this hypothesis also have been reported (Haggag et al 1973;Statler 1977;Statler and Jin 1991). Explanations of these exceptions should increase the current concepts of host parasite genetics.…”

Section: Introductionmentioning

confidence: 79%

“…Inheritance studies with P. triticina have generally supported the gene-for-gene hypothesis of numerical equivalence between genes for resistance in the host and corresponding genes for virulence in the pathogen (Flor 1971;Statler and Jin 1991). However, exceptions to this hypothesis also have been reported (Haggag et al 1973;Statler 1977;Statler and Jin 1991).…”

Section: Introductionmentioning

confidence: 88%

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Inheritance of virulence ofPuccinia triticinaculture X47, the F1 of the cross 71-112 x 70-1

Statler¹

2000

Canadian Journal of Plant Pathology

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Cultures 71-112 (SBD) and 70-1 (BBG) of Puccinia triticina were purified, crossed, and the resulting F, culture X47 (LBB) was selfed to study the inheritance of virulence on several near-isogenic lines of Triticum aestiviw. The phenotype of the parents, the F,, and ratios of F 2 progeny were used to explain the inheritance of pathogenicity, Results of the F 2 segregation from the reciprocal cross (70-1 x 71-112), labeled X59 (CBB), were compared to results of the current study. The F 2 cultures in this study segregated as if single dominant genes conditioned avirulence on near-isogenic lines with Lr2a, Lr2c, LrlO, Lrl 7, Lr28, Lr29, and Lr33. The avirulence genes were independently inherited. Linkage was detected between pathogen genes p2a and p2c with p29. Two genes appeared to control virulence on near-isogenic lines with Lr3, Lr3c, Lrl I, Lrl6, Lr21, Lr26, and Lr30. The F 2 ratios could be explained by classical gene-for-gene interactions except for the digenic ratios, which may indicate a more complex interaction.Résumé : Les cultures 71-112 (SBD) et 70-1 (BBG) du Puccinia triticina furent purifiées, croisées et la culture Fl resultante, X47 (LBB), fut autofécondée pour étudier la transmission de la virulence sur plusieurs lignées quasiisogéniques du Triticum aestivum. Le phénotype des parents, les F, et les ratios de segregation de la descendance en F 2 ont été employés pour expliquer la transmission de la pathogénicité. Les résultats de la segregation en F 2 des croisements réciproques (70-1 x 71-112), étiquetés X59 (CBB), furent compares aux résultats de la présente étude. La segregation des cultures en F 2 dans cette étude s'est faite comme si les gènes dominants simples avaient conditionné l'avirulence des lignées quasi-isogéniques avec Lr2a, Lr2c, LrlO, Lrl7, Lr28, Lr29 et Lr33. Les gènes d'avirulence furent hérités de facon indépendante. Une liaison génétique fut détectée entre les gènes p2a et p2c de l'agent pathogène dans p29. Deux gènes semblaient contröler la virulence sur les lignées quasi-isogéniques avec Lr3, Lr3c, Lrl 1, Lr 16, Lr21, Lr26 et Lr30. Les ratios de segregation de la F 2 pouvaient être expliqués par des interactions classiques gêne pour gêne, excepté pour les taux digéniques, ce qui peut être l'indication d'une interaction plus complexe,

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Section: Introductionmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 88%

Inheritance of virulence ofPuccinia triticinaculture X47, the F1 of the cross 71-112 x 70-1

Statler¹

2000

Canadian Journal of Plant Pathology

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“…These loci had previously been hypothesized to be linked (Samborski & Dyck, 1976;Statler, 1977). Virulences to Lr3 and Lrl4a appeared to be linked in the eastern aecial population, however, the genes assorted independently in the prairie aecial population (Table 3).…”

Section: Garnet/c Phase Disequilibriamentioning

confidence: 95%

“…recondita (Samborski & Dyck, 1986, 1976Statler, 1977;Statler & Jones, 1981). It is difficult, however to reach any general conclusion regarding the prevalence of heterozygosity from these studies because relatively few isolates, which were not necessarily representativç of the P. recondita population, were examined.…”

Section: Discussionmentioning

confidence: 99%

“…Statistical significance of frequency differences was tested with the G-test (Sokal & Rohlf, 1981). Estimates of allele frequencies in the aecial populations at each virulence locus were calculated assuming that virulence was recessive (Samborski & Dyck, 1968, 1976Statler, 1977), except for virulence to Lr3,which had been shown to be dominant in certain isolates (Samborski & Dyck, 1968). The aecial populations were assumed to be in Hardy-Weinberg equilibrium.…”

Section: Analysis Of Virulence In Uredinial and Aecial Generationsmentioning

confidence: 99%

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Virulence heterozygosity and gametic phase disequilibria in two populations of Puccinia recondita (wheat leaf rust fungus)

Kolmer

1992

Heredity

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Random mating aecial populations were derived from the eastern and prairie uredinial populations of Puccini recondita f. sp. tritici in Canada to assess the degree of virulence heterozygosity and gametic phase disequilibria between virulence loci in the two populations. In the aecial generation, both populations were genetically polymorphic at virulence loci that had low levels of phenotypic polymorphism in the uredinial generation. Different levels of genetic polymorphism for virulence allowed further discrimination between the two populations. High levels of virulence heterozygosity were detected in both populations to resistance genes originally derived from Triticum aestivum. Genetic linkage, and gametic phase disequilibria between genetically independent virulence loci were detected in both populations: However, disequilibrium were stronger and more prevalent in the highly selected prairie population.

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Sexual structures and recombination of the wheat rust fungus Puccinia striiformis on Berberis vulgaris

Rodríguez-Algaba

Wälter

Sørensen

et al. 2014

Fungal Genetics and Biology

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Inheritance of virulence of Puccinia recondita culture X43

Cited by 10 publications

References 14 publications

Inheritance of virulence ofPuccinia triticinaculture X47, the F1 of the cross 71-112 x 70-1

Inheritance of virulence ofPuccinia triticinaculture X47, the F1 of the cross 71-112 x 70-1

Virulence heterozygosity and gametic phase disequilibria in two populations of Puccinia recondita (wheat leaf rust fungus)

Sexual structures and recombination of the wheat rust fungus Puccinia striiformis on Berberis vulgaris

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