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Related Concept Videos

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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Elements and Compounds01:27

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Pure substances consist of only one type of matter. A pure substance can be an element or a compound. An element consists of only one type of atom, while a compound consists of two or more types of atoms held together by a chemical bond.
Elements
Elements are classified as atomic or molecular based on the nature of their basic units. They are unique forms of matter with specific chemical and physical properties that cannot break down into smaller substances by ordinary chemical reactions. There...
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Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
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Periodic Classification of the Elements04:00

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The periodic table arranges atoms based on increasing atomic number so that elements with the same chemical properties recur periodically. When their electron configurations are added to the table, a periodic recurrence of similar electron configurations in the outer shells of these elements is observed. Because they are in the outer shells of an atom, valence electrons play the most important role in chemical reactions. The outer electrons have the highest energy of the electrons in an atom...
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Classification of Elements and Compounds02:54

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Pure substances consist of only one type of matter. A pure substance can be an element or a compound. An element consists of only one type of atom, while a compound consists of two or more types of atoms held together by a chemical bond. Elements are classified as atomic or molecular based on the nature of their basic units.
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The plant cell wall gives plant cells shape, support, and protection. As a cell matures, its cell wall specializes according to the cell type. For example, the parenchyma cells of leaves possess only a thin, primary cell wall.
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Hydroponics: A Versatile System to Study Nutrient Allocation and Plant Responses to Nutrient Availability and Exposure to Toxic Elements
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Global changes alter plant multi-element stoichiometric coupling.

Dashuan Tian1, Peter B Reich2,3, Han Y H Chen4

  • 1Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing, 100101, China.

The New Phytologist
|September 27, 2018
PubMed
Summary
This summary is machine-generated.

Global change impacts plant nutrient balance beyond carbon, nitrogen, and phosphorus. This study reveals how nine elements interact, proposing a new framework for understanding plant stoichiometry under climate change.

Keywords:
global changesmacroelementmeta-analysismicroelementnatural environmental variationnutrient balanceplant functionssoil nutrient

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Area of Science:

  • Ecology
  • Biogeochemistry
  • Plant Physiology

Background:

  • Plant elemental stoichiometry is vital for ecosystem functions.
  • Current understanding is limited to Carbon:Nitrogen:Phosphorus (C:N:P) ratios.
  • Global change effects on broader elemental balance are poorly understood.

Purpose of the Study:

  • To evaluate stoichiometric variations of nine elements in plants under global change.
  • To synthesize findings from meta-analysis and natural gradient observations.
  • To propose a new stoichiometric framework integrating nutrient availability and demand.

Main Methods:

  • Meta-analysis of 112 global change experiments.
  • Synthesis of 1900 species observations along natural gradients in China.
  • Analysis of plant nutrient ratios (e.g., N:K, P:Ca) in response to N, P, warming, and precipitation changes.

Main Results:

  • Increased soil N and P enhanced plant N and P ratios with base cations (K, Ca, Mg).
  • Warming decreased N and P ratios with base cations.
  • Precipitation changes showed contrasting effects in experiments versus natural environments.
  • Plant elemental coupling is influenced by both soil nutrient availability and plant nutrient demand.

Conclusions:

  • Plant stoichiometry involves more than C:N:P and is sensitive to global change factors.
  • A new framework is proposed, considering plant nutrient demand alongside soil availability.
  • This research provides a comprehensive view of plant elemental variations under global change.