Scholarlink

<p>The widespread use of synthetic pesticides has raised concerns about their impacts on soil biodiversity and ecosystem functioning, increasing interest in plant-derived compounds as environmentally compatible alternatives. <i>Cannabis sativa</i> L. produces a diverse array of secondary metabolites, including cannabinoids and terpenes, which may act as chemical cues in belowground ecological interactions. This study examined the chemotactic responses of five nematode species – <i>Heterorhabditis bacteriophora</i> (Poinar), <i>Steinernema carpocapsae</i> (Weiser), <i>Steinernema feltiae</i> (Filipjev), <i>Oscheius myriophilus</i> (Poinar), and <i>Phasmarhabditis papillosa</i> (Schneider)— to various concentrations of crude flower extracts of <i>C. sativa</i>. Chemotaxis assays were conducted using an agar-based system, and nematode responses were quantified as overall motility and Chemotaxis Index (CI). Cannabinoid and terpene profiles were determined by HPLC–UV/DAD and GC–MS. Nematode species identity and extract concentration were the primary factors influencing motility and chemotactic behaviour, whereas chemotype extract identity had a minor effect. <i>H. bacteriophora</i>, <i>S. feltiae</i>, and <i>P. papillosa</i> showed positive chemotactic responses (higher CI values) in a species- and concentration-dependent manner, whereas <i>S. carpocapsae</i> and <i>O. myriophilus</i> exhibited mostly neutral responses. Chemotactic behaviour was strongly species-specific and concentration-dependent, with extract identity playing a minor role.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Cannabis flower crude extracts as belowground infochemicals shaping the chemotactic responses of parasitic nematodes

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年4月21日

查看全文
  • Žiga Laznik,
  • Stanislav Trdan,
  • Luka Bitežnik,
  • Roman Štukelj,
  • Marko Flajšman

摘要

The widespread use of synthetic pesticides has raised concerns about their impacts on soil biodiversity and ecosystem functioning, increasing interest in plant-derived compounds as environmentally compatible alternatives. Cannabis sativa L. produces a diverse array of secondary metabolites, including cannabinoids and terpenes, which may act as chemical cues in belowground ecological interactions. This study examined the chemotactic responses of five nematode species – Heterorhabditis bacteriophora (Poinar), Steinernema carpocapsae (Weiser), Steinernema feltiae (Filipjev), Oscheius myriophilus (Poinar), and Phasmarhabditis papillosa (Schneider)— to various concentrations of crude flower extracts of C. sativa. Chemotaxis assays were conducted using an agar-based system, and nematode responses were quantified as overall motility and Chemotaxis Index (CI). Cannabinoid and terpene profiles were determined by HPLC–UV/DAD and GC–MS. Nematode species identity and extract concentration were the primary factors influencing motility and chemotactic behaviour, whereas chemotype extract identity had a minor effect. H. bacteriophora, S. feltiae, and P. papillosa showed positive chemotactic responses (higher CI values) in a species- and concentration-dependent manner, whereas S. carpocapsae and O. myriophilus exhibited mostly neutral responses. Chemotactic behaviour was strongly species-specific and concentration-dependent, with extract identity playing a minor role.