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首页> 外文期刊>Evolution: International Journal of Organic Evolution >WHY ONTOGENY MATTERS DURING ADAPTATION: DEVELOPMENTAL NICHE CONSTRUCTION AND PLEIOTORPY ACROSS THE LIFE CYCLE IN ARABIDOPSIS THALIANA
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WHY ONTOGENY MATTERS DURING ADAPTATION: DEVELOPMENTAL NICHE CONSTRUCTION AND PLEIOTORPY ACROSS THE LIFE CYCLE IN ARABIDOPSIS THALIANA

机译：为什么在适应过程中发生个体发育问题：拟南芥生命周期中的发育生态位构建和褶皱

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摘要

This case study of adaptation in Arabidopsis thaliana shows that natural selection on early life stages can be intense and can influence the evolution of subsequent traits. Two mechanisms contribute to this influence: pleiotropy across developmental stages and developmental niche construction. Examples are given of pleiotropy of environmentally cued development across life stages, and potential ways that pleiotropy can be relieved are discussed. In addition, this case study demonstrates how the timing of prior developmental transitions determines the seasonal environment experienced subsequently, and that such developmental niche construction alters phenotypic expression of subsequent traits, the expression of genetic variation of those traits, and natural selection on those traits and alleles associated with them. As such, developmental niche construction modifies pleiotropic relationships across the life cycle in ways that influence the dynamics of adaptation. Understanding the genetic basis of life-cycle variation therefore requires consideration of environmental effects on pleiotropy.
机译：拟南芥适应性的这一案例研究表明，生命早期的自然选择可能很激烈，并可能影响其后代性状的演变。产生这种影响的机制有两种：跨发育阶段的多效性和发育生态位的构建。给出了生命周期中环境提示的发展的多效性的例子，并讨论了可以减轻多效性的潜在方法。此外，本案例研究证明了先前发育转变的时机如何确定随后经历的季节性环境，并且这种发育生态位的构建改变了后继性状的表型表达，这些性状的遗传变异表达以及对这些性状的自然选择。与他们相关的等位基因。这样，发展性利基建设以影响适应动力的方式改变了生命周期中的多效性关系。因此，了解生命周期变异的遗传基础需要考虑环境对多效性的影响。

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