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  3. Research Domains
  5. Biological Sciences
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  9. Phycology (incl. Marine Grasses)
  11. Norsesquiterpenes From Lolium Perenne And Their Replacement Control Of An Invasive Plant, Ageratina Adenophora, Through Allelopathy

Norsesquiterpenes from Lolium perenne and Their Replacement Control of an Invasive Plant, Ageratina adenophora, Through Allelopathy

Wenbo Shi1, Tong An1, Xiaomin Yang1

  • 1College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang 110866, China.

Molecules (Basel, Switzerland)
|June 13, 2025

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View abstract on PubMed

Summary
This summary is machine-generated.

Lolium perenne effectively suppresses invasive Ageratina adenophora growth through potent allelopathic norsesquiterpenes. These compounds are released via root secretion and rainwater leaching, offering a natural control mechanism.

Area of Science:

  • Plant Science
  • Ecology
  • Biochemistry

Background:

  • Lolium perenne is a valuable forage crop with demonstrated success in controlling invasive plants.
  • The specific allelopathic mechanisms by which L. perenne controls Ageratina adenophora remain unclear.
  • Understanding these mechanisms is crucial for developing sustainable invasive species management strategies.

Purpose of the Study:

  • To elucidate the allelopathic mechanism of L. perenne in controlling the invasive plant Ageratina adenophora.
  • To identify and characterize the specific allelochemicals responsible for this control.
  • To investigate the release pathways and environmental content of these compounds.

Main Methods:

  • Competition assays were conducted to assess the growth inhibition of A. adenophora by L. perenne.
Keywords:
Ageratina adenophoraLolium perenneallelopathynorsesquiterpenes

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  • Seven norsesquiterpenes were isolated and identified from L. perenne using phytochemical techniques.
  • Allelopathic effects of isolated compounds on A. adenophora and Lactuca sativa were evaluated.
  • Ultra Performance Liquid Chromatography Tandem Mass Spectrometry (UPLC-MS/MS) was used to determine the environmental release and content of active compounds.

    • Main Results:

    • L. perenne significantly inhibited the growth of A. adenophora in competition assays.
    • Seven norsesquiterpenes were identified, with most showing potent allelopathic activity against A. adenophora and Lactuca sativa.
    • Active norsesquiterpenes were confirmed to be released into the environment through root secretion and rainwater leaching.
    • The environmental content of these active compounds was quantified.

    Conclusions:

    • L. perenne exerts its invasive control effect on A. adenophora primarily through the release of potent allelopathic norsesquiterpenes.
    • These findings provide a mechanistic understanding of L. perenne's role in invasive species replacement.
    • The identified norsesquiterpenes represent potential candidates for developing novel, eco-friendly herbicides for invasive plant management.
    replacement control