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Multitrophic and Multilevel Interactions Mediated by Volatile Organic Compounds.

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|August 28, 2024
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Summary

Plants release volatile organic compounds (VOCs) to communicate with insects, influencing defense and ecosystems. These plant VOCs are key to developing sustainable agriculture and pest control strategies.

Keywords:
aboveground–belowground interactionschemical defense mechanismsgreen leaf volatilesherbivore-induced plant volatilesmultilevel interactionsmultitrophic interactionsvolatile organic compounds

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Area of Science:

  • Plant Science
  • Ecology
  • Chemical Ecology

Background:

  • Plants emit volatile organic compounds (VOCs) for inter-organismal communication.
  • These VOCs play crucial roles in plant defense mechanisms and ecosystem interactions.
  • Herbivore-induced plant volatiles (HIPVs) are a significant focus in understanding plant-insect interactions.

Purpose of the Study:

  • To review the diverse roles of VOCs in plant defense and ecosystem communication.
  • To explore the functions of VOCs in insect behavior, including attraction and defense activation.
  • To highlight the agricultural potential of VOCs for pest management and crop resilience.

Main Methods:

  • Systematic literature search using Boolean operators on Web of Science and Scopus.
  • Analysis of 1093 retrieved articles, with 406 selected for detailed review.
  • Focus on approximately 50% of selected articles concerning herbivore-induced plant volatiles (HIPVs).

Main Results:

  • VOCs significantly influence insect behavior by activating antennae and attracting adults, females, and natural enemies.
  • Specific terpenoids (e.g., α-pinene, β-myrcene) attract natural enemies, altering pest behavior.
  • Compounds like β-ocimene and β-caryophyllene are vital for regulating both aboveground and belowground ecological interactions.

Conclusions:

  • VOCs exhibit multifunctionality in natural ecosystems, impacting direct and indirect plant defenses.
  • Plant VOCs offer significant potential for developing novel, sustainable agricultural pest control strategies.
  • Further research, including comparative and long-term studies, is needed to fully understand VOC dynamics and ecological functions.