对两个北极 Pseudomonas 菌株的比较基因组分析揭示了对寒冷环境中的有氧脱的洞察力
Yong-Qiang Hu1, Yin-Xin Zeng2,3, Yu Du1
1Key Laboratory for Polar Science, Polar Research Institute of China, Ministry of Natural Resources, Shanghai, 200136, China.
BMC genomics
|September 11, 2023
概括
对寒冷耐受性的北极 Pseudomonas 菌株在冬季废水处理方面表现有前途. 它们的基因组揭示了脱和适应寒冷的基因,这对于寒冷环境中的去除至关重要.
科学领域:
- 微生物学 微生物学
- 环境科学 环境科学
- 基因组学就是基因组学.
背景情况:
- 生物脱对于污水中的去除至关重要.
- 低温阻碍了废水处理中的微生物活动.
- 耐寒的有氧脱细菌 (ADB) 是寻求高效的冷环境处理.
研究的目的:
- 描述和分析两个寒冷耐受性的北极类 Pseudomonas 菌株的基因组.
- 识别导致脱和适应寒冷的遗传因素.
- 评估这些菌株在低温中去除的潜力.
主要方法:
- 从北极土壤中分离和鉴定伪omonas菌株PMCC200344和PMCC200367的特征.
- 全基因组测序和比较基因组分析.
- 鉴定和分析脱,适应寒冷和重金属抗性基因.
主要成果:
- Pseudomonas sp. 的完整基因组序列. PMCC200344 (6.48 Mbp,5,853 个基因) 和 Pseudomonas sp. 这两种病毒. 获得了PMCC200367 (6.36 Mbp,5,801 个基因).
- 这两种菌株都具有完整的脱路径和适应寒冷和耐重金属的基因,通常位于基因组岛屿上.
- 鉴定出了原体,但在两种菌株中都没有观察到质粒.
结论:
- 基因组数据提供了对寒冷环境中的微生物脱机制的见解.
- 北极 Pseudomonas 菌株具有在低温下有效去除的遗传潜力.
- 这些发现凸显了适应寒冷的细菌在冬季条件下在废水处理中的实用性.
相关概念视频
01:30Diversity of Archaea I
34
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...
34
01:27Diversity of Archaea III
32
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...
32
01:21Hyperthermophilic Bacteria
36
Domain Bacteria includes some unique hyperthermophilic species. They exhibit remarkable adaptations that enable survival in extreme environments.Thermotoga species are rod-shaped, gram-negative, non-sporulating hyperthermophiles that form a sheath-like envelope called a toga. They ferment sugars or starch, producing lactate, acetate, CO₂, and H₂, and can also grow via anaerobic respiration using H₂ and ferric iron. Found in hot springs and hydrothermal vents, over 20% of their...
36
01:29Diversity of Archaea IV
51
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...
51
01:29Viruses of Archaea
30
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...
30
01:24Diversity of Archaea II
36
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...
36