选择在全基因组基因表达塑性大米在潮湿和干燥的田野环境中的选择
Elena Hamann1,2, Simon C Groen3,4,5,6, Taryn S Dunivant3,4,5
1Department of Biological Sciences, Fordham University, Bronx, New York, USA.
Molecular ecology
|August 31, 2024
概括
自然选择塑造了大米的基因表达可塑性,适应性进化不受成本限制. 这项研究揭示了影响环境的可塑性上下文依赖的选择模式.
科学领域:
- 分子生物学分子生物学
- 进化生物学 进化生物学
- 遗传学 是一个遗传学.
背景情况:
- 基因表达在对环境变化的反应中表现出可塑性.
- 了解这种可塑性在自然选择下的演变至关重要,特别是在野生和养物种中.
研究的目的:
- 研究自然选择如何塑造大米干旱引起的基因表达可塑性.
- 确定选择是否对可塑性本身起作用,以及在不同品种群体中是否存在差异.
主要方法:
- 在田间条件下利用了来自118个加入的7,500多个叶子转录的基因型选择分析.
- 分析了干旱引起的基因表达可塑性模式及其与环境变异的关系.
主要成果:
- 大多数逐渐塑性转录显示中性选择,而离散模式面临更强大的选择在塑性.
- 适应性可塑性在品种组之间有所不同,没有证据表明成本限制了进化.
- 选择可塑性受到其程度,转录长度和基因体甲基化的影响.
结论:
- 对基因表达可塑性的选择取决于上下文,与多种群体环境相关.
- 适应性可塑性进化不太可能被环境中的相反选择压力所限制.
- 提供了全基因组的选择,生态约束和塑料的分子相互作用以及对干旱的进化反应的观点.
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