生物质比率调节甲转化和碳固定在甲类植物-微藻共生系统:效率优化和由共同代谢驱动的机制
Xiaoqian Li1, Xiao Lin2, Ziyi Dong1
1School of Environmental Science and Engineering, China-America CRC for Environment & Health of Shandong Province, Shandong University, Qingdao, Shandong, 266237, China; Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong University, Qingdao, Shandong, 266237, China.
Water research
|November 28, 2025
概括
优化甲类植物-微藻比率可以提高甲转化效率. 这种共生系统通过调节新陈代谢相互作用和微生物群落来改善碳固定和稳定性,用于温室气体处理.
科学领域:
- 环境微生物学 环境微生物学
- 生物技术是生物技术.
- 生物地质化学生物地质化学
背景情况:
- 甲类植物-微藻共生为温室气体处理提供了新的生物碳固定方法.
- 由于代谢异质性的低转换效率限制了实际应用.
- 提高代谢稳定性是提高系统性能的关键.
研究的目的:
- 通过调节甲类植物-微藻生物质比率,系统地评估甲 (CH4) 的代谢流.
- 揭示协同作用的机制,增强共生系统的稳定性.
- 提高生物甲转化和碳封存的效率和稳定性.
主要方法:
- 实验调节甲类植物-微藻生物质比率.
- 应用扩展的德贾金-兰道-维维-奥弗比克 (XDLVO) 理论和激光共聚焦显微镜.
- 结构方程建模 (SEM) 和元基因组学分析.
主要成果:
- 最佳的CH4消耗率 (1.1LCH4生物质/d/g生物质) 在1:5的甲类植物与微藻比率下实现.
- 增强的共同聚合和空间互惠的增长在最佳的比例.
- 聚β-基酸盐 (PHB) 对甲消耗有负面影响;其通路基因在最佳比例下降了16%.
- 甲氧化途径基因增加 (1.38倍) 和I型 (1.89倍) 和II型 (1.51倍) 甲营养菌的丰富.
- 碳固定效率提高了16%.
结论:
- 甲类植物-微藻生物质比率对于优化甲转化效率和系统稳定性至关重要.
- 增强的微生物协聚和调节的代谢相互作用推动了系统的性能.
- 这项研究为工程稳定和高效的共生系统为甲缓解和碳封存提供了基础.
更多相关视频
相关概念视频
01:15Metabolism of Chemolithotrophs
728
Chemolithotrophs are microorganisms that obtain energy by oxidizing inorganic molecules such as hydrogen gas (H₂), ammonia (NH₃), reduced sulfur compounds (H₂S, S²⁻), and ferrous iron (Fe²⁺). Unlike heterotrophic organisms that rely on organic carbon, chemolithotrophs transfer electrons from these inorganic donors to the electron transport chain (ETC), generating a proton motive force (PMF) that drives ATP synthesis through oxidative phosphorylation.
728
01:21Green Algae
679
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...
679
01:30Environmental Applications of Microorganisms
911
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
911
01:28Carbon-dioxide Fixation
597
Carbon dioxide fixation in prokaryotes enables the assimilation of inorganic carbon into organic molecules, supporting biosynthetic pathways, sustaining ecosystems, and contributing to the global carbon cycle. It also has industrial applications in carbon capture and bioproduct synthesis. Autotrophic organisms rely on this process to utilize CO₂ as a carbon source in diverse environments.The Calvin CycleThe Calvin cycle is the most widespread carbon fixation mechanism, primarily used by...
597
00:46Bioremediation
22.0K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
22.0K
01:18Amino Acid Catabolism
952
Microorganisms rely on proteins as an essential carbon and energy source, particularly in environments with limited polysaccharides or lipids. However, proteins are too large to cross the plasma membrane unaided, necessitating enzymatic degradation. Microbes secrete extracellular proteases and peptidases that hydrolyze proteins into peptides, which can then be transported across the membrane. Once inside the cell, intracellular proteases degrade these peptides into free amino acids, which...
952