ArticleBMC plant biology2016
Single and multiple resistance QTL delay symptom appearance and slow down root colonization by Aphanomyces euteiches in pea near isogenic lines.
Article in BMC plant biology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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11 citing papers in PubMed, 37 citations in OpenAlex.
- Transcriptomic analysis identifies candidate genes for Aphanomyces root rot disease resistance in pea.BMC plant biology · 2024Article
- A fine-tuned defense at the pea root caps: Involvement of border cells and arabinogalactan proteins against soilborne diseases.Frontiers in plant science · 2023Review
- Advanced backcross QTL analysis and comparative mapping with RIL QTL studies and GWAS provide an overview of QTL and marker haplotype diversity for resistance to Aphanomyces root rot in pea (Frontiers in plant science · 2023Article
- Evaluation of pea genotype PI180693 partial resistance towards aphanomyces root rot in commercial pea breeding.Frontiers in plant science · 2023Article
- Fruit Morphology and Ripening-Related QTLs in a Newly Developed Introgression Line Collection of the Elite Varieties 'Védrantais' and 'Piel de Sapo'.Plants (Basel, Switzerland) · 2022Article
- A Comprehensive Assessment of the Secretome Responsible for Host Adaptation of the Legume Root PathogenJournal of fungi (Basel, Switzerland) · 2022Article
- Modulating climacteric intensity in melon through QTL stacking.Horticulture research · 2022Article
- Genomics Enabled Breeding Strategies for Major Biotic Stresses in Pea (Frontiers in plant science · 2022Review
- Genomics of Plant Disease Resistance in Legumes.Frontiers in plant science · 2019Review
- Genetic and Pathogenicity Diversity ofFrontiers in plant science · 2018Article
- Quantitative Resistance to Plant Pathogens in Pyramiding Strategies for Durable Crop Protection.Frontiers in plant science · 2017Review
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Authors and funding
7 authors at 5 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundUnderstanding the effects of resistance QTL on pathogen development cycle is an important issue for the creation of QTL combination strategies to durably increase disease resistance in plants. The oomycete pathogen Aphanomyces euteiches, causing root rot disease, is one of the major factors limiting the pea crop in the main producing countries. No commercial resistant varieties are currently available in Europe. Resistance alleles at seven main QTL were recently identified and introgressed into pea agronomic lines, resulting in the creation of Near Isogenic Lines (NILs) at the QTL. This study aimed to determine the effect of main A. euteiches resistance QTL in NILs on different steps of the pathogen life cycle.
resultsNILs carrying resistance alleles at main QTL in susceptible genetic backgrounds were evaluated in a destructive test under controlled conditions. The development of root rot disease severity and pathogen DNA levels in the roots was measured during ten days after inoculation. Significant effects of several resistance alleles at the two major QTL Ae-Ps7.6 and Ae-Ps4.5 were observed on symptom appearance and root colonization by A. euteiches. Some resistance alleles at three other minor-effect QTL (Ae-Ps2.2, Ae-Ps3.1 and Ae-Ps5.1) significantly decreased root colonization. The combination of resistance alleles at two or three QTL including the major QTL Ae-Ps7.6 (Ae-Ps5.1/Ae-Ps7.6 or Ae-Ps2.2/Ae-Ps3.1/Ae-Ps7.6) had an increased effect on delaying symptom appearance and/or slowing down root colonization by A. euteiches and on plant resistance levels, compared to the effects of individual or no resistance alleles.
conclusionsThis study demonstrated the effects of single or multiple resistance QTL on delaying symptom appearance and/or slowing down colonization by A. euteiches in pea roots, using original plant material and a precise pathogen quantification method. Our findings suggest that single resistance QTL can act on multiple or specific steps of the disease development cycle and that their actions could be pyramided to increase partial resistance in future pea varieties. Further studies are needed to investigate QTL effects on different steps of the pathogen life cycle, as well as the efficiency and durability of pyramiding strategies using QTL which appear to act on the same stage of the pathogen cycle.
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