ArticleBMC plant biology2025
Genome-wide association mapping reveals genetic loci underlying phenotypic variation in early root vigour improvement induced by osmopriming in Brassica napus L.
Article in BMC plant biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 2 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
2 citing papers in PubMed.
- Correction: Genome-wide association mapping reveals genetic loci underlying phenotypic variation in early root vigour improvement induced by osmopriming in Brassica napus L.BMC plant biology · 2026Article
- Development and Application of KASP Markers for Candidate Glucosinolate Biosynthesis Genes in Broccoli.International journal of molecular sciences · 2026Article
Corrections and comments
- Erratum issued
Authors and funding
4 authors.
Funding
Abstract
backgroundSeed osmopriming is an effective pre-sowing treatment that enhances early seedling vigour and promotes robust root development in Brassica napus L., thereby contributing to improved establishment during the early growth stages. However, the genetic basis of variation in osmopriming responsiveness remains poorly understood. This study employed genome-wide association studies (GWAS) using 15,311 single-nucleotide polymorphisms (SNPs) in 228 spring-type B. napus accessions to uncover loci associated with root vigour response to polyethylene glycol (PEG-6000)-mediated osmopriming.
resultsPEG-6000 osmopriming significantly enhanced root vigour traits, increasing average radicle emergence (RE) from 72.7% to 84.4%, root length (RL) by 64.6% (18.2 mm to 29.9 mm), root growth rate (RGR) by 97.8% (1.37 mm/h to 2.71 mm/h), and vigour index (VI) by 88.6% (1355 to 2556) after 72 h of sowing. We also observed substantial phenotypic variation in relative response (e.g., 99.69% CV for RR-VI), which highlights the diversity of osmopriming responsiveness within the population. Our GWAS analysis identified 11 significant SNPs across seven chromosomes (A03, A04, A07, C01, C02, C03, C08), associated with relative responses in four root vigour traits (RR-RE, RR-RL, RR-RGR, and RR-VI). Candidate genes within these loci include regulators of osmotic stress adaptation, water transport, root development, redox balance, and cell wall remodelling. Notably, haplotypes RR-RE-Hap6 on chromosome A03 and RR-VI-Hap1 on chromosome C02 were identified as favourable haplotypes for RR-RE and RR-VI, respectively.
conclusionOur study provides the first genomic dissection of osmopriming response in B. napus, identifying key loci and candidate genes associated with priming-enhanced root vigour. These findings highlight novel targets that could be leveraged in marker-assisted breeding to develop rapeseed cultivars with improved early root growth, which is crucial for robust seedling establishment.
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