ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2020
Mapping the black spot resistance locus Rdr3 in the shrub rose 'George Vancouver' allows for the development of improved diagnostic markers for DNA-informed breeding.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2020. 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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Who cites it
10 citing papers in PubMed, 16 citations in OpenAlex.
- Review
- Exploring chromosomal variations in garden roses: Insights from high-density SNP array data and a new tool, Qploidy.The plant genome · 2025Article
- Comparative transcriptome and metabolome analysis revealed diversity in the response of resistant and susceptible rose (Frontiers in plant science · 2024Article
- Gene-flow investigation between garden and wild roses planted in close distance.Plant biotechnology (Tokyo, Japan) · 2023Article
- QTL discovery for resistance to black spot and cercospora leaf spot, and defoliation in two interconnected F1 bi-parental tetraploid garden rose populations.Frontiers in plant science · 2023Article
- Identification of QTLs for Reduced Susceptibility to Rose Rosette Disease in Diploid Roses.Pathogens (Basel, Switzerland) · 2022Article
- Rose Rosette Disease Resistance Loci Detected in Two Interconnected Tetraploid Garden Rose Populations.Frontiers in plant science · 2022Article
- QTL mapping and characterization of black spot disease resistance using two multi-parental diploid rose populations.Horticulture research · 2022Article
- Characterization of black spot resistance in diploid roses with QTL detection, meta-analysis and candidate-gene identification.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2020Article
- RosBREED: bridging the chasm between discovery and application to enable DNA-informed breeding in rosaceous crops.Horticulture research · 2020Review
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6 authors at 3 institutions in 1 country.
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Abstract
key messageRdr3 is a novel resistance gene of black spot in roses that maps to a chromosome 6 homolog. A new DNA test was developed and can be used to pyramid black spot resistance in roses. Diplocarpon rosae, the cause of rose black spot, is one of the most devastating foliar pathogens of cultivated roses (Rosa spp.). The primary method of disease control is fungicides, and they are viewed unfavorably by home gardeners due to potential environmental and health impacts. Planting rose cultivars with genetic resistance to black spot can reduce many of the fungicide applications needed in an integrated pest management system. To date, four resistance genes have been identified in roses (Rdr1, Rdr2, Rdr3, and Rdr4). Rdr3 was never mapped and is thought to be unique from Rdr1 and Rdr2. It is unknown whether it is an allele of Rdr4. To assess the novelty of Rdr3, a mapping population was created by crossing the Rdr3 containing cultivar George Vancouver with the susceptible cultivar Morden Blush. The mapping population was genotyped with the WagRhSNP 68 K Axiom array and mapped using the 'polymapR' package. Rdr3 was mapped to a chromosome 6 homolog confirming it is different from Rdr1 and Rdr2, found on chromosome 1, and from Rdr4, found on chromosome 5. The mapping information was used in conjunction with the Rosa chinensis genome assembly to develop new tightly linked SSRs for marker-assisted breeding. Three markers were able to predict the presence of Rdr3 in a 63-cultivar validation set. Additionally, 12 cultivars appear to have resistance genes other than Rdr3. The improved diagnostic markers will be a great asset to the rose-breeding community toward developing new black spot-resistant cultivars.
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