Strong phenotypic plasticity limits potential for evolutionary responses to climate change.
Strong phenotypic plasticity limits potential for evolutionary responses to climate change.
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DOI：
10.1038/s41467-018-03384-9
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发表时间：
2018-03-08
影响因子：
16.6
通讯作者：
Wheat CW
中科院分区：
文献类型：
--
作者：
Oostra V;Saastamoinen M;Zwaan BJ;Wheat CW
表型可塑性，即来自一个基因组的多种表型的表达，是对短期环境波动的广泛适应，但它是否有助于进化适应气候变化仍然存在争议。在这里，我们调查的季节性可塑性和适应潜力的非洲热带蝴蝶表达不同的表型在旱季和雨季。我们评估了转录结构的可塑性在一个全因子分析的遗传和环境的影响，在72个人，并揭示了普遍的基因表达差异的季节表型。引人注目的是，群体内可塑性遗传变异基本上不存在，这与可靠地预测季节转换的特定环境线索的专业化一致。在气候变化下，预测线索准确性的下降可能会加剧适应不良的表型-环境错配，并增加对反应规范的选择压力。然而，所观察到的可塑性遗传变异的缺乏限制了进化反应，可能削弱人口持久性的前景。因此，季节性塑料物种可能特别容易受到气候变化的影响。表型可塑性--从同一基因组表达多种表型的能力--是一种对环境变异性的广泛适应。在这里，Oostra等人分析了具有不同季节表型的非洲蝴蝶的转录组，并观察到缺乏可塑性的变化，限制了对气候变化的进化反应的潜力。
Phenotypic plasticity, the expression of multiple phenotypes from one genome, is a widespread adaptation to short-term environmental fluctuations, but whether it facilitates evolutionary adaptation to climate change remains contentious. Here, we investigate seasonal plasticity and adaptive potential in an Afrotropical butterfly expressing distinct phenotypes in dry and wet seasons. We assess the transcriptional architecture of plasticity in a full-factorial analysis of heritable and environmental effects across 72 individuals, and reveal pervasive gene expression differences between the seasonal phenotypes. Strikingly, intra-population genetic variation for plasticity is largely absent, consistent with specialisation to a particular environmental cue reliably predicting seasonal transitions. Under climate change, deteriorating accuracy of predictive cues will likely aggravate maladaptive phenotype-environment mismatches and increase selective pressures on reaction norms. However, the observed paucity of genetic variation for plasticity limits evolutionary responses, potentially weakening prospects for population persistence. Thus, seasonally plastic species may be especially vulnerable to climate change. Phenotypic plasticity—the ability to express multiple phenotypes from the same genome—is a widespread adaptation to environmental variability. Here, Oostra et al analyze transcriptomes of an African butterfly with distinct seasonal phenotypes, and observe lack of variation for plasticity, limiting potential for evolutionary responses to climate change.
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影响因子：
3
作者：
Korneliussen TS;Albrechtsen A;Nielsen R
通讯作者：
Nielsen R
DOI：
10.1098/rspb.2014.2084
发表时间：
2014-12-22
影响因子：
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10.1111/j.2517-6161.1995.tb02031.x
发表时间：
1995-01-01
影响因子：
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作者：
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通讯作者：
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影响因子：
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Mackay, Trudy F. C.