地中海海草在火山CO2喷口的叶子上加速气循环
Johanna Berlinghof1,2,3, Luis M Montilla4, Friederike Peiffer4,5
1Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn - National Institute of Marine Biology, Ecology and Biotechnology, Naples, Italy. johber@uni-bremen.de.
Communications biology
|March 20, 2024
概括
海洋酸化 (OA) 影响海草生态系统中的循环. 研究表明,在OA下,Posidonia oceanica在叶子微生物群的驱动下增加了的增加,有助于适应.
科学领域:
- 海洋生物学 海洋生物学
- 沿海生态 沿海生态
- 微生物生态学 微生物生态学
背景情况:
- 海草草地是面对日益严重的海洋酸化 (OA) 的重要沿海生态系统.
- (N) 循环对于海草的生产力至关重要,但OA对N转换的影响尚不清楚.
- 了解这些过程是预测海草弹性的关键.
研究的目的:
- 研究海洋酸化 (OA) 对海草叶内 (N) 循环的影响.
- 为了确定OA如何影响Posidonia oceanica中的N增减过程.
- 评估植物微生物群在海草适应OA中的作用.
主要方法:
- 在自然火山CO2通风口进行实地研究,模拟OA条件.
- 对波西多尼亚海洋树叶的固定,化和脱率的分析.
- 描述了形微生物社区结构的特征.
主要成果:
- 在环境条件和酸性条件下,在海草叶上观察到完整的 (N) 循环.
- 海洋酸化 (OA) 增加了与叶子相关的N2固定,更多地促进了植物N的需求.
- 只有在OA下才检测到化潜力,并且通过N2生产增加了N-损失.
- 尽管增加了N损失,但整体余额有利于OA下的增强N收益.
结论:
- 叶子相关的微生物组在海草适应海洋酸化 (OA) 方面发挥着重要作用.
- 在OA下,关键的转化加速,导致海藻的增加.
- 由于微生物组介导的循环,海草可能具有一定程度的抗氧化物耐受性.
相关概念视频
The Carbon Cycle
37.4K
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.
37.4K
The Calvin Benson Cycle
4.5K
Ribulose 1,5- bisphosphate carboxylase/oxygenase (RuBisCo) is a critical enzyme that catalyzes carbon dioxide assimilation during photosynthesis. However, it is an inefficient enzyme, having an extremely slow catalytic rate. A typical enzyme can process about a thousand molecules per second; however, RuBisCo fixes only around three-carbon dioxides per second. Photosynthetic cells compensate for this slow rate by synthesizing very high amounts of RuBisCo, making it the most abundant single...
4.5K
The Nitrogen Cycle
52.1K
Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...
52.1K
Bioremediation
18.3K
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.
18.3K
Overview of Metabolism
30.1K
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...
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...
30.1K
The Sulfur Cycle
44.1K
Sulfur, an important element in the chemical makeup of proteins, is recycled through the atmosphere and aquatic and terrestrial environments. Found in the atmosphere as sulfur dioxide (SO2), sulfur is released by decaying organisms, weathered rocks, geothermal vents, volcanos, and burning fossil fuels. It is deposited into the ecosystem, cycled through the biotic community, and either released back into the atmosphere as gas or deposited in marine sediment for long-term storage and eventual...
44.1K


