ArticleBMC plant biology2021
Genetic variation for tolerance to the downy mildew pathogen Peronospora variabilis in genetic resources of quinoa (Chenopodium quinoa).
Article in BMC plant biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.
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Who cites it
22 citing papers in PubMed.
- Is quinoa-farming sustainable in marginal environments? Social, economical and environmental aspects.Journal of the science of food and agriculture · 2026Review
- Characterization and Agromorphological Variation in 27 Accessions ofPlants (Basel, Switzerland) · 2026Article
- A beta-tubulin-based qPCR assay for monitoring ofFrontiers in plant science · 2026Article
- Transcriptomic Profiling of Quinoa Reveals Distinct Defense Responses to Exogenous Methyl Jasmonate and Salicylic Acid.Plants (Basel, Switzerland) · 2025Article
- Genome assembly of a diversity panel of Chenopodium quinoa.Scientific data · 2024Article
- Unraveling Quinoa (Plants (Basel, Switzerland) · 2024Article
- Genome-wide association study, combined with bulk segregant analysis, identify plant receptors and defense related genes as candidate genes for downy mildew resistance in quinoa.BMC plant biology · 2024Article
- kGWASflow: a modular, flexible, and reproducible Snakemake workflow for k-mers-based GWAS.G3 (Bethesda, Md.) · 2023Article
- k-mer-based GWAS enhances the discovery of causal variants and candidate genes in soybean.The plant genome · 2023Article
- Combined reference-free and multi-reference based GWAS uncover cryptic variation underlying rapid adaptation in a fungal plant pathogen.PLoS pathogens · 2023Article
- Challenges and Perspectives for Integrating Quinoa into the Agri-Food System.Plants (Basel, Switzerland) · 2023Review
- Characterization ofJournal of fungi (Basel, Switzerland) · 2023Article
- New strategies to address world food security and elimination of malnutrition: future role of coarse cereals in human health.Frontiers in plant science · 2023Review
- Article
- Assessment of Phenotypic Diversity in the USDA Collection of Quinoa Links Genotypic Adaptation to Germplasm Origin.Plants (Basel, Switzerland) · 2022Article
- Multiple evolutionary origins of glyphosate resistance inEvolutionary applications · 2022Article
- Resequencing worldwide spinach germplasm for identification of field resistance QTLs to downy mildew and assessment of genomic selection methods.Horticulture research · 2022Article
- Genotype-Dependent Variation of Nutritional Quality-Related Traits in Quinoa Seeds.Plants (Basel, Switzerland) · 2021Article
- Quinoa Phenotyping Methodologies: An International Consensus.Plants (Basel, Switzerland) · 2021Review
- A Review ofPlants (Basel, Switzerland) · 2021Review
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8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundQuinoa (Chenopodium quinoa Willd.) is an ancient grain crop that is tolerant to abiotic stress and has favorable nutritional properties. Downy mildew is the main disease of quinoa and is caused by infections of the biotrophic oomycete Peronospora variabilis Gaüm. Since the disease causes major yield losses, identifying sources of downy mildew tolerance in genetic resources and understanding its genetic basis are important goals in quinoa breeding.
resultsWe infected 132 South American genotypes, three Danish cultivars and the weedy relative C. album with a single isolate of P. variabilis under greenhouse conditions and observed a large variation in disease traits like severity of infection, which ranged from 5 to 83%. Linear mixed models revealed a significant effect of genotypes on disease traits with high heritabilities (0.72 to 0.81). Factors like altitude at site of origin or seed saponin content did not correlate with mildew tolerance, but stomatal width was weakly correlated with severity of infection. Despite the strong genotypic effects on mildew tolerance, genome-wide association mapping with 88 genotypes failed to identify significant marker-trait associations indicating a polygenic architecture of mildew tolerance.
conclusionsThe strong genetic effects on mildew tolerance allow to identify genetic resources, which are valuable sources of resistance in future quinoa breeding.
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