Journal
JOURNAL OF EXPERIMENTAL BOTANY
Volume 73, Issue 2, Pages 511-528Publisher
OXFORD UNIV PRESS
DOI: 10.1093/jxb/erab487
Keywords
Defence; green leaf volatiles; growth; photosynthesis; plant-plant communication; primary metabolism; priming; reproduction; secondary metabolism; terpenes; volatile organic compounds
Categories
Funding
- Academy of Finland [309425, 311925]
- Niemi Foundation [20190091]
- Kone Foundation [201905451]
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Plants emit VOCs in response to stimuli, providing information to the community. Receiver plants may experience changes in hormone signaling and metabolism due to VOC exposure. Research on the effects of VOC exposure on receiver plants can help understand its impact on plant growth and reproduction.
It is firmly established that plants respond to biotic and abiotic stimuli by emitting volatile organic compounds (VOCs). These VOCs provide information on the physiological status of the emitter plant and are available for detection by the whole community. In the context of plant-plant interactions, research has focused mostly on the defence-related responses of receiver plants. However, responses may span hormone signalling and both primary and secondary metabolism, and ultimately affect plant fitness. Here we present a synthesis of plant-plant interactions, focusing on the effects of VOC exposure on receiver plants. An overview of the important chemical cues, the uptake and conversion of VOCs, and the adsorption of VOCs to plant surfaces is presented. This is followed by a review of the substantial VOC-induced changes to receiver plants affecting both primary and secondary metabolism and influencing plant growth and reproduction. Further research should consider whole-plant responses for the effective evaluation of the mechanisms and fitness consequences of exposure of the receiver plant to VOCs.
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