Gelada genomes highlight events of gene flow, hybridisation and local adaptation that track past climatic changes

IF 4.5 1区 生物学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY
Matteo Caldon, Giacomo Mutti, Alessandro Mondanaro, Hiroo Imai, Takayoshi Shotake, Gonzalo Oteo Garcia, Gurja Belay, Jordi Morata, Jean-Rémi Trotta, Francesco Montinaro, Spartaco Gippoliti, Cristian Capelli
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Abstract

Theropithecus gelada, the last surviving species of this genus, occupy a unique and highly specialised ecological niche in the Ethiopian highlands. A subdivision into three geographically defined populations (Northern, Central and Southern) has been tentatively proposed for this species on the basis of genetic analyses, but genomic data have been investigated only for two of these groups (Northern and Central). Here we combined newly generated whole genome sequences of individuals sampled from the population living south of the East Africa Great Rift Valley with available data from the other two gelada populations to reconstruct the evolutionary history of the species. Integrating genomic and paleoclimatic data we found that gene-flow across populations and with Papio species tracked past climate changes. The isolation and climatic conditions experienced by Southern geladas during the Holocene shaped local diversity and generated diet-related genomic signatures.

Abstract Image

Gelada 基因组突显了基因流动、杂交和地方适应事件,这些事件追踪了过去的气候变化。
吉尔达猿(Theropithecus gelada)是该属最后一个幸存的物种,在埃塞俄比亚高原占据着一个独特而高度专业化的生态位。根据遗传分析,该物种被初步划分为三个地理界定的种群(北部、中部和南部),但目前只对其中两个种群(北部和中部)的基因组数据进行了研究。在这里,我们将从生活在东非大裂谷南部的种群中采样的个体新生成的全基因组序列与来自其他两个gelada种群的现有数据相结合,重建了该物种的进化史。通过整合基因组和古气候数据,我们发现基因在不同种群间的流动以及在狒狒物种间的流动追踪了过去的气候变化。全新世期间南方狮尾狒所经历的隔离和气候条件塑造了当地的多样性,并产生了与饮食相关的基因组特征。
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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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