ArticleBMC plant biology2022
Comparative transcriptomic analysis reveals the molecular mechanism underlying seedling biomass heterosis in Brassica napus.
Article in BMC plant biology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed, 13 citations in OpenAlex.
- Using transcriptome analysis and QTL mapping to decipher the genetic basis of heterosis in potato root system.BMC plant biology · 2025Article
- Non-Additive Gene Expression in Carbon and Nitrogen Metabolism Drives Growth Heterosis in Populus deltoides.Plant, cell & environment · 2025Article
- Transcriptome Analysis Revealed the Paternal Importance to Vegetative Growth Heterosis inPlants (Basel, Switzerland) · 2024Article
- Article
- Comparative transcriptomic analysis reveals the molecular mechanism underlying seedling heterosis and its relationship with hybrid contemporary seeds DNA methylation in soybean.Frontiers in plant science · 2024Article
- Comparative transcriptome profiling reveals the multiple levels of crosstalk in phytohormone networks in Brassica napus.Plant biotechnology journal · 2023Article
- Overdominant expression of genes plays a key role in root growth of tobacco hybrids.Frontiers in plant science · 2023Article
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10 authors at 1 institution in 1 country.
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Abstract
backgroundHeterosis is an important biological phenomenon in which the hybrids exceed the parents in many traits. However, the molecular mechanism underlying seedling heterosis remains unclear.
resultsIn the present study, we analyzed the leaf transcriptomes of strong hybrids (AM, HM) and weak hybrids (CM, HW) and their parents (A, C, H, M, and W) at two periods. Phenotypically, hybrids had obvious biomass heterosis at the seedling stage, with statistically significant differences between the strong and weak hybrids. The transcriptomic analysis demonstrated that the number of differentially expressed genes (DEGs) between parents was the highest. Further analysis showed that most DEGs were biased toward parental expression. The biological processes of the two periods were significantly enriched in the plant hormone signal transduction and photosynthetic pathways. In the plant hormone signaling pathway, DEG expression was high in hybrids, with expression differences between strong and weak hybrids. In addition, DEGs related to cell size were identified. Similar changes were observed during photosynthesis. The enhanced leaf area of hybrids generated an increase in photosynthetic products, which was consistent with the phenotype of the biomass. Weighted gene co-expression network analysis of different hybrids and parents revealed that hub genes in vigorous hybrid were mainly enriched in the plant hormone signal transduction and regulation of plant hormones.
conclusionPlant hormone signaling and photosynthesis pathways, as well as differential expression of plant cell size-related genes, jointly regulate the dynamic changes between strong and weak hybrids and the generation of seedling-stage heterosis. This study may elucidate the molecular mechanism underlying early biomass heterosis and help enhance canola yield.
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