Viral diversity and co-evolutionary dynamics across the ant phylogeny

IF 4.5 1区 生物学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY
Peter J. Flynn, Corrie S. Moreau
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Abstract

Knowledge of viral biodiversity within insects, particularly within ants, is extremely limited with only a few environmental viruses from invasive ant species identified to date. This study documents and explores the viral communities in ants. We comprehensively profile the metagenomes of a phylogenetically broad group of 35 ant species with varied ecological traits and report the discovery of 3710 novel and unique ant-associated viral genomes. These previously unknown viruses discovered within this study constitute over 95% of all currently described ant viruses, significantly increasing our knowledge of the ant virosphere. The identified RNA and DNA viruses fill gaps in insect-associated viral phylogenies and uncover evolutionary histories characterized by both frequent host switching and co-divergence. Many ants also host diverse bacterial communities, and we discovered that approximately one-third of these new ant-associated viruses are bacteriophages. Two ecological categories, bacterial abundance in the host and habitat degradation are both correlated with ant viral diversity and help to structure viral communities within ants. These data demonstrate that the ant virosphere is remarkably diverse phylogenetically and genomically and provide a substantial foundation for studies in virus ecology and evolution within eukaryotes. We highlight the importance of studying insect-associated viruses in natural ecosystems in order to more thoroughly and effectively understand host-microbe evolutionary dynamics.

Abstract Image

蚂蚁系统发育过程中的病毒多样性和共同进化动态。
对昆虫体内,尤其是蚂蚁体内病毒生物多样性的了解极为有限,迄今为止只发现了几种来自入侵蚂蚁物种的环境病毒。本研究记录并探索了蚂蚁体内的病毒群落。我们全面剖析了具有不同生态特征的 35 个蚂蚁物种系统发育的元基因组,并报告发现了 3710 个新颖独特的蚂蚁相关病毒基因组。这项研究发现的这些以前未知的病毒占目前描述的所有蚂蚁病毒的 95% 以上,大大增加了我们对蚂蚁病毒圈的了解。已发现的 RNA 和 DNA 病毒填补了昆虫相关病毒系统发生学的空白,揭示了以频繁宿主转换和共同分化为特征的进化史。许多蚂蚁还寄生于不同的细菌群落,我们发现这些新的蚂蚁相关病毒中约有三分之一是噬菌体。寄主中的细菌丰度和栖息地退化这两个生态类别都与蚂蚁病毒多样性相关,并有助于构建蚂蚁体内的病毒群落。这些数据表明,蚂蚁病毒圈在系统发育和基因组学上具有显著的多样性,为研究真核生物中的病毒生态学和进化提供了重要基础。我们强调了在自然生态系统中研究昆虫相关病毒的重要性,以便更全面、更有效地了解宿主-微生物的进化动态。
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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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