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Ghirardo, A. ; Brilli, F.*

Analysis of volatile organic compounds.

In: Monitoring Forest Damage with Mass Spectrometry-Based Metabolomics Methods. 2024. 127-186 (Monitoring Forest Damage with Mass Spectrometry-Based Metabolomics Methods)
DOI
Volatile organic compounds (VOCs) are important phytochemicals emitted by plants to cope with a multitude of (a)biotic stresses and to communicate with the surrounding ecosystem. The biosynthesis and emission of VOCs are closely intertwined with photosynthetic and other cellular metabolic processes. While only some plant species constitutively release large amounts of VOCs, their emissions can be induced in any species following exposure to stressful conditions. The complex bouquet of VOCs is shaped during the plant's defense response and represents a chemical fingerprint that identifies species and specific physiological states of plants. Analytical approaches coupling mass spectrometry with either (static and dynamic) enclosure systems or micrometeorological methods provide accurate measurements of VOC emissions at plant or ecosystem levels. Off-line thermal desorption gas chromatography mass spectrometry (TD-GC-MS) relies on adsorbents and pre-concentration during sample collection and is ideal for the chemical identification of VOCs or large-scale sampling. Proton transfer reaction mass spectrometry (PTR-MS) is a real-time technique that allows direct measurements of VOCs without sample collection, which is useful for monitoring changes in VOC emissions and investigating their biosynthesis. Traditionally, analyses of VOC emissions from tree leaves, branches, and above the canopy have been employed to investigate the plant response-to (a)biotic stresses and to evaluate the impact of reactive VOCs (e.g. terpenes) in the atmosphere. However, recent findings highlight how measuring stress-induced VOC emissions can be adopted as a non-invasive method to assess the occurrence of stress conditions in plants, which could be used to monitor the health of forests.
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Publication type Article: Edited volume or book chapter
Corresponding Author
Keywords Ptr-ms ; Stress-induced Emissions ; Td-gc-ms ; Voc ; Volatilome
ISSN (print) / ISBN 9781119868750
Book Volume Title Monitoring Forest Damage with Mass Spectrometry-Based Metabolomics Methods
Quellenangaben Volume: , Issue: , Pages: 127-186 Article Number: , Supplement: ,
Non-patent literature Publications
Institute(s) Research Unit Environmental Simulation (EUS)