通过耐低温异质化细菌在建筑湿地中提升的去除Pseudomonas umsongensis YL-1:污染物去除,根球效应和细菌相互作用
在PubMed上查看摘要
概括
此摘要是机器生成的。引入 Pseudomonas umsongensis YL-1,一种新型细菌,显著增加了建筑湿地的冬季除. 这种耐低温菌株增强了微生物和植物活动,改善了氨和总的去除率.
科学领域
- 环境微生物学
- 污水处理工程
- 湿地生态系统
背景情况
- 由于微生物和植物活动的减少,建筑湿地在冬季具有较低的除效率.
- 低温显著损害了CW中负责去除的生物过程.
研究的目的
- 评估一种能耐低温的新型细菌Pseudomonas umsongensis YL-1在增强CW中的冬季去除效果.
- 研究P. umsongensis YL-1注射对CW中去除率,酶活性和微生物群体结构的影响.
主要方法
- 隔离和识别一种耐低温的异构化-有氧脱 (HN-AD) 菌株,Pseudomonas umsongensis YL-1.
- 在冬季条件下 (平均温度<10°C) 定期将P. umsongensis YL-1注入种植Iris japonica和Lolium perenne L.的植物中.
- 监测物种 (NH4+-N,TN,NO3-N,NO2-N),根活动,辐射氧损失 (ROL),关键酶活动 (AMO,NAR,NAP) 和功能基因丰度 (nirS,napA,napB).
主要成果
- 用P. umsongensis YL-1接种的CW实现了NH4+-N (95.94-96.16%) 和TN (94.51-94.93%) 的高去除率,排放的NO3-N低于1 mg/L.
- 免疫显著改善了根活性,ROL和AMO,NAR和NAP酶的活动,促进了HN-AD过程.
- P. umsongensis YL-1成功地殖民了根球,增加了它的丰富性,并显著丰富了nirS,napA和napB基因,增强了的转化.
结论
- 用耐低温细菌Pseudomonas umsongensis YL-1进行注射是一种有前途的策略,可以在冬季加强建筑湿地中的去除.
- P. umsongensis YL-1通过提高根活动,氧气供应和关键的酶去除的过程来提高CW性能.
- 该研究确定了根排泄物 (3-甲基-4-和多糖) 作为促进P. umsongensis YL-1殖民和有效性的潜在因素.
相关概念视频
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...
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.
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.
Agricultural Bioremediation
Bioremediation is a useful process in which microbes and bacteria are used to remove toxins and pollutants from the environment. In agricultural practices, the use of fertilizers and pesticides can result in leaching of...
Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of ammonia, ammonium ions, nitrate, nitrite, or nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
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...
Nitrogen is an essential element in biological systems, forming a crucial component of proteins, nucleic acids, and other cellular constituents. Many bacteria and archaea acquire nitrogen in the form of nitrate (NO₃⁻) or ammonia (NH₃), which are then assimilated into biomolecules through specific enzymatic pathways.Assimilatory Nitrate ReductionWhen nitrate enters the cell, it undergoes a two-step reduction process known as assimilatory nitrate reduction. Initially, the enzyme...

