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Hydration of cement is a chemical reaction between cement particles and water. This process occurs primarily through two mechanisms: through-solution and topochemical. In the through-solution process, anhydrous compounds dissolve into their constituents, hydrates form in the solution, and then precipitate from the supersaturated solution. The topochemical process involves solid-state reactions at the cement particle surface. The through-solution process dominates the topochemical process at the...
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Updated: Aug 20, 2025

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Why do plants silicify?

Félix de Tombeur1, John A Raven2, Aurèle Toussaint3

  • 1CEFE, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France; School of Biological Sciences and Institute of Agriculture, The University of Western Australia, Perth, Australia.

Trends in Ecology & Evolution
|November 25, 2022
PubMed
Summary
This summary is machine-generated.

Silicon (Si) accumulation in plants has higher costs than previously thought. Understanding Si

Keywords:
costsecosystem functioningfitnessfunctional traitgrasslandsilicification

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Area of Science:

  • Plant Ecology
  • Biogeochemistry

Background:

  • Seminal research highlights silicon's (Si) importance in plant biology and ecology.
  • Current studies often focus on Si supply and stress mitigation, overlooking broader ecological roles.
  • The ecological significance of Si across biological levels is complex and challenging to quantify.

Purpose of the Study:

  • To re-evaluate the ecological significance of silicon (Si) in plants.
  • To explore the costs associated with Si accumulation.
  • To connect Si dynamics with plant fitness, environmental factors, and ecosystem functions.

Main Methods:

  • Literature review and synthesis of existing research on silicon in plant ecology.
  • Conceptual framework development linking Si accumulation costs to fitness components.
  • Discussion of Si's role in trait-based ecology and ecosystem functioning.

Main Results:

  • The costs of silicon accumulation in plants are greater than commonly acknowledged.
  • Potential links exist between Si accumulation, plant fitness (growth, survival, reproduction), and environmental conditions.
  • Silicon's role in ecosystem functioning and biome expansion warrants further investigation.

Conclusions:

  • Silicon is potentially more critical in trait-based plant ecology than currently recognized.
  • Further research is needed to bridge knowledge gaps regarding Si's contribution to plant success and biome dynamics.
  • A comprehensive understanding of Si's ecological role requires considering its costs and benefits across various biological scales.