非压力温度变化影响跨代表型可塑性在整个生命周期的Arabidopsis thaliana植物
Ailén Authier1,2, Pablo Cerdán1,3, Gabriela Auge1,2
1Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Buenos Aires, Argentina.
Annals of botany
|November 13, 2023
概括
父母的温度环境会影响Arabidopsis thaliana的后代跨代的后代特征. 这些跨代的影响,影响发芽和开花时间,取决于经历环境暗示的生命阶段.
科学领域:
- 植物生物学 植物生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 环境科学环境科学
背景情况:
- 植物表现出表型的可塑性,以应对适应季节性变化.
- 非压力环境变化的跨代影响是一个新兴的研究领域.
- 了解环境线索如何影响后代对于预测适应至关重要.
研究的目的:
- 研究环境温度变化对Arabidopsis thaliana跨代可塑性的影响.
- 评估不同生命阶段经历的温度如何影响后代的关键发育特征.
主要方法:
- 阿拉比多普西斯塔利亚纳 (哥伦比亚-0) 在受控温度环境 (18°C和24°C) 中成长了几代人.
- 温度处理包括在螺栓之前和之后 (18-24°C和24-18°C) 持续的环境和变化.
- 测量的主要特征包括种子发芽,开花时间,生殖生物质和第二代和第三代的种子大小.
主要成果:
- 父母的环境,甚至在开花之前,影响了第二代的发芽和开花时间,根据父母的生活阶段产生相反的影响.
- 后代的繁殖生物量主要受到其直接环境的影响.
- 第三代种子的种子大小对跨代相关的环境产生了积极的反应.
结论:
- 非压力环境变化可以诱导植物发育特征的跨代可塑性.
- 这些影响的方向和程度取决于特定的父母/祖父母生命阶段感知环境信号.
- 微妙的环境变化的跨代影响可能在塑造未来几代人生命史特征和适应潜力方面发挥重要作用.
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