受白鼻综合征影响的小棕蝠(Myotis lucifugus, Le Conte, 1831)中可能有益的基因组位点对基因表达的影响

IF 3.5 2区 生物学 Q1 EVOLUTIONARY BIOLOGY
Robert Kwait, Malin L. Pinsky, Sarah Gignoux-Wolfsohn, Evan A. Eskew, Kathleen Kerwin, Brooke Maslo
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引用次数: 0

摘要

全基因组选择扫描已成为研究野生动物对新出现疾病的进化反应的常用工具。然而,基因组扫描很容易出现假阳性,而且几乎无法证明基因位点影响生存的具体机制。将假定的抗性基因型与可观察到的表型联系起来,可增加对基因组扫描结果的信心,并提供生存机制的证据,从而指导保护和管理工作。在这里,我们使用表达量性状位点(eQTL)分析来揭示基因表达与小棕蝠(Myotis lucifugus)在感染白鼻综合征致病因子后仍能存活的等位基因之间的关系。我们发现,在与存活率相关的 63 个单核苷酸多态性(SNPs)中,有 25 个与翅膀组织中的基因表达有关。差异表达基因的功能注释与先天免疫系统、新陈代谢、昼夜节律和细胞对应激的反应有关。此外,我们还观察到多个对生存有影响的基因的差异表达,这些基因与病灶 SNP 的连锁不平衡位点有关。这些发现共同支持了这些基因座的选择性功能,并表明驱动生存的部分机制可能是上皮组织中免疫和其他反应的改变。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Impact of putatively beneficial genomic loci on gene expression in little brown bats (Myotis lucifugus, Le Conte, 1831) affected by white-nose syndrome

Impact of putatively beneficial genomic loci on gene expression in little brown bats (Myotis lucifugus, Le Conte, 1831) affected by white-nose syndrome

Genome-wide scans for selection have become a popular tool for investigating evolutionary responses in wildlife to emerging diseases. However, genome scans are susceptible to false positives and do little to demonstrate specific mechanisms by which loci impact survival. Linking putatively resistant genotypes to observable phenotypes increases confidence in genome scan results and provides evidence of survival mechanisms that can guide conservation and management efforts. Here we used an expression quantitative trait loci (eQTL) analysis to uncover relationships between gene expression and alleles associated with the survival of little brown bats (Myotis lucifugus) despite infection with the causative agent of white-nose syndrome. We found that 25 of the 63 single-nucleotide polymorphisms (SNPs) associated with survival were related to gene expression in wing tissue. The differentially expressed genes have functional annotations associated with the innate immune system, metabolism, circadian rhythms, and the cellular response to stress. In addition, we observed differential expression of multiple genes with survival implications related to loci in linkage disequilibrium with focal SNPs. Together, these findings support the selective function of these loci and suggest that part of the mechanism driving survival may be the alteration of immune and other responses in epithelial tissue.

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来源期刊
Evolutionary Applications
Evolutionary Applications 生物-进化生物学
CiteScore
8.50
自引率
7.30%
发文量
175
审稿时长
6 months
期刊介绍: Evolutionary Applications is a fully peer reviewed open access journal. It publishes papers that utilize concepts from evolutionary biology to address biological questions of health, social and economic relevance. Papers are expected to employ evolutionary concepts or methods to make contributions to areas such as (but not limited to): medicine, agriculture, forestry, exploitation and management (fisheries and wildlife), aquaculture, conservation biology, environmental sciences (including climate change and invasion biology), microbiology, and toxicology. All taxonomic groups are covered from microbes, fungi, plants and animals. In order to better serve the community, we also now strongly encourage submissions of papers making use of modern molecular and genetic methods (population and functional genomics, transcriptomics, proteomics, epigenetics, quantitative genetics, association and linkage mapping) to address important questions in any of these disciplines and in an applied evolutionary framework. Theoretical, empirical, synthesis or perspective papers are welcome.
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