ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2010
Quantitative resistance to late blight from Solanum berthaultii cosegregates with R(Pi-ber): insights in stability through isolates and environment.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 33 citations in OpenAlex.
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- Characterisation of the late blight resistance in potato differential MaR9 reveals a qualitative resistance gene, R9a, residing in a cluster of Tm-2 (2) homologs on chromosome IX.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2015Article
- A locus conferring effective late blight resistance in potato cultivar Sárpo Mira maps to chromosome XI.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2014Article
- Fine mapping of the Ph-3 gene conferring resistance to late blight (Phytophthora infestans) in tomato.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2013Article
- Gene profiling in partially resistant and susceptible near-isogenic tomatoes in response to late blight in the field.Molecular plant pathology · 2013Article
- Fractionation, stability, and isolate-specificity of QTL for resistance to Phytophthora infestans in cultivated tomato (Solanum lycopersicum).G3 (Bethesda, Md.) · 2012Article
- Conditional QTL underlying resistance to late blight in a diploid potato population.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2012Article
- Late blight resistance gene from Solanum ruiz-ceballosii is located on potato chromosome X and linked to violet flower colour.BMC genetics · 2012Article
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8 authors at 5 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Genetic resistance is a valuable tool in the fight against late blight of potatoes but little is known about the stability and specificity of quantitative resistance including the effect of defeated major resistance genes. In the present study we investigated the effect of different isolates of Phytophthora infestans on the mode of action of R(Pi-ber), an R-gene originating from Solanum berthaultii. The experiments were conducted on progenies derived from two reciprocal inter-specific backcrosses of Solanum tuberosum and S. berthaultii. The plant-pathogen interaction was tested in diverse environments including field, greenhouse and growth chamber conditions. The R(Pi-ber) gene provided complete resistance against a US8 isolate of P. infestans in all trials. When isolates compatible with R(Pi-ber) were used for inoculation, a smaller, but significant resistance effect was consistently detected in the same map position as the R-gene. This indicates that this R-gene provides a residual resistance effect, and/or that additional resistance loci are located in this genomic region of chromosome X. Additional quantitative resistance loci (QRL) were identified in the analyzed progenies. While some of the QRL (such as those near TG130 on chromosome III) were effective against several isolates of the pathogen, others were isolate specific. With a single exception, the S. berthaultii alleles were associated with a decrease in disease severity. Resistance loci reported in the present study co-locate with previously reported R-genes and QRL to P. infestans and other pathogens.
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