基因组的表观遗传修饰有助于记住植物采用的耐压策略
Suresh Kumar1, Trilochan Mohapatra2
1Division of Biochemistry, ICAR-Indian Agricultural Research Institute, 110012 New Delhi, India.
Frontiers in bioscience (Landmark edition)
|March 27, 2024
概括
表观遗传修饰,包括DNA甲基化和非编码RNAs,调节基因表达和真核生物的基因组结构. 植物表观遗传学通过压力记忆和适应能力为气候适应性作物提供了洞察力.
科学领域:
- 遗传学和分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 植物科学 植物科学
背景情况:
- 细胞遗传信息依赖于核过程和表观遗传修饰,如DNA甲基化,基因素修饰和非编码RNA (ncRNA) 生物发生.
- 受表观遗传变化影响的基因组架构决定了基因组功能,具有不同的染色质状态 (euchromatin,heterochromatin) 和基因的核定位突出了有组织的遗传信息.
- 基因表达调节不仅涉及DNA序列,还涉及基因修改,3D基因组定位和染色质循环,这对于对环境刺激的反应至关重要.
研究的目的:
- 探索表观遗传修饰在调节真核生物体中基因表达和基因组结构中的作用.
- 突出表观基因组学的最新进展,例如ncRNAs在DNA甲基化中的作用以及甲基化/脱甲基化平衡.
- 研究植物表观遗传学在理解压力记忆和适应能力方面的潜力,以开发适应气候的作物.
主要方法:
- 对真核细胞表观遗传机制的现有文献的综述.
- 对表观遗传修饰对基因组架构和基因表达的影响分析.
- 探索植物对环境刺激的特异性表观遗传反应.
主要成果:
- 表观遗传修饰是基因组架构和基因表达调节的关键驱动因素.
- 最近的发现包括ncRNAs在DNA甲基化中的参与以及识别平衡甲基化动态的蛋白质/序列.
- 植物利用各种机制,包括表观遗传变化,以应对环境变化,展示表观遗传应激记忆.
结论:
- 表观遗传修饰对于真核生物的基因调节和基因组组织至关重要.
- 表观基因组学的进步正在揭示复杂的调节网络.
- 研究植物表观遗传学对于提高作物的适应性和应对气候变化的弹性至关重要,可能通过 (epi) 基因组编辑.
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