在日本和印加大米之间的全基因组DNA甲基化差异化
Tao Yan1,2, Liuhui Kuang1,2, Fei Gao1,2
1College of Agronomy, Hunan Agricultural University, Changsha, 410128, China.
The Plant journal : for cell and molecular biology
|January 31, 2025
概括
日本大米和印加大米的亚种在全基因组DNA甲基化,基因表达和新陈代谢方面有所不同. 印加大米的甲基化程度较低,影响碳水化合物和氨基酸通路,这对养和改善大米至关重要.
科学领域:
- 植物遗传学 植物遗传学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 代谢学 代谢学 代谢学
背景情况:
- 子亚种 japonica 和 indica 呈现出明显的遗传和形态差异.
- 表观遗传景观,特别是全基因组DNA甲基化,以及它对这些亚种之间的基因表达和新陈代谢的影响尚未得到充分理解.
研究的目的:
- 为了研究全基因组DNA甲基化,转录和代谢在日本和印加大米.
- 为了揭示这两种主要的米子种之间的分子分化.
主要方法:
- 使用全基因组双硫酸盐测序对全基因组DNA甲基化模式进行比较分析.
- 通过RNA测序进行转录组分析.
- 使用质谱学进行代谢组分析.
- 多主题数据的整合.
主要成果:
- 鉴定了83327个差异甲基化区域 (DMR) 和14903个DMR相关基因.
- 与日本大米相比,印加大米的CG,CHG和CHH甲基化水平明显较低.
- 鉴定了5596个差异表达的基因,富含碳水化合物和氨基酸代谢途径.
- 在DNA甲基化模式和关键农业基因的表达之间发现了强烈的相关性.
- 在亚种之间观察到碳水化合物代谢的显著差异,特别是三酸 (TCA) 循环代谢物.
结论:
- DNA甲基化在区分日本大米和印加大米亚种方面发挥着至关重要的作用.
- 表观遗传变异有助于形成不同的代谢特征,特别是在碳水化合物代谢中.
- 这些发现提供了对米化的见解,并为遗传改进策略提供了基础.
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