Morphological, histological and transcriptomic mechanisms underlying different fruit shapes in Capsicum spp
Yixin Wang1,2, Shijie Ma1,2, Xiaomeng Cao1,2
1College of Horticulture, China Agricultural University, Beijing, China.
Peerj
|October 4, 2024
Summary
Pepper fruit shape is determined by cell division and expansion during development, with anthesis being a critical stage. Specific gene pathways like OFP-TRM and IQD-CaM influence slender fruit, while CYP735A1 impacts ovary wall thickness.
Area of Science:
- Plant biology
- Developmental genetics
- Agricultural science
Background:
- Pepper (Capsicum spp.) exhibits significant fruit shape diversity due to its long domestication.
- Understanding pepper fruit development mechanisms is crucial for plant organ morphogenesis research.
Purpose of the Study:
- Investigate the morphological, histological, and transcriptional factors governing diverse pepper fruit shapes.
- Identify key developmental stages and molecular pathways regulating fruit shape determination.
Main Methods:
- Morphological and histological analyses of pepper accessions with five distinct fruit shapes.
- Transcriptional profiling to identify gene expression patterns associated with shape variations.
Main Results:
- Pepper fruit shape is determined by developmental processes before and after anthesis, with anthesis being critical.
- Ovary shape variation is linked to cell number, while fruit shape variation involves cell division and expansion.
- Specific pathways (OFP-TRM, IQD-CaM) and genes (CYP735A1) are implicated in slender fruit shape and ovary wall thickness.
Conclusions:
- Pepper fruit shape is a complex trait regulated by cell dynamics and specific molecular pathways during development.
- Insights into pepper fruit development can inform future breeding strategies and genetic studies.
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