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在对单胃与年龄相关的古生物进行纵向基因组研究中的新型完整的甲基因途径
Brandi Feehan1, Qinghong Ran1, Victoria Dorman1
1Division of Biology, College of Arts and Sciences, Kansas State University, Manhattan, KS, 66506, USA.
Animal microbiome
|July 17, 2023
概括
这项研究追踪了整个猪肠道的古老生物,揭示了新型甲原体及其功能. 研究结果显示,甲原体在宿主和时间之间存在,对单胃系统中酸盐利用的新见解.
科学领域:
- 微生物组研究 微生物组研究
- 考古物 (Archaea) 是一种古老的物种.
- 转基因组学是指转基因组学.
背景情况:
- 古生物在微生物组功能和宿主健康中发挥着至关重要的作用,但与细菌相比,它们的具体贡献仍未得到充分研究.
- 了解整个宿主生命周期中的甲原性古生物对于对古生物肠道和宿主健康影响的有限知识至关重要.
- 这项研究探讨了终身考古动力学,重点关注甲原性功能和新型考古甲基因组组装基因组 (MAGs) 的分布.
研究的目的:
- 确定终身古生物的动态,包括检测和单胃猪中甲原体的功能.
- 评估新型考古MAG的全球,时间和宿主分布.
- 调查猪中甲原性古生物的代谢途径和功能潜力.
主要方法:
- 从出生到成年 (1-156天) 追踪了7只单胃猪,在22个时间点收集便样本.
- 进行了gDNA提取,Illumina测序和生物信息分析,用于MAG生成,分类学赋值和功能注释.
- 进行了下游的遗传学分析,以确定全球,时间和宿主分布以及甲原性功能潜力.
主要成果:
- 产生了1130个非冗余的MAG,其中包括来自Methanomassiliicoccales和Methanobacteriales的8个甲原体.
- 确定了年轻猪中的甲基细菌和成年猪中的甲基菌,在不同的宿主,地理位置和时间段中发现了甲基生物.
- 确定了完整的变性,甲基变性和乙类甲生成途径,为单胃宿主提供了乙类甲生成的第一个证据.
结论:
- 年龄相关的检测模式表明受宿主饮食和微生物代谢影响的基质可用性差异.
- 包括乙酸利用在内的甲生成功能在各种宿主中可能至关重要.
- 这项以基因组为中心的研究增强了对单胃微生物组发展和古老功能的理解.
相关概念视频
01:30Diversity of Archaea I
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Archaea, a domain of single-celled microorganisms, are classified into five major phyla based on genetic and biochemical characteristics: Euryarchaeota, Crenarchaeota, Thaumarchaeota, Korarchaeota, and Nanoarchaeota. Among these, the phylum Euryarchaeota is notable for its remarkable diversity in morphology, metabolism, and ecological adaptations.Morphological and Metabolic DiversityMembers of Euryarchaeota exhibit a variety of cellular shapes, including rods and cocci. Their metabolic pathways...
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01:29Overview of Archaea
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Archaea, named after the Archaean eon, represent a unique domain of life, distinct from bacteria and eukaryotes, with remarkable traits. Their cellular and molecular features, ecological adaptability, and industrial relevance highlight their importance in understanding life processes and leveraging biotechnology.Cellular and Molecular CharacteristicsA defining feature of archaea is their unique membrane composition. Archaeal membranes contain ether-linked isoprenoid lipids, which confer...
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01:24Diversity of Archaea II
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Archaea, one of the three domains of life, exhibit remarkable diversity and adaptability, thriving in both extreme and moderate environments. Historically, most identified archaea have been classified into two major phyla: Euryarchaeota and Crenarchaeota. However, recent molecular studies have expanded this classification to include three additional phyla: Thaumarchaeota, Nanoarchaeota, and Korarchaeota, each exhibiting unique characteristics and ecological roles.Thaumarchaeota: Mesophiles...
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01:27Diversity of Archaea III
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Crenarchaeota, a prominent phylum of Archaea, is remarkable for its ability to thrive in extreme environments characterized by high temperatures and acidity. These microorganisms inhabit sulfuric hot springs, volcanic systems, and submarine hydrothermal vents, where temperatures often exceed 100°C. The unique adaptations of Crenarchaeota not only allow survival under such extreme conditions but also provide insights into the mechanisms of life in primordial Earth-like...
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01:29Diversity of Archaea IV
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Hyperthermophilic archaea are a group of extremophiles thriving at temperatures above 80°C, often in hydrothermal vents and volcanic soils where conditions surpass the boiling point of water. At such temperatures, proteins, membranes, and DNA in most organisms degrade, but hyperthermophiles have evolved remarkable adaptations to maintain stability and function.Unique Cellular FeaturesHyperthermophilic membranes are composed of a monolayer of biphytanyl tetraether lipids, which resist...
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01:29Viruses of Archaea
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Archaeal viruses play a crucial role in the ecosystems of extremophilic archaea, particularly those belonging to the phyla Euryarchaeota and Crenarchaeota. By shaping host evolution and facilitating gene transfer, these viruses influence microbial communities and contribute to genetic diversity in extreme environments. The archaea they infect thrive in acidic hot springs and hydrothermal vents characterized by high temperatures and low pH. Archaeal viruses exhibit remarkable structural...
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