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Volatile terpenes - mediators of plant-to-plant communication.

Plant J. 108, 617-631 (2021)
DOI
Creative Commons Lizenzvertrag
Free by publisher: Publ. Version/Full Text online available 09/2022
Plants interact with other organisms employing volatile organic compounds (VOCs). The largest group of plant-released VOCs are terpenes, comprised of isoprene, monoterpenes and sesquiterpenes. Mono- and sesquiterpenes are well known communication compounds in plant-insect interactions whereas the smallest, most commonly emitted terpene, isoprene, is rather assigned a function in combating abiotic stresses. Recently, it has become evident that different volatile terpenes also act as plant-to-plant signaling cues. Upon being perceived, specific volatile terpenes can sensitize distinct signaling pathways in receiver plant cells, which in turn trigger plant innate immune responses. This vastly extends the range of action of volatile terpenes that not only protect plants from various biotic and abiotic stresses, but also convey information about environmental constraints within and between plants. As a result, plant-insect and plant-pathogen interactions, which are believed to influence each other through phytohormone cross talk, are likely equally sensitive to reciprocal regulation via volatile terpene cues. Here, we review the current knowledge of terpenes as volatile semiochemicals and discuss why and how volatile terpenes make good signaling cues. We discuss how volatile terpenes may be perceived by plants, what are possible downstream signaling events in receiver plants, and how responses to different terpene cues might interact to orchestrate the net plant response to multiple stresses. Finally, we discuss how the signal can be further transmitted to the community level leading to a mutually beneficial community scale response or distinct signaling with near kin.
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Publication type Article: Journal article
Document type Review
Keywords Interaction ; Isoprene ; Monoterpenes ; Plant Communication ; Sesquiterpenes ; Signaling ; Terpenes ; Vocs ; Volatile Organic Compounds; Methyl Jasmonate; Salicylic-acid; Organic-compounds; Biological Functions; Isoprene Emission; Arabidopsis; Biosynthesis; Leaves; Defense; Flowers
ISSN (print) / ISBN 0960-7412
e-ISSN 1365-313X
Quellenangaben Volume: 108, Issue: 3, Pages: 617-631 Article Number: , Supplement: ,
Publisher Wiley
Publishing Place 111 River St, Hoboken 07030-5774, Nj Usa
Reviewing status Peer reviewed
Grants Projekt DEAL
Chinese Scholarship Council
DFG