ArticleBMC plant biology2015
Seedling development traits in Brassica napus examined by gene expression analysis and association mapping.
Article in BMC plant biology, 2015. 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.
- Overdominance at the Gene Expression Level Plays a Critical Role in the Hybrid Root Growth ofInternational journal of molecular sciences · 2021Article
- Strong temporal dynamics of QTL action on plant growth progression revealed through high-throughput phenotyping in canola.Plant biotechnology journal · 2020Article
- DetectingG3 (Bethesda, Md.) · 2018Article
- Infestation byFrontiers in plant science · 2018Article
- A user guide to the Brassica 60K Illumina Infinium™ SNP genotyping array.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2017Review
- Novel SNP markers in InvGE and SssI genes are associated with natural variation of sugar contents and frying color in Solanum tuberosum Group Phureja.BMC genetics · 2017Article
- Joint genome-wide association and transcriptome sequencing reveals a complex polygenic network underlying hypocotyl elongation in rapeseed (Brassica napus L.).Scientific reports · 2017Article
- Identification of Candidate Genes for Calcium and Magnesium Accumulation inFrontiers in plant science · 2017Article
- Root morphology and seed and leaf ionomic traits in a Brassica napus L. diversity panel show wide phenotypic variation and are characteristic of crop habit.BMC plant biology · 2016Article
- Agronomic and Seed Quality Traits Dissected by Genome-Wide Association Mapping in Brassica napus.Frontiers in plant science · 2016Article
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Abstract
backgroundAn optimal seedling development of Brassica napus plants leads to a higher yield stability even under suboptimal growing conditions and has therefore a high importance for plant breeders. The objectives of our study were to (i) examine the expression levels of candidate genes in seedling leaves of B. napus and correlate these with seedling development as well as (ii) detect genome regions associated with gene expression levels and seedling development traits in B. napus by genome-wide association mapping.
resultsThe expression levels of the 15 candidate genes examined in the 509 B. napus inbreds showed an averaged standard deviation of 5.6 across all inbreds and ranged from 3.2 to 8.8. The gene expression differences between the 509 B. napus inbreds were more than adequate for the correlation with phenotypic variation of seedling development. The average of the absolute value correlations of the correlation coefficients of 0.11 were observed with a range from 0.00 to 0.39. The candidate genes GER1, AILP1, PECT, and FBP were strongly correlated with the seedling development traits. In a genome-wide association study, we detected a total of 63 associations between single nucleotide polymorphisms (SNPs) and the seedling development traits and 31 SNP-gene associations for the candidate genes with a P-value < 0.0001. For the projected leaf area traits we identified five different association hot spots on the chromosomes A2, A7, C3, C6, and C7.
conclusionA total of 99.4% of the adjacent SNPs on the A genome and 93.0% of the adjacent SNPs on the C genome had a distance smaller than the average range of linkage disequilibrium. Therefore, this genome-wide association study is expected to result on average in 14.7% of the possible power. Compared to previous studies in B. napus, the SNP marker density of our study is expected to provide a higher power to detect SNP-trait/-gene associations in the B. napus diversity set. The large number of associations detected for the examined 14 seedling development traits indicated that these are genetically complex inherited. The results of our analyses suggested that the studied genes ribulose 1,5-bisphosphate carboxylase/oxygenase small subunit (RBC) on the chromosomes A4 and C4 and fructose-1,6-bisphosphatase precursor (FBP) on the chromosomes A9 and C8 are cis-regulated.
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