结构和Ulva proliferera生理过程之间的因果关系作为绿色潮的致病物种
Baixue Sun1, Xinyu Zhao2, Tongfei Qu1
1College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China.
The Science of the total environment
|September 11, 2024
概括
有害的藻类繁殖,就像黄海的绿色潮一样,与结构有关. 含量的变化会影响Ulva prolifera的生长和生理过程,影响开花的动态.
科学领域:
- 海洋生物学 海洋生物学
- 欧洲化研究的研究.
- 藻类开花研究研究
背景情况:
- 有害藻类繁殖 (HAB) 正在增加,原因是缩,但与营养结构的直接因果关系往往不清楚.
- Ulva prolifera导致黄海绿色潮 (YSGTs),这是一个重要的HAB事件.
- 了解宏对营养变化的生理反应对于HAB管理至关重要.
研究的目的:
- 为了确定结构和Ulva prolifera的生理过程之间的因果关系.
- 研究海水成分如何影响U. prolifera中的关键酶和信号分子.
- 阐明氧化 (NO) 在调解U. prolifera对不同条件的反应中的作用.
主要方法:
- 进行现场和实验室实验,分析海水中和营养物质的变化.
- 测量了关键酶的活性:酸盐减少酶 (NR),谷氨酸合成酶 (GS) 和谷氨酸脱酶 (GDH).
- 评估了结构对氧化 (NO) 含量和抗氧化剂防御系统的影响.
主要成果:
- 观察到海水中成分的显著时空变化,NO3-N从南向北下降.
- 足够的溶解无机 (DIN) 增加了NR和GS活动,增强了吸收;增加的溶解有机 (DON) 比例上调了GDH活动.
- 结构的变化调节了NR活性,这调节了NO水平,增强了抗氧化系统,并保持了U. prolifera的高光合作用活性.
结论:
- 支持了结构和Ulva prolifera生理过程,包括酶活性和NO信号之间的直接因果关系.
- 氧化 (NO) 作为一个关键的信号分子,在不同的条件下增强抗氧化剂防御系统和光合作用活动.
- 这些发现加深了对宏藻对优化反应的理解,并为管理YSGT等HAB的策略提供了信息.
相关概念视频
Primary Production
23.6K
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.
23.6K
Overview of Nitrogen Metabolism
7.9K
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...
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
7.9K
The Nitrogen Cycle
51.8K
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...
51.8K
Overview of Metabolism
29.6K
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...
29.6K
2° Amines to N-Nitrosamines: Reaction with NaNO2
4.1K
Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.
4.1K
Key Elements for Plant Nutrition
18.7K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
18.7K


