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Green leaf volatile production by plants: a meta-analysis.

Maarten Ameye1,2, Silke Allmann3, Jan Verwaeren1

  • 1Department of Applied Bioscience, Faculty of Bioscience Engineering, Ghent University, Valentin Vaerwyckweg 1, B-9000, Ghent, Belgium.

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Summary

Plants release green leaf volatiles (GLVs) as an immediate stress signal. A meta-analysis reveals pathogens induce more GLVs than insects, with distinct plant group responses.

Keywords:
dicotfungusgreen leaf volatile (GLV)herbivoremeta-analysismonocotpathogen

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Area of Science:

  • Plant Science
  • Chemical Ecology
  • Molecular Biology

Background:

  • Plants emit biogenic volatile organic compounds (BVOCs) in response to stress.
  • Green leaf volatiles (GLVs) are abundant BVOCs involved in plant defense and signaling.
  • GLVs are rapidly released upon mechanical or abiotic stress, acting as immediate environmental signals.

Purpose of the Study:

  • To analyze and interpret data on GLV production during biotic stress responses using a meta-analysis.
  • To investigate how different types of stress influence GLV emission quantity and profile.
  • To review current understanding of GLV perception and signaling in plants.

Main Methods:

  • Compiled and interpreted literature data on GLV production during biotic stress.
  • Conducted a meta-analysis to compare GLV release under different stress conditions (wounding, herbivores, pathogens).
  • Analyzed differences in GLV emission between monocots and eudicots.

Main Results:

  • Different attackers and feeding styles increase GLV emission complexity compared to wounding alone.
  • Pathogens induce significantly higher GLV production than insects and wounding.
  • GLV emission profiles show less variation than presumed, with notable differences between monocots and dicots.

Conclusions:

  • GLV emission is modulated by stress type, with pathogens being potent inducers.
  • Plant type (monocot vs. eudicot) influences GLV response.
  • GLVs play a crucial role in plant-environment interactions, signaling, and defense mechanisms.