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幼虫的营养压力诱导了适应性反应,这些反应超越了模型昆虫雄性的一代

Lucy Rebecca Davies^1,2, Torsten N Kristensen³, Jesper G Sørensen¹

¹Department of Biology, Aarhus University, DK-8000 Aarhus C, Denmark.

The Journal of experimental biology

|January 17, 2025

概括

父母的饮食质量可以使后代对营养缺乏产生主要影响. (Drosophila melanogaster) 显示出更好的生存和饥饿耐受性,当父母发展在不良的饮食,展示了适应性的代代反应.

科学领域:

进化生物学是进化的生物学.
发育生物学是发展生物学.
营养科学营养科学

背景情况:

生物的持久性取决于应对营养压力.
跨代营养效应对于具有短代周期的物种至关重要.
了解适应性代对饮食质量的反应是有限的.

研究的目的:

为了调查幼虫营养质量是否优先于后代,以应对Drosophila melanogaster的后续饮食挑战.
评估父母饮食对后代活力和耐压力的影响.
为了确定跨代营养原始化的持续性.

主要方法:

在Drosophila melanogaster中的幼虫饮食操纵.
评估卵到成人的生存能力和后代的饥饿耐受性.
男子后代的转录形状分析.
对跨代的原始化持久性的评估.

主要成果:

在低质量的饮食中发展的雌性产生的后代在类似的饮食中增加了生存能力和饥饿耐受性.
一代人只吃高质量的饮食,就消除了跨代人的原始效应.
转录基因分析表明幼虫原始化,而不是成年人的构成性调整.

结论:

代代原始化是一种适应机制,使生物能够应对波动的营养环境.
幼虫的营养经验可以在表观遗传上为特定的饮食条件准备后代.
这种原始化是暂时的,可以通过在后代改善营养来逆转.

关键词:

这种植物是Drosophila.产妇对母亲的影响.营养营养营养营养营养饥饿饥饿饥饿饥饿饥饿可变的环境变量.

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