长达 36 年的研究揭示了野生小麦种群在不同微生境中的稳定性。

IF 4.5 1区 生物学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY
Tal Dahan-Meir, Thomas James Ellis, Fabrizio Mafessoni, Hanan Sela, Ori Rudich, Jacob Manisterski, Naomi Avivi-Ragolsky, Amir Raz, Moshe Feldman, Yehoshua Anikster, Magnus Nordborg, Avraham A. Levy
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引用次数: 0

摘要

野生种群的长期遗传研究非常稀少,但对于连接生态学和种群遗传学模型以及了解生物多样性的动态至关重要。我们介绍了一项对野生小麦种群的研究,该种群的采样时间长达 36 年,具有很高的空间分辨率。在实验过程中,我们沿横断面定期取样,对 832 个个体进行了基因分型。基因型在几十米的范围内被聚类到生态微生境中,这种聚类在研究的 36 代中非常稳定。模拟结果表明,很难确定这种空间和时间上的稳定性是反映了极其有限的扩散,还是反映了当地对生态参数的细微适应。通过一个普通花园实验,我们发现在不同微生境中发现的基因型在表型上存在差异。我们的研究结果为长期监测自然种群的种群遗传学提供了难得的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

36-year study reveals stability of a wild wheat population across microhabitats

36-year study reveals stability of a wild wheat population across microhabitats

Long-term genetic studies of wild populations are very scarce, but are essential for connecting ecological and population genetics models, and for understanding the dynamics of biodiversity. We present a study of a wild wheat population sampled over a 36-year period at high spatial resolution. We genotyped 832 individuals from regular sampling along transects during the course of the experiment. Genotypes were clustered into ecological microhabitats over scales of tens of metres, and this clustering was remarkably stable over the 36 generations of the study. Simulations show that it is difficult to determine whether this spatial and temporal stability reflects extremely limited dispersal or fine-scale local adaptation to ecological parameters. Using a common-garden experiment, we showed that the genotypes found in distinct microhabitats differ phenotypically. Our results provide a rare insight into the population genetics of a natural population over a long monitoring period.

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来源期刊
Molecular Ecology
Molecular Ecology 生物-进化生物学
CiteScore
8.40
自引率
10.20%
发文量
472
审稿时长
1 months
期刊介绍: Molecular Ecology publishes papers that utilize molecular genetic techniques to address consequential questions in ecology, evolution, behaviour and conservation. Studies may employ neutral markers for inference about ecological and evolutionary processes or examine ecologically important genes and their products directly. We discourage papers that are primarily descriptive and are relevant only to the taxon being studied. Papers reporting on molecular marker development, molecular diagnostics, barcoding, or DNA taxonomy, or technical methods should be re-directed to our sister journal, Molecular Ecology Resources. Likewise, papers with a strongly applied focus should be submitted to Evolutionary Applications. Research areas of interest to Molecular Ecology include: * population structure and phylogeography * reproductive strategies * relatedness and kin selection * sex allocation * population genetic theory * analytical methods development * conservation genetics * speciation genetics * microbial biodiversity * evolutionary dynamics of QTLs * ecological interactions * molecular adaptation and environmental genomics * impact of genetically modified organisms
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