Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Factors Influencing Microbial Growth: Temperature01:27

Factors Influencing Microbial Growth: Temperature

189
Microorganisms display remarkable adaptations, enabling them to thrive in diverse ecological niches across a wide range of temperatures. Temperature profoundly influences microbial growth by affecting enzymatic activity, membrane fluidity, and other cellular processes.Each microorganism operates within a specific temperature range defined by three cardinal points: minimum, optimum, and maximum. Below the minimum temperature, membranes lose fluidity, halting transport processes. Above the...
189
Overview of Archaea01:29

Overview of Archaea

137
Archaea, named after the Archaean eon, represent a unique domain of life, distinct from bacteria and eukaryotes, with remarkable traits. Their cellular and molecular features, ecological adaptability, and industrial relevance highlight their importance in understanding life processes and leveraging biotechnology.Cellular and Molecular CharacteristicsA defining feature of archaea is their unique membrane composition. Archaeal membranes contain ether-linked isoprenoid lipids, which confer...
137
Environmental Applications of Microorganisms01:30

Environmental Applications of Microorganisms

242
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...
242
Microbial Fermentation01:23

Microbial Fermentation

358
Fermentation is a crucial anaerobic metabolic process that enables microbes to derive energy from sugar without relying on oxygen or an electron transport chain. This process is fundamental to various biological and industrial applications and is classified based on the metabolic products generated.Role of Pyruvate in FermentationPyruvate and its derivatives serve as key electron acceptors in fermentative pathways. The oxidation of NADH to regenerate NAD+ is essential for the continuation of...
358
Carbon-dioxide Fixation01:28

Carbon-dioxide Fixation

84
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...
84
Bioremediation00:46

Bioremediation

20.1K
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.
20.1K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Responses of Soil Carbon Release to Freeze-Thaw Cycles Mediated by Carbon Availability at Regional and Global Scales.

Global change biology·2026
Same author

Abrupt permafrost thaw drives exceptional carbon release across the Tibetan Plateau.

Nature communications·2026
Same author

Microbial Community Traits and Necromass Dynamics Shape Soil Carbon Accumulation.

Global change biology·2026
Same author

Much Larger Whole-Profile Soil Organic Carbon Stocks on the Qinghai-Tibet Plateau Than Previously Reported.

Global change biology·2026
Same author

Key role of moss in supplementing nitrogen for plant growth under warming in a permafrost ecosystem.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Dataset about Warming Effects on Carbon Cycling and Greenhouse Gas Fluxes in Permafrost Ecosystems.

Scientific data·2026

相关实验视频

Updated: Sep 11, 2025

Removal of Exogenous Materials from the Outer Portion of Frozen Cores to Investigate the Ancient Biological Communities Harbored Inside
09:06

Removal of Exogenous Materials from the Outer Portion of Frozen Cores to Investigate the Ancient Biological Communities Harbored Inside

Published on: July 3, 2016

8.2K

在永久土突然融化后,微生物碳使用效率提高.

Shuqi Qin1,2, Guanqin Wang1,2,3, Dianye Zhang1,2

  • 1State Key Laboratory of Forage Breeding-by-Design and Utilization, Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China.

Proceedings of the National Academy of Sciences of the United States of America
|August 12, 2025
PubMed
概括

在永久土融化后,微生物碳利用效率 (CUE) 增加,提高了土壤碳稳定性. 这一发现对于预测永久土地区气候变化影响至关重要.

关键词:
微生物碳使用效率效率.微生物群落中的微生物群落.永久土的融化正在发生.土壤的可用性土壤的可用性

更多相关视频

Simulating Temperature in a Soil Incubation Experiment
08:39

Simulating Temperature in a Soil Incubation Experiment

Published on: October 28, 2022

3.1K
Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats
13:38

Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats

Published on: October 26, 2019

8.0K

相关实验视频

Last Updated: Sep 11, 2025

Removal of Exogenous Materials from the Outer Portion of Frozen Cores to Investigate the Ancient Biological Communities Harbored Inside
09:06

Removal of Exogenous Materials from the Outer Portion of Frozen Cores to Investigate the Ancient Biological Communities Harbored Inside

Published on: July 3, 2016

8.2K
Simulating Temperature in a Soil Incubation Experiment
08:39

Simulating Temperature in a Soil Incubation Experiment

Published on: October 28, 2022

3.1K
Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats
13:38

Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats

Published on: October 26, 2019

8.0K

科学领域:

  • 环境科学 环境科学
  • 微生物学 微生物学
  • 气候科学 气候科学

背景情况:

  • 永久土融化对土壤碳动态产生重大影响,这是气候预测中的一个关键不确定性.
  • 微生物碳利用效率 (CUE) 是理解土壤碳循环的关键指标,但对永久土融化的反应知之甚少.
  • 永久土的突然融化会改变微生物群落和营养素的可用性,可能会影响CUE.

研究的目的:

  • 用实验数据研究微生物CUE对永久土突然融化的反应.
  • 为了确定微生物CUE变化的驱动因素在解永久土环境.
  • 评估改变微生物CUE对土壤碳稳定性和气候反的影响.

主要方法:

  • 利用了27年的永久土融化序列和西藏高原的5个额外的热岩位点.
  • 采用了基质独立的18O追踪方法来测量微生物CUE.
  • 分析了土壤的特性,微生物群落的组成 (真菌与细菌的比例,复制体的丰富性) 和的可用性.

主要成果:

  • 在所有研究地点,在永久土崩后,在上层土壤 (0-10厘米) 微生物CUE的增加始终被观察到.
  • 微生物生长的增加和CUE与微生物群落的变化有关 (更高的真菌:细菌比率,更多的复制菌) 和土壤的可用性增加.
  • 这些变化表明微生物衍生的碳在土壤中的沉积增强.

结论:

  • 永久土突然融化导致微生物CUE增加,可能提高土壤碳稳定性.
  • 描述微生物CUE及其驱动因素对于准确地建模永久土碳气候反的气候模型至关重要.
  • 这些发现突出了微生物过程在调节碳循环的重要性,在融化永久土生态系统中.