宿主饮食促使珊瑚礁鱼类和哺乳动物的肠道微生物群趋同。

IF 4.5 1区 生物学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY
Samuel Degregori, Nina M. D. Schiettekatte, Jordan M. Casey, Simon J. Brandl, Alexandre Mercière, Katherine R. Amato, Florent Mazel, Valeriano Parravicini, Paul H. Barber
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引用次数: 0

摘要

动物肠道微生物组对宿主的生理和健康至关重要。与其他类群相比,鱼类--数量最多、种类最丰富的脊椎动物类群--的肠道微生物组很少受到关注。特别是珊瑚礁鱼类,它们的进化历史和摄食生态范围很广,很可能与肠道微生物组的多样性有关。鱼类和哺乳动物食草的反复进化也使我们能够研究整个脊椎动物生命树中微生物组的相似性与饮食的关系。在这里,我们生成了一个大型珊瑚礁鱼类肠道微生物组数据集(n = 499 个样本,19 个物种),并将其与不同的公共微生物组数据(n = 447)相结合,以显示宿主饮食驱动了珊瑚礁鱼类和哺乳动物肠道微生物组之间的显著趋同。我们证明,这种相似性主要是由食肉和食草驱动的,食草和食肉的宿主在鱼类和哺乳动物中表现出不同的微生物组成。我们还表明,鱼类和哺乳动物的肠道微生物组共享主要的微生物类群,包括Ruminoccocus属和Akkermansia属,以及预测的代谢途径。尽管鱼类和哺乳动物在进化和生态方面存在很大差异,但我们的研究结果表明,它们的肠道微生物组承受着相似的饮食选择压力。因此,在比较远缘宿主的肠道微生物组时,除了系统共生之外,还必须考虑饮食因素。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Host diet drives gut microbiome convergence between coral reef fishes and mammals

Host diet drives gut microbiome convergence between coral reef fishes and mammals

Animal gut microbiomes are critical to host physiology and fitness. The gut microbiomes of fishes—the most abundant and diverse vertebrate clade—have received little attention relative to other clades. Coral reef fishes, in particular, make up a wide range of evolutionary histories and feeding ecologies that are likely associated with gut microbiome diversity. The repeated evolution of herbivory in fishes and mammals also allows us to examine microbiome similarity in relationship to diet across the entire vertebrate tree of life. Here, we generate a large coral reef fish gut microbiome dataset (n = 499 samples, 19 species) and combine it with a diverse aggregation of public microbiome data (n = 447) to show that host diet drives significant convergence between coral reef fish and mammalian gut microbiomes. We demonstrate that this similarity is largely driven by carnivory and herbivory and that herbivorous and carnivorous hosts exhibit distinct microbial compositions across fish and mammals. We also show that fish and mammal gut microbiomes share prominent microbial taxa, including Ruminoccocus spp. and Akkermansia spp., and predicted metabolic pathways. Despite the major evolutionary and ecological differences between fishes and mammals, our results reveal that their gut microbiomes undergo similar dietary selective pressures. Thus, diet, in addition to phylosymbiosis must be considered even when comparing the gut microbiomes of distantly related hosts.

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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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