非光合作用血统与蓝藻细菌的兄弟姐妹在开放海洋中与真核生物结合在一起
Fabian Wittmers1, Jacqueline Comstock2, Camille Poirier3
1Marine Biological Laboratory, Woods Hole, MA 02543, USA; Ocean EcoSystems Biology Unit, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel 24148, Germany.
Current biology : CB
|November 19, 2024
概括
马古利斯细菌,难以捉摸的细菌,揭示了进化对蓝藻细菌祖先的洞察力. 它们在包括海洋环境在内的各种息地中发现的多样化的血统表明,可能涉及真核细胞的成功殖民策略.
科学领域:
- 微生物学 微生物学
- 进化生物学 进化生物学
- 基因组学就是基因组学.
背景情况:
- 马古利斯细菌是未培养的细菌,对于了解菌的进化和氧气光合作用至关重要.
- 这种候选类型包括Riflemargulisbacteria,Termititenax和Marinamargulisbacteria,它们存在于不同的环境中.
研究的目的:
- 研究马古利斯细菌的多样性和进化关系,特别是海洋血统.
- 探索海洋藻细菌与真核宿主之间的生态作用和潜在相互作用.
主要方法:
- 从光和黄昏区域分成部分的大小的海洋样本的分析.
- 野生海洋原生体的基因组测序,以获取Marinamargulisbacteria数据.
- 基因组学分析,包括元基因组组装基因组 (MAG) 和单增强基因组 (SAG).
主要成果:
- 在海洋样本中,marmargulisbacteria amplicons显示出不寻常的分布模式.
- 基因组数据揭示了与未培养的Stramenopila和Opisthokonta原体相关的独特的海洋菌菌群.
- 确定了新的谱系,划分为淡水,海洋鱼和沉积物/低毒基.
结论:
- 马古利斯细菌表现出了显著的息地多样性,表明了成功的殖民策略.
- 这些发现表明,Margulisbacteria有一个保存的生态战略,可能涉及与真核细胞的共生关系.
更多相关视频
09:58Preparation of Prokaryotic and Eukaryotic Organisms Using Chemical Drying for Morphological Analysis in Scanning Electron Microscopy SEM
Published on: January 7, 2019
19.1K
14:38Establishment of Microbial Eukaryotic Enrichment Cultures from a Chemically Stratified Antarctic Lake and Assessment of Carbon Fixation Potential
Published on: April 20, 2012
11.4K
相关概念视频
01:30Bacterial 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...
01:28Anoxygenic 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...
01:30Anoxygenic Photosynthesis
1
Anoxygenic photosynthesis is a phototrophic process that captures light energy to drive carbon fixation without producing molecular oxygen. Unlike oxygenic photosynthesis, which utilizes water as an electron donor and releases oxygen, anoxygenic phototrophs use alternative electron donors such as hydrogen sulfide (H₂S), elemental sulfur (S⁰), or thiosulfate (S₂O₃²⁻). This process is carried out by diverse groups of bacteria, including purple bacteria, green...
1
01:21Green Algae
Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
01:23Red Algae
Red algae, also known as rhodophytes, are primarily found in marine environments, though some species inhabit freshwater and terrestrial ecosystems. These organisms exist in both unicellular and multicellular forms, with some multicellular varieties reaching macroscopic sizes.As phototrophic organisms, red algae contain chlorophyll a; however, their chloroplasts lack chlorophyll b. Instead, they possess phycobiliproteins, which serve as major light-harvesting pigments, similar to those found in...
01:26Oxygenic Photosynthesis
1
Oxygenic photosynthesis is a fundamental process in which light energy is harnessed to drive the oxidation of water, leading to the production of molecular oxygen (O₂), adenosine triphosphate (ATP), and nicotinamide adenine dinucleotide phosphate (NADPH). This process is essential for sustaining aerobic life on Earth and is primarily carried out by cyanobacteria, algae, and plants. The core of oxygenic photosynthesis lies in the thylakoid membranes, where chlorophyll pigments facilitate...
1