AI Article Synopsis
- Rapeseed is a super important plant used for its oil and has pretty petals that help attract bees and visitors.
- Scientists studied the petal shapes of rapeseed to understand how they grow and found 243 areas in the plant's genes that affect petal shape, including some new ones.
- They discovered that some plant hormones and proteins play a big role in how the petals look, and they identified 61 specific genes that could help in making new types of rapeseed with different petal shapes.
Article Abstract
Background: Rapeseed (Brassica napus L.) is one of the most important oil crops and a wildly cultivated horticultural crop. The petals of B. napus serve to protect the reproductive organs and attract pollinators and tourists. Understanding the genetic basis of petal morphology regulation is necessary for B. napus breeding.
Results: In the present study, the quantitative trait locus (QTL) analysis for six B. napus petal morphology parameters in a double haploid (DH) population was conducted across six microenvironments. A total of 243 QTLs and five QTL hotspots were observed, including 232 novel QTLs and three novel QTL hotspots. The spatiotemporal transcriptomic analysis of the diversiform petals was also conducted, which indicated that the expression of plant hormone metabolic and cytoskeletal binding protein genes was variant among diversiform petals.
Conclusions: The integration of QTL and RNA-seq analysis revealed that plant hormones (including cytokinin, auxin, and gibberellin) and cytoskeleton were key regulators of the petal morphology. Subsequently, 61 high-confidence candidate genes of petal morphology regulation were identified, including Bn.SAUR10, Bn.ARF18, Bn.KIR1, Bn.NGA2, Bn.PRF1, and Bn.VLN4. The current study provided novel QTLs and candidate genes for further breeding B. napus varieties with diversiform petals.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11264636 | PMC |
| http://dx.doi.org/10.1186/s13068-024-02551-z | DOI Listing |
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