在多态位点的DNA基组成的进化模式突出了环境在塑造大麦和大米基因组中的作用
Xiangjian Gou1,2, Yang Shao1,2, Xiao Wang1,2
1National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China.
The plant genome
|April 30, 2024
概括
农作物化导致腺素 (A) 和胆氨酸 (T) 核酸的增加 ([AT]-增加). 太阳紫外线辐射和温度等环境因素与这种基因组变化相关,影响作物进化.
科学领域:
- 基因组学就是基因组学.
- 进化生物学 进化生物学
- 植物科学 植物科学
背景情况:
- 比较基因组学揭示了作物化通常涉及在多态位点增加腺素 (A) 和胆氨酸 (T) 核酸 ([AT]-增加).
- 环境因素的影响,如太阳紫外线 (UV) 辐射和温度,在作物进化过程中对这种[AT]增加的影响仍未得到充分研究.
研究的目的:
- 研究大麦和大米基因组的[AT]增加及其与自然环境因素的关联.
- 确定在作物化过程中基因组基因组合变化的潜在环境驱动因素.
主要方法:
- 从368个大麦和1375个大米加入中分析单核酸多态 (SNP).
- 在[AT]增加,紫外线相关的动机频率和地理参考环境数据 (紫外线辐射,温度) 之间进行关联分析.
- 用[AT]和环境因素作为表型进行全基因组关联映射.
主要成果:
- 从野生到改良的大麦和大米品种观察到一致的[AT]增加.
- 基因组区域具有更高的[AT]增加显示了与紫外线相关的动机的更高频率,这表明紫外线辐射是驱动因素.
- 在具有较低太阳紫外线辐射和较低温度的环境中发现了具有更高[AT]值的加入,这表明存在负相关性.
结论:
- 太阳紫外线辐射和温度是潜在的环境因素,影响在作物化过程中基因组基因组合的变化.
- 确定了三种候选基因,这些基因可能会在环境影响下导致[AT]变异.
- 这些发现提供了对DNA基组成的进化模式和由环境相互作用驱动的潜在机制的见解.
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