水文季节性推动了鲁山河流域DOM-细菌相互作用
Shanshan Zheng1,2, Fan Feng1, Dongping Liu1
1State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
Microorganisms
|January 28, 2026
概括
水文季节性塑造了河流溶解有机物 (DOM) 和微生物群落. 观察到DOM组成和微生物结构的季节性变化,突出显示了水资源管理的影响.
科学领域:
- 环境化学环境化学
- 微生物学 微生物学
- 生态生态学 生态生态学
背景情况:
- 溶解有机物 (DOM) 对于河流生态系统的功能至关重要.
- 了解DOM-微生物相互作用是河流健康的关键.
- 对这些相互作用的水文控制仍未得到充分研究.
研究的目的:
- 调查水文季节性对Rushan河流域DOM特征和微生物群落的影响.
- 阐明DOM动态和微生物组装之间的关系.
- 为了确定调节微生物DOM转换的途径.
主要方法:
- 综合3D激发发射矩阵光谱 (3D-EEMs) 和并行因子分析 (PARAFAC) 用于DOM表征.
- 采用16S rRNA测序用于微生物社区分析.
- 利用结构方程建模 (SEM) 来量化微生物调节路径.
主要成果:
- 在干旱和潮湿季节之间,PARAFAC确定了不同的DOM特征,蛋白质类和湿类成分差异很大.
- 干旱季节的DOM含有丰富的铁类物质,而潮湿季节的DOM显示出高托类和陆地酸成分.
- 微生物群落因季节不同而有所不同,湿季的α-多样性更高,以蛋白质细菌和Actinobacteriota为主,而干季的Bacteroidota和Verrucomicrobiota则相反.
结论:
- 水文季节性协同调节河流生态系统中的DOM组成和微生物结构.
- 微生物在蛋白质降解和化过程中发挥作用.
- 结果为适应性水质管理策略提供了洞察力.
相关概念视频
Seasoning of Wood
502
Seasoning of wood is a crucial process aimed at reducing and stabilizing the moisture content within the wood to prevent future shrinkage, structural damage, or aesthetic issues once the wood is used in construction. Wood naturally swells when it absorbs moisture and contracts as it dries.
Achieving equilibrium moisture content is the goal of seasoning; this is the point where the wood's moisture content stabilizes to align with the moisture levels of the surrounding environment. Proper...
Achieving equilibrium moisture content is the goal of seasoning; this is the point where the wood's moisture content stabilizes to align with the moisture levels of the surrounding environment. Proper...
502
Biological Clocks and Seasonal Responses
41.7K
The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
41.7K
Energy to Drive Translocation
2.8K
Mitochondrial protein import is powered by two distinct energy sources: ATP hydrolysis and electrochemical potential across the inner membrane. Newly synthesized precursors are bound by cytosolic chaperones of the Hsp70 family, which guide them to the import receptors on the mitochondrial surface. Utilizing the energy of ATP hydrolysis, Hsp70 chaperones transfer these precursors to the TOM receptors on the mitochondrial outer membrane.
Generally, polypeptides are unfolded by two distinct...
Generally, polypeptides are unfolded by two distinct...
2.8K
M-Cdk Drives Transition Into Mitosis
6.5K
Checkpoints throughout the cell cycle serve as safeguards and gatekeepers, allowing the cell cycle to progress in favorable conditions and slow or halt it in problematic ones. This regulation is known as the cell cycle control system.
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
6.5K
Drive-Reduction Theory: Push Theory of Motivation
1.2K
Clark Hull's drive-reduction theory, introduced in the 1940s and 1950s and often termed the "push theory" of motivation, provides a framework for understanding how biological and learned drives influence behavior. Hull suggested that motivation originates from the need to alleviate physiological tension caused by unmet biological necessities. The theory proposes that when a basic need, such as hunger or sleep, goes unfulfilled, it creates an internal imbalance. This imbalance, or...
1.2K
The Tree of Life - Bacteria, Archaea, Eukaryotes
38.3K
The “tree of life” describes the evolution of life and the evolutionary relationships between organisms. The root of the tree is the common ancestor to all life on Earth. All other species radiate from this point, much like the branches of a tree. The numerous tips of these branches on the tree of life represent every living, or extant, species. Extinct species, which are species that no longer exist, can be found towards the center of the tree. Currently, these organisms, both...
38.3K


