对一种普遍存在的细菌系CSP1-3 (以下简称"Sysuimicrobiota") 的化学自营特征的洞察
Lan Liu1, Zheng-Han Lian1, Ai-Ping Lv1
1State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Stress Biology and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China.
National science review
|November 29, 2024
概括
现在被称为Sysuimicrobiota的未培养的细菌系CSP1-3通过多个途径利用自身养,为全球营养循环做出贡献.
科学领域:
- 微生物学 微生物学
- 转基因组学是指转基因组学.
- 生物地质化学生物地质化学
背景情况:
- 由于缺乏培养,候选细菌系CSP1-3在很大程度上仍然没有特征.
- 了解其代谢能力对于理解微生物在生态系统中的作用至关重要.
研究的目的:
- 研究CSP1-3族的代谢潜力和生态意义.
- 为该类提出一个正式的分类学名称.
主要方法:
- 对112个元基因组组装基因组 (MAG) 的分析.
- 来自温泉沉积物的化学自营养丰富物.
- 光在现场杂交 (FISH).
- 在DNA稳定同位素探测 (DNA-SIP).
- 祖先状态的重建.祖先状态的重建.
主要成果:
- CSP1-3成员很可能是任择性无气体.
- 在五个家族中,有三种通过减少性甘氨酸通路 (RGP),木-Ljungdahl通路 (WLP) 或卡尔文-本森-巴什姆 (CBB) 通路具有自营养能力.
- 有证据支持使用或硫化物作为电子捐赠者的化学自营养.
- 祖先状态重建表明RGP是祖先的自营养途径,WLP和CBB是通过水平基因转移获得的.
- 该类分布广泛,可能参与碳,硫和循环.
结论:
- 拟定为Sysuimicrobiota的类型CSP1-3表现出各种自营代谢.
- 这种类型在生物地球化学循环中起着重要作用.
- 系统微生物群代表了微生物群落的重要,以前被低估的组成部分.
相关概念视频
Microbial Nutrition
1
Organisms exhibit remarkable metabolic diversity, categorized based on how they acquire energy and carbon. These strategies enable survival in various ecological niches and are essential for maintaining energy flow and nutrient cycling within ecosystems.Energy and Carbon SourcesOrganisms are classified as phototrophs or chemotrophs based on energy acquisition. Phototrophs use light as their energy source, while chemotrophs rely on oxidizing chemical compounds. Further differentiation arises...
1
Anoxygenic Phototrophic Bacteria
Anoxygenic phototrophic bacteria are a diverse group of microorganisms that perform photosynthesis without producing oxygen. They primarily include purple sulfur bacteria, purple nonsulfur bacteria, green sulfur bacteria, and green nonsulfur bacteria. These bacteria are classified into the Gammaproteobacteria, Alphaproteobacteria, Betaproteobacteria, Chlorobi, and Chloroflexi lineages, each with distinct physiological and ecological adaptations.Purple sulfur bacteria belong to the...
Bacterial Phylum Bacteroidota
The phylum Bacteroidota includes over 700 species classified into four primary orders: Bacteroidales, Cytophagales, Flavobacteriales, and Sphingobacteriales. These gram-negative, non-sporulating rods exhibit saccharolytic capabilities and can be aerobic or fermentative, encompassing obligate aerobes, facultative aerobes, and obligate anaerobes. Many species display gliding motility, though some are nonmotile or use flagella. The genus Bacteroides is well-studied due to its significant role in...
Bacterial Phylum Proteobacteria
Proteobacteria, one of the largest and most diverse bacterial phyla, encompasses a wide range of Gram-negative bacteria distinguished by their outer membrane composed of lipopolysaccharides. These microorganisms exhibit various metabolic capabilities, including phototrophy, chemolithotrophy, and heterotrophy, and thrive in diverse environments from soil to aquatic systems and host-associated niches. The phylum is divided into six classes: Alphaproteobacteria, Betaproteobacteria,...
Bacterial Phylum Cyanobacteria
Cyanobacteria are a diverse group of oxygenic, phototrophic bacteria that played a pivotal role in converting Earth’s atmosphere from anoxic to oxygen-rich billions of years ago. They exhibit remarkable morphological diversity, ranging from unicellular forms to filamentous types, with cell sizes varying between 0.5 μm and 100 μm. Cyanobacteria are classified into five groups: Chroococcales (unicellular, dividing by binary fission), Pleurocapsales (unicellular, dividing by...
Bacterial Phylum Tenericutes
The phylum Tenericutes, which includes the single class Mollicutes, comprises bacteria that lack cell walls. The term "Mollicutes" derives from the Latin word mollis, meaning "soft." These organisms are among the smallest known and are commonly referred to as mycoplasmas due to the prominence of the genus Mycoplasma, which includes well-known human pathogens. Despite their inability to stain gram-positively (a result of their lack of cell walls), mycoplasmas are phylogenetically related to the...


