不同地理来源的两种同域沙漠啮齿动物(Dipus sagitta和Meriones meridianus)细菌微生物组及其组装过程。

IF 2 2区 生物学 Q2 ZOOLOGY
Current Zoology Pub Date : 2024-10-04 eCollection Date: 2025-08-01 DOI:10.1093/cz/zoae062
Dilala Tuoliu, Jilong Cheng, Lin Xia, Zhixin Wen, Muyang Wang, Weikang Yang, Qisen Yang
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引用次数: 0

摘要

哺乳动物的微生物组对宿主的适应性有着深远的影响,但驱动哺乳动物微生物组组装和转移的过程尚不清楚。为了探索不同寄主物种和地理位置的小型哺乳动物微生物群落格局,并衡量不同过程对驱动组装模式的相对贡献,本研究从2个地理位置遥远、环境不同的地区采集了2种同域沙漠啮齿动物(Dipus sagitta和Meriones meridianus),并进行了16S rRNA基因测序。弓形草和子午线草的微生物组差异显著,线性混合模型(LMM)分析表明,微生物多样性主要受物种而非环境的影响。对于每种啮齿动物,不同地理区域的微生物组多样性和结构存在差异,来自降雨较少环境的个体表现出更大的多样性。零模型结果表明,扩散限制和生态漂移,而不是不同的选择压力作用于微生物组。此外,每个群体都有一个不同的核心属,这表明微生物组的分类组成是由随机过程形成的。我们的研究结果表明,宿主之间微生物组的变化,无论是在地理啮齿动物种群内部还是在地理啮齿动物种群之间,是由细菌扩散和生态漂变驱动的,而不是由不同的选择压力驱动的。这些结果阐明了沙漠小型哺乳动物细菌微生物群的多样性模式和组装过程。破译形成微生物群落的过程是更好地理解哺乳动物的环境-宿主-微生物相互作用是如何建立和维持的前提,特别是在环境干扰和全球变化增加的背景下。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Bacterial microbiome and their assembly processing in two sympatric desert rodents (<i>Dipus sagitta</i> and <i>Meriones meridianus</i>) from different geographic sources.

Bacterial microbiome and their assembly processing in two sympatric desert rodents (<i>Dipus sagitta</i> and <i>Meriones meridianus</i>) from different geographic sources.

Bacterial microbiome and their assembly processing in two sympatric desert rodents (<i>Dipus sagitta</i> and <i>Meriones meridianus</i>) from different geographic sources.

Bacterial microbiome and their assembly processing in two sympatric desert rodents (Dipus sagitta and Meriones meridianus) from different geographic sources.

The microbiome of mammals has profound effects on host fitness, but the process, which drives the assembly and shift of mammalian microbiome remains poorly understood. To explore the patterns of small mammal microbial communities across host species and geographical sites and measure the relative contributions of different processes in driving assembly patterns, 2 sympatric desert rodent species (Dipus sagitta and Meriones meridianus) were sampled from 2 geographically distant regions, which differed in the environment, followed by 16S rRNA gene sequencing. The microbiomes differed significantly between D. sagitta and M. meridianus, and linear mixed modeling (LMM) analysis revealed that microbial diversity was mostly affected by species rather than the environment. For each rodent species, the microbiome diversity and structure differed across geographical regions, with individuals from lower rainfall environments exhibiting greater diversity. The null modeling results suggested dispersal limitation and ecological drift rather than differential selective pressures acting on the microbiome. In addition, each group had a different core genus, suggesting that the taxonomic composition of the microbiome was shaped most strongly by stochastic processes. Our results suggest that variation in the microbiome between hosts, both within and among geographic rodent populations, is driven by bacterial dispersal and ecological drift rather than by differential selective pressures. These results elucidated the diversity patterns and assembly processes of bacterial microbiomes in small desert mammals. Deciphering the processes shaping the assembly of the microbial community is a premise for better understanding how the environment-host-microbe interactions of mammals are established and maintained, particularly in the context of increased environmental disturbances and global changes.

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来源期刊
Current Zoology
Current Zoology Agricultural and Biological Sciences-Animal Science and Zoology
CiteScore
3.20
自引率
9.10%
发文量
111
审稿时长
6 weeks
期刊介绍: About the Journal Current Zoology (formerly Acta Zoologica Sinica, founded in 1935) is an open access, bimonthly, peer-reviewed international journal of zoology. It publishes review articles and research papers in the fields of ecology, evolution and behaviour. Current Zoology is sponsored by Institute of Zoology, Chinese Academy of Sciences, along with the China Zoological Society.
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