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Related Concept Videos

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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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

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Key Elements for Plant Nutrition02:35

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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

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

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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.
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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

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Root nitrogen reallocation: what makes it matter?

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
Summary
This summary is machine-generated.

Plant root nitrogen reallocation supports shoot growth and is influenced by species richness and soil conditions. Understanding these dynamics is key to plant ecology and nutrient cycling.

Keywords:
litter decompositionmicrobial community compositionmycorrhizal symbiosisnutrient remobilizationplant biodiversityroot functional trait

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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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Area of Science:

  • Plant Ecology
  • Nutrient Cycling
  • Plant Physiology

Background:

  • Root nitrogen (N) reallocation, the movement of N from storage pools to support shoot growth, is a critical plant function.
  • This process is underexplored in relation to ecosystem components and plant community dynamics.
  • Understanding N reallocation is vital for comprehending plant adaptation and ecosystem functioning.

Purpose of the Study:

  • To develop innovative frameworks elucidating the connections between root N reallocation and key ecosystem components.
  • To investigate how plant species richness, N-acquisition strategies, and soil properties influence root N reallocation.
  • To explore the trade-offs between root traits, mycorrhizal symbioses, and N reallocation.

Main Methods:

  • Development of novel theoretical frameworks to analyze root N reallocation.
  • Comparative analysis across different plant species and N-acquisition strategies.
  • Examination of soil properties, including litter quality and microbial community structure (fungi-to-bacteria ratios, hyphosphere/rhizosphere dynamics).

Main Results:

  • Root N reallocation increases with plant species richness and diverse N-acquisition strategies, driven by heightened N demand and uptake synergies.
  • Competitive root traits and mycorrhizal symbioses, while beneficial for N uptake, show trade-offs with root N reallocation.
  • N-supply factors like litter quality, soil fungi-to-bacteria ratios, and microbial recruitment attenuate root N reallocation.

Conclusions:

  • Root N reallocation is a complex process modulated by plant community composition and soil environmental factors.
  • The developed frameworks offer new insights into the ecological significance of root N reallocation.
  • Further research into these frameworks can advance our understanding of plant adaptation and ecosystem nutrient dynamics.