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相关概念视频

Overview of Nitrogen Metabolism01:20

Overview of Nitrogen Metabolism

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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...
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The Nitrogen Cycle01:49

The Nitrogen Cycle

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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...
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The Roles of Bacteria and Fungi in Plant Nutrition02:11

The Roles of Bacteria and Fungi in Plant Nutrition

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Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.
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Key Elements for Plant Nutrition02:35

Key Elements for Plant Nutrition

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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...
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Overview of Metabolism01:40

Overview of Metabolism

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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...
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Other Nuclides: 31P, 19F, 15N NMR01:16

Other Nuclides: 31P, 19F, 15N NMR

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Many organic, inorganic, and biological molecules contain spin-half nuclei such as nitrogen-15, fluorine-19, and phosphorus-31. As a result, NMR studies of these nuclei have found extensive applications in chemical and biological research.
While fluorine-19 and phosphorous-31 have high natural abundances (100%) and positive gyromagnetic ratios, nitrogen-15 has a low natural abundance and a negative gyromagnetic ratio. However, nitrogen-15 is still preferred over nitrogen-14 (which has a...
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相关实验视频

Updated: Jun 24, 2025

Microplot Design and Plant and Soil Sample Preparation for 15Nitrogen Analysis
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Microplot Design and Plant and Soil Sample Preparation for 15Nitrogen Analysis

Published on: May 10, 2020

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根性重新分配:什么让它变得重要?

Ruzhen Wang1, Feike A Dijkstra2, Xingguo Han3

  • 1School of Life Sciences, Hebei University, Baoding 071002, China; Erguna Forest-Steppe Ecotone Ecosystem Research Station, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.

Trends in plant science
|June 2, 2024
PubMed
概括
此摘要是机器生成的。

植物根的重新分配支持芽生长,并受到物种丰富和土壤状况的影响. 了解这些动态是植物生态和营养循环的关键.

关键词:
垃圾的分解 垃圾的分解微生物群落的组成.菌根的共生体是菌根的共生体营养物质的重新调动营养的重新调动.植物生物多样性植物生物多样性根的功能性特征 根的功能性特征

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Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O
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Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O

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An Optimized Rhizobox Protocol to Visualize Root Growth and Responsiveness to Localized Nutrients
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An Optimized Rhizobox Protocol to Visualize Root Growth and Responsiveness to Localized Nutrients

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相关实验视频

Last Updated: Jun 24, 2025

Microplot Design and Plant and Soil Sample Preparation for 15Nitrogen Analysis
08:44

Microplot Design and Plant and Soil Sample Preparation for 15Nitrogen Analysis

Published on: May 10, 2020

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Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O
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Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O

Published on: October 7, 2020

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An Optimized Rhizobox Protocol to Visualize Root Growth and Responsiveness to Localized Nutrients
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An Optimized Rhizobox Protocol to Visualize Root Growth and Responsiveness to Localized Nutrients

Published on: October 22, 2018

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科学领域:

  • 植物生态学植物生态学
  • 营养素循环循环的过程
  • 植物生理学 植物生理学

背景情况:

  • 根部 (N) 的重新分配,即从储存池中移动N以支持芽生长,是植物的一个关键功能.
  • 这一过程与生态系统组件和植物群落动态相关,尚未得到充分探索.
  • 了解N重新分配对于理解植物适应和生态系统功能至关重要.

研究的目的:

  • 开发创新的框架,阐明根N重新分配和关键生态系统组件之间的联系.
  • 调查植物物种丰富性,N获取策略和土壤特性如何影响根N重新分配.
  • 探索根特征,菌根共生和N重新分配之间的权衡.

主要方法:

  • 开发新的理论框架来分析根N重新分配.
  • 在不同的植物物种和N-获取策略之间进行比较分析.
  • 检查土壤特性,包括垃圾质量和微生物群落结构 (真菌与细菌的比率,低/低层动态).

主要成果:

  • 根 N 的重新分配随着植物物种的丰富性和各种 N 获取策略的增加而增加,这是由 N 需求和吸收协同作用的增加所推动的.
  • 竞争性根特征和菌根共生,虽然有利于N吸收,但与根N重新分配显示权衡.
  • 垃圾质量,土壤真菌与细菌的比率以及微生物招募等N供应因素会减弱根的N重新分配.

结论:

  • 根N重新分配是一个复杂的过程,由植物群体组成和土壤环境因素调节.
  • 开发的框架为重新分配N根的生态意义提供了新的见解.
  • 对这些框架的进一步研究可以促进我们对植物适应和生态系统营养动态的理解.