在纸张冷应力下进行替代拼接
Zhipeng Yu1, Xia Huang1, Shuhan Wen1
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.
Plants (Basel, Switzerland)
|December 9, 2023
概括
纸通过改变基因拼接来适应寒冷. 寒冷压力引发了显著的替代拼接 (AS) 事件,影响了新陈代谢和昼夜节律,表明了对寒冷耐受性的协调基因调节.
科学领域:
- 植物分子生物学 植物分子生物学
- 基因组学就是基因组学.
- 压力生理学 压力生理学
背景情况:
- 纸 (Broussonetia papyrifera) 是一种被广泛种植的木质植物.
- 了解植物的寒冷适应机制对于农业和生态至关重要.
- 替代拼接 (AS) 是基因表达的一个关键调节机制.
研究的目的:
- 研究替代拼接 (AS) 在纸对寒冷压力的反应中的作用.
- 确定受寒冷诱导AS影响的基因和途径.
- 在寒冷条件下探索AS的监管机制.
主要方法:
- 纸木木苗的冷处理.
- RNA测序以确定替代拼接事件.
- 生物信息分析检测差异性AS和基因表达.
- 拼接因子和DNA甲基化模式的分析.
主要成果:
- 在冷处理过程中检测到大量的替代拼接 (AS) 事件,其中替代3'拼接位 (A3) 是最常见的.
- 不同拼接的基因被丰富了粉和糖代谢和昼夜节律通路.
- 差异拼接基因的很大一部分也表现出差异表达,表明协调调节.
- 确定了41种富含氨酸/氨酸 (SR) 的拼接因子,其中许多显示差异表达或AS.
- 与非AS基因相比,AS基因在寒冷压力下表现出更高的DNA甲基化水平.
结论:
- 替代拼接在纸的寒冷适应中起着重要作用.
- 对AS和基因表达的协调调节对于适应寒冷压力至关重要.
- 在冷应力下,DNA甲基化可能参与调节AS.
- 这项研究提供了关于植物耐寒性分子机制的见解.
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