在移植的Hevea brasiliensis中重新编程DNA甲基化和基因表达的变化
Hui-Liang Li1,2,3, Ying Wang1, Dong Guo1,2
1Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences and Key Laboratory for Biology and Genetic Resources of Hainan Province, Hainan Academy of Tropical Agricultural Resource, Haikou, Hainan, China.
Frontiers in plant science
|July 9, 2024
概括
接种树 (Hevea brasiliensis) 会改变DNA甲基化,导致显著的基因表达变化和克隆内变异. 这项研究揭示了商业种植中这些变化背后的分子机制.
科学领域:
- 植物分子生物学 植物分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 农业科学 农业科学
背景情况:
- 商业树 (Hevea brasiliensis) 的繁殖依赖于芽移植.
- 在移植克隆中观察到显著的克隆内变异,影响产量和质量.
- 人们假设表观遗传修饰,特别是DNA甲基化,有助于这些变异.
研究的目的:
- 研究与它们的供体植物 (DPs) 相比,在接种树 (GPs) 中的全基因组DNA甲基化概况.
- 识别与移植相关的差异甲基基因 (DMG) 和差异表达基因 (DEG).
- 为了阐明植入树的细胞内变异背后的分子机制.
主要方法:
- 全基因组双硫酸盐测序被用来分析全科医生和临床医生的DNA甲基化模式.
- 不同甲基化分析确定了5939个DMG.
- 转录分析确定了9,798个DEG,其中1,698个DMG和DEG之间的重叠基因.
主要成果:
- 移植诱导了树中的DNA甲基化重编程,并观察到整体下调.
- 在全科医生中,特定的CG,CHG和CHH甲基化模式发生了变化.
- 重叠的DMG和DEG在代谢途径和二次代谢物生物合成中得到了显著的丰富.
结论:
- 基因甲基化重编程与植入树中的基因表达变化相关.
- 这项研究为树提供了全面的全基因组甲基组.
- 这些发现为商业树繁殖中的克隆内变异的表观遗传基础提供了见解.
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