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Alternative Splicing during Fiber Development in G. hirsutum.
Jing Zheng1, Shuhan Wen1, Zhipeng Yu1
1The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A&F University, Linan, Hangzhou 311300, China.
International Journal of Molecular Sciences
|July 29, 2023
Summary
Alternative splicing (AS) regulates cotton fiber development, with many genes undergoing AS during fiber formation. DNA methylation, particularly gene body methylation, appears crucial for efficient AS in cotton.
Area of Science:
- Plant Biology
- Molecular Biology
- Genetics
Background:
- Cotton fiber is a model for cell differentiation.
- Alternative splicing (AS) is vital for plant growth but poorly understood in cotton fiber development.
Purpose of the Study:
- Investigate AS during cotton fiber formation.
- Identify AS patterns and regulatory mechanisms in *Gossypium hirsutum*.
Main Methods:
- Analyzed gene expression and alternative splicing events during cotton fiber development.
- Examined regulatory elements (cis and trans) and DNA methylation patterns.
Main Results:
- 23.31% of *Gossypium hirsutum* genes showed AS during fiber formation.
- AS prevalence varied by developmental stage and tissue (fiber initiation, ovule).
- Stage-specific AS was observed in fiber development genes, regulated by splicing factors, gene structure, and DNA methylation.
Conclusions:
- Alternative splicing plays a significant role in regulating cotton fiber development.
- DNA methylation, especially gene body methylation, is implicated in controlling AS efficiency.
- Findings provide insights into AS roles and regulation during cotton fiber growth.
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