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Related Concept Videos

Microbe-Plant Interactions01:09

Microbe-Plant Interactions

Microbe-plant interactions represent a dynamic spectrum of associations shaped by intricate chemical signaling. These interactions can be neutral, beneficial, or detrimental, and profoundly influence plant physiology, growth, and ecosystem function. The plant microbiome, comprising bacteria, fungi, archaea, protists, and viruses, plays a pivotal role in mediating these effects through surface colonization, internal colonization, or systemic symbiosis.Mutualistic associations, particularly with...
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Related Experiment Video

Updated: Jun 1, 2026

Repeatable Stair-step Assay to Access the Allelopathic Potential of Weedy Rice (Oryza sativa ssp.)
09:00

Repeatable Stair-step Assay to Access the Allelopathic Potential of Weedy Rice (Oryza sativa ssp.)

Published on: January 28, 2020

Invasive knotweed affects native plants through allelopathy.

Craig Murrell1, Esther Gerber, Christine Krebs

  • 1CABI Europe Switzerland, Rue des Grillons 1, Delémont, Switzerland.

American Journal of Botany
|May 27, 2011
PubMed
Summary
This summary is machine-generated.

Allelopathy, the chemical inhibition of one plant by another, significantly impacts native plants invaded by Fallopia × bohemica (knotweed). Mechanical control effectively reduced these allelopathic effects, suggesting a management strategy.

Related Experiment Videos

Last Updated: Jun 1, 2026

Repeatable Stair-step Assay to Access the Allelopathic Potential of Weedy Rice (Oryza sativa ssp.)
09:00

Repeatable Stair-step Assay to Access the Allelopathic Potential of Weedy Rice (Oryza sativa ssp.)

Published on: January 28, 2020

Area of Science:

  • Ecology
  • Plant Biology
  • Invasive Species Management

Background:

  • Plant invasions can disrupt native ecosystems through various mechanisms.
  • Allelopathy, the release of biochemicals by one plant to inhibit another, is increasingly recognized as a significant factor in plant invasions.
  • Fallopia × bohemica (knotweed) is an aggressive invasive species known to form monocultures, with preliminary evidence suggesting allelopathy plays a role.

Purpose of the Study:

  • To investigate the role of allelopathy in the invasiveness of Fallopia × bohemica.
  • To assess the impact of Fallopia × bohemica on native European plant communities.
  • To evaluate the effectiveness of activated carbon and mechanical control in mitigating the suppressive effects of Fallopia × bohemica.

Main Methods:

  • Experimental communities of native European plants were established with Fallopia × bohemica.
  • Activated carbon was added to soil to neutralize allelochemicals.
  • Mechanical control involved single or repeated cutting of Fallopia × bohemica shoots to assess its impact on plant growth and allelopathy.

Main Results:

  • The addition of activated carbon significantly reduced the suppressive impact of Fallopia × bohemica on native forbs, indicating a strong allelopathic effect.
  • Regular cutting of Fallopia × bohemica shoots was as effective as activated carbon in reducing its suppressive effects.
  • Mechanical control, specifically regular cutting, effectively inhibited rhizome growth and mitigated apparent allelopathic effects.

Conclusions:

  • The ecological impact of Fallopia × bohemica extends beyond resource competition, with a substantial allelopathic component.
  • Regular mechanical control can successfully eliminate the allelopathic effects of Fallopia × bohemica.
  • Further research is required to understand the specific allelochemicals involved, their persistence in soil, and the long-term ecological consequences for effective knotweed management and restoration.