一种受气候变化威胁的北极海滨植物的进化拯救潜力。

IF 3.8 1区 生物学 Q1 BIOLOGY
Anniina L K Mattila, Øystein H Opedal, Maria H Hällfors, Laura Pietikäinen, Susanna H M Koivusaari, Marko-Tapio Hyvärinen
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引用次数: 0

摘要

气候变化对地理位置孤立的种群的影响可能尤为严重,这些种群必须通过可塑性反应进行调整或进化。在这里,我们研究了一种濒临灭绝的北极植物报春花(Primula nutans ssp. finmarchica)。我们通过巢式半同胞繁殖设计中的人工杂交实验,评估了这些种群为在迅速变暖的北极地区生存而进化的潜力(即进化拯救)。我们估算了可能存在选择压力冲突的性状的G矩阵、进化性和遗传限制。为了明确评估适应气候变化的潜力,我们利用人口和气候数据推断了在不同选择情景下从北方表型进化到南方表型的预期时间,并将预期进化速度与预测的气候变化速度联系起来。我们的研究结果表明,由于植被性状的进化能力比花卉性状的进化能力高出近10倍,因此在气候得到有效缓解的情况下,这些性状的适应几乎可以与气候的变化同步进行。然而,预计花卉性状的进化改变相对缓慢,这可能会阻碍花卉性状的进化,使其无法跟踪气候引起的授粉环境变化,从而影响有性生殖,进而降低进化拯救的可能性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The potential for evolutionary rescue in an Arctic seashore plant threatened by climate change.

The impacts of climate change may be particularly severe for geographically isolated populations, which must adjust through plastic responses or evolve. Here, we study an endangered Arctic plant, Primula nutans ssp. finmarchica, confined to Fennoscandian seashores and showing indications of maladaptation to warming climate. We evaluate the potential of these populations to evolve to facilitate survival in the rapidly warming Arctic (i.e. evolutionary rescue) by utilizing manual crossing experiments in a nested half-sibling breeding design. We estimate G-matrices, evolvability and genetic constraints in traits with potentially conflicting selection pressures. To explicitly evaluate the potential for climate change adaptation, we infer the expected time to evolve from a northern to a southern phenotype under different selection scenarios, using demographic and climatic data to relate expected evolutionary rates to projected rates of climate change. Our results indicate that, given the nearly 10-fold greater evolvability of vegetative than of floral traits, adaptation in these traits may take place nearly in concert with changing climate, given effective climate mitigation. However, the comparatively slow expected evolutionary modification of floral traits may hamper the evolution of floral traits to track climate-induced changes in pollination environment, compromising sexual reproduction and thus reducing the likelihood of evolutionary rescue.

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来源期刊
CiteScore
7.90
自引率
4.30%
发文量
502
审稿时长
1 months
期刊介绍: Proceedings B is the Royal Society’s flagship biological research journal, accepting original articles and reviews of outstanding scientific importance and broad general interest. The main criteria for acceptance are that a study is novel, and has general significance to biologists. Articles published cover a wide range of areas within the biological sciences, many have relevance to organisms and the environments in which they live. The scope includes, but is not limited to, ecology, evolution, behavior, health and disease epidemiology, neuroscience and cognition, behavioral genetics, development, biomechanics, paleontology, comparative biology, molecular ecology and evolution, and global change biology.
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