海洋Autographiviridae的菌体表现出高度的遗传多样性和全球范围的生物地理模式
1College of Juncao Science and Ecology, Fujian Agriculture and Forestry University, Fuzhou, China.
Communications biology
|August 18, 2025
概括
海洋Autographiviridae的菌体分布在全球和多样化,有1253个新的基因组揭示了6个新型组. 这些病毒对海洋细菌种群及其环境产生重大影响.
科学领域:
- 海洋微生物学 海洋微生物学
- 病毒学 病毒学
- 基因组学就是基因组学.
背景情况:
- 海洋病毒群体非常多样化,Autographiviridae是主导的菌体家族.
- 目前对海洋Autographiviridae的了解仅限于菌体感染特定宿主,如蓝色细菌.
研究的目的:
- 为了全面了解海洋Autographiviridae菌体的多样性,生态作用和功能能力.
- 通过恢复未培养的病毒基因组 (UViGs) 来扩大海洋Autographiviridae的基因组数据库.
主要方法:
- 1253个海洋Autographiviridae未培养病毒基因组 (UViGs) 的恢复和比较基因组分析.
- 基因组学分析基于一个保存的七个基因的核心,以将菌体分类为组.
- 超基因组招募分析以确定全球分布和生态.
主要成果:
- 1253个完整的海洋Autographiviridae UViGs被恢复,显示出显著的多样性.
- 基因组学分析确定了14个不同的群体,包括6个新描述的,基因组特征的变化.
- Autographiviridae的菌体分布在全球,特别是在热带和温带的上层海洋层,分布模式与宿主生态有关.
结论:
- 这项研究显著扩大了已知的海洋Autographiviridae的多样性和基因组谱.
- 菌体对海洋细菌群体施加自上而下的控制,影响生态系统动态.
- 这些发现凸显了Autographiviridae在海洋环境中的关键生态作用.
相关概念视频
01:29Viruses of Archaea
77
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...
77
01:29Diversity of Archaea IV
102
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...
102
01:24Diversity of Archaea II
82
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...
82
01:27Diversity of Archaea III
72
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...
72
01:30Diversity of Archaea I
96
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...
96
02:33Retroviruses
12.7K
Retroviruses and retrotransposons both insert copies of their genetic elements into the genome of the host cell. Thus, the viral genes are passed on when the host genome is replicated or translated. A typical retroviral DNA sequence contains 3-4 genes that encode the different proteins required for its structural assembly and function as a molecular parasite. This DNA is transcribed into a single mRNA, which is very similar in structure to conventional mRNAs, i.e., it is capped at the 5’...
12.7K