相关实验视频

Updated: Jun 17, 2025

Resurrection of Dormant Daphnia magna: Protocol and Applications

Resurrection of Dormant Daphnia magna: Protocol and Applications

Published on: January 19, 2018

代谢适应是残骸地下水的高生产率的基础

Betzabe Atencio¹, Eyal Geisler¹, Maxim Rubin-Blum^2,3

¹Department of Environmental Hydrology and Microbiology, Zuckerberg Institute for Water Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Midreshet Ben-Gurion, Israel.

Scientific reports

|August 5, 2024

概括

深沙漠的地下水拥有各种微生物,这些微生物对生物地化学循环至关重要. 这些微生物具有显著的化学合成潜力,这表明含水层是被低估的碳汇.

科学领域:

微生物学微生物学
地质化学地质化学
环境科学环境科学

背景情况:

地下水层是重要的生态热点,为生物地化学循环提供必要的多样化微生物群落.
这些微生物的生态生理学,特别是深层热水层中的化学合成,在盆地规模上仍未得到充分研究.

研究的目的:

研究内盖夫沙漠深层水层中微生物群落的多样性,活动和代谢潜力.
评估这些古老的地下水系统中的化学合成能力和生产率.

主要方法:

从以色列尼格夫沙漠的两个深层水层 (犹大群碳酸盐和库尔努布群努比亚砂岩) 的9个井取样.
微生物社区多样性,活性和代谢潜力的分析,包括对自身养途径的基因鉴定.
化学合成生产率的估计.

主要成果:

化学合成生产率从0.55 ± 0.06到0.82 ± 0.07μg C L−1 d−1.1不等.
60%的转基因组组装基因组 (MAGs) 拥有自营养途径的基因,主要是卡尔文-本森-巴什姆和伍德-Ljungdahl途径.
在这些深层含水层的微生物群落中发现了大量的化学合成能力.

结论:

深层地下微生物群落表现出显著的代谢多功能性,使得高效的碳和能源利用.
含水层的生产力可能被低估,而这些系统可以作为碳汇起到至关重要的作用.
这项研究为探索全球含水层系统中的微生物和生物地化学功能创造了先例.

关键词:

古老的地下水古老的地下水碳固化是一种碳固化的方法.地表深处的地表地下.转基因组学是指转基因组学.初级生产的主要产品.

更多相关视频

The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations

The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations

Published on: August 3, 2016

Impedance Pneumography for Minimally Invasive Measurement of Heart Rate in Late Stage Invertebrates

Impedance Pneumography for Minimally Invasive Measurement of Heart Rate in Late Stage Invertebrates

Published on: April 4, 2020

相关概念视频

Primary Production

Primary Production

The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.

Adaptations that Reduce Water Loss

Adaptations that Reduce Water Loss

Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.

Bioremediation

Bioremediation

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.

Responses to Drought and Flooding

Responses to Drought and Flooding

Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.

Overview of Metabolism

Overview of Metabolism

Living cells constantly carry out various chemical reactions which are necessary for their proper functioning. These reactions are interlinked to one another via multiple pathways. The collection of these chemical reactions is known as metabolism.
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...