Distinct Genes with Similar Functions Underlie Convergent Evolution in Myotis Bat Ecomorphs.

IF 11 1区 生物学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Molecular biology and evolution Pub Date : 2024-09-04 DOI:10.1093/molbev/msae165
Ariadna E Morales, Frank T Burbrink, Marion Segall, Maria Meza, Chetan Munegowda, Paul W Webala, Bruce D Patterson, Vu Dinh Thong, Manuel Ruedi, Michael Hiller, Nancy B Simmons
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Abstract

Convergence offers an opportunity to explore to what extent evolution can be predictable when genomic composition and environmental triggers are similar. Here, we present an emergent model system to study convergent evolution in nature in a mammalian group, the bat genus Myotis. Three foraging strategies-gleaning, trawling, and aerial hawking, each characterized by different sets of phenotypic features-have evolved independently multiple times in different biogeographic regions in isolation for millions of years. To investigate the genomic basis of convergence and explore the functional genomic changes linked to ecomorphological convergence, we sequenced and annotated 17 new genomes and screened 16,426 genes for positive selection and associations between relative evolutionary rates and foraging strategies across 30 bat species representing all Myotis ecomorphs across geographic regions as well as among sister groups. We identify genomic changes that describe both phylogenetic and ecomorphological trends. We infer that colonization of new environments may have first required changes in genes linked to hearing sensory perception, followed by changes linked to fecundity and development, metabolism of carbohydrates, and heme degradation. These changes may be linked to prey acquisition and digestion and match phylogenetic trends. Our findings also suggest that the repeated evolution of ecomorphs does not always involve changes in the same genes but rather in genes with the same molecular functions such as developmental and cellular processes.

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功能相似的不同基因是蝠科蝠属异形动物趋同进化的基础
当基因组组成和环境触发因素相似时,趋同为探索进化的可预测性提供了机会。在这里,我们提出了一个新兴的模型系统来研究哺乳动物群体--蝙蝠属--在自然界中的趋同进化。三种觅食策略--拾食、拖网和空中捕食--各自具有不同的表型特征--在不同的生物地理区域独立进化了数百万年。为了研究趋同的基因组基础并探索与异形趋同相关的功能基因组变化,我们对 17 个新基因组进行了测序和注释,并筛选了 16,426 个基因,以确定正选择以及相对进化率与觅食策略之间的关联,这些基因涉及 30 个蝙蝠物种,代表了不同地理区域以及姊妹群之间的所有蝙蝠异形。我们发现了描述系统发育和形态变化趋势的基因组变化。我们推断,在新环境中定居可能首先需要与听觉感知有关的基因发生变化,然后是与繁殖和发育、碳水化合物代谢和血红素降解有关的基因发生变化。这些变化可能与猎物的获取和消化有关,并与系统发育趋势相吻合。我们的研究结果还表明,非同形体的反复进化并不总是涉及相同基因的变化,而是涉及具有相同分子功能(如发育和细胞过程)的基因的变化。
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来源期刊
Molecular biology and evolution
Molecular biology and evolution 生物-进化生物学
CiteScore
19.70
自引率
3.70%
发文量
257
审稿时长
1 months
期刊介绍: Molecular Biology and Evolution Journal Overview: Publishes research at the interface of molecular (including genomics) and evolutionary biology Considers manuscripts containing patterns, processes, and predictions at all levels of organization: population, taxonomic, functional, and phenotypic Interested in fundamental discoveries, new and improved methods, resources, technologies, and theories advancing evolutionary research Publishes balanced reviews of recent developments in genome evolution and forward-looking perspectives suggesting future directions in molecular evolution applications.
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