The Phenotypic Effects of Spontaneous Mutations in Different Environments
The Phenotypic Effects of Spontaneous Mutations in Different Environments
复制标题
不同环境下自发突变的表型效应
作者：
L. Latta;M. Peacock;D. Civitello;J. L. Dudycha;J. Meik;S. Schaack
理解突变的上下文依赖性代表了当前突变研究的前沿。特别是，了解性状如何变化，在他们的能力，积累突变变异和环境如何影响突变表型的表达产生洞察进化过程。我们进行了表型测定在四个环境中使用一组蚤状蚤突变积累线，以检查突变的上下文依赖性。在个体环境中，生活史性状的突变变异比形态性状快。在不同的环境中，可塑性的突变方差也更大的生活史性状比形态性状，虽然这种模式是不太强大。此外，突变方差的表达依赖于环境，这导致在某些情况下，在不同环境中的基因型性能的排名顺序的变化。这种由突变引起的隐性遗传变异可以保持遗传多样性，并允许在空间或时间可变的环境中快速适应。
Understanding the context dependence of mutation represents the current frontier of mutation research. In particular, understanding how traits vary in their abilities to accrue mutational variation and how the environment influences expression of mutant phenotypes yields insight into evolutionary processes. We conducted phenotypic assays in four environments using a set of Daphnia pulex mutation accumulation lines to examine the context dependence of mutation. Life-history traits accrued mutational variance faster than morphological traits when considered in individual environments. Across environments, the mutational variance in plasticity was also greater for life-history traits than for morphological traits, although this pattern was less robust. In addition, the expression of mutational variance depended on the environment, which resulted in changes in the rank order of genotype performance across environments in some cases. Such cryptic genetic variation resulting from mutation may maintain genetic diversity and allow for rapid adaptation in spatially or temporally variable environments.
DOI：
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发表时间：
2015-10
期刊：
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影响因子：
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作者：
Douglas M. Bates;M. Maechler;Ben Bolker;Steven C. Walker
通讯作者：
Douglas M. Bates;M. Maechler;Ben Bolker;Steven C. Walker
影响因子：
3.3
作者：
David Houle;B. Morikawa;Michael Lynch
通讯作者：
David Houle;B. Morikawa;Michael Lynch
影响因子：
10.7
作者：
Xu, Sen;Schaack, Sarah;Cristescu, Melania E.
通讯作者：
Cristescu, Melania E.