Volatiles as inducers and suppressors of plant defense and immunity — origins, specificity, perception and signaling
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Volatiles from attacked plants, microbes and herbivores can enhance plant defenses. However, the absence of volatiles rather than their presence has sometimes been associated with enhanced defense, suggesting that volatiles may also act as defense suppressors. Recent work provides a potential mechanistic explanation for these observations by showing that volatile cues can modulate different hormonal pathways, including jasmonate (JA), salicylic acid (SA) and auxin (IAA) signaling. Many of these pathways interact with each other through crosstalk. Thus, volatiles may suppress plant defenses through negative hormonal crosstalk. Hormonal crosstalk may also allow plants to integrate different volatile cues to respond specifically and appropriately to environmental change.
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Volatile secondary metabolites such as terpenoids, green-leaf volatiles, and aromatic compounds can also regulate plant defenses.
“Apart from glucosinolates and benzoxazinoids, volatile secondary metabolites such as terpenoids, green-leaf volatiles, and aromatic compounds can also regulate plant defenses (Baldwin et al., 2006;Godard et al., 2008;Erb, 2018;Bouwmeester et al., 2019).”
From Plant Secondary Metabolites as Defenses, Regulators, and Primary Metabolites: The Blurred Functional Trichotomy (2020) · cites this paper as Erb, 2018
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Erb, M., & Kliebenstein, D. J. (2020) · Plant Physiology · doi:10.1104/pp.20.00433 · Cited by 1,333 · see citing works
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- Authors
- Erb, M.
- Affiliations
- University of Bern (CH)
- Corresponding author
- Erb, Matthias
- ORCID
- Erb, Matthias
- Venue
- Current Opinion in Plant Biology
- Publisher
- Elsevier BV
- Published
- 2018-08
- Volume
- 44
- Pages
- 117-121
- ISSN
- 1369-5266 (ISSN-L)
- OpenAlex
- W2802138132
- Cited by
- 155
- References
- 2
- Citations by year
- 2026: 10 · 2025: 23 · 2024: 18 · 2023: 17 · 2022: 24 · 2021: 24 · 2020: 15 · 2019: 19 · 2018: 5
- FWCI
- 1.76
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Current Opinion in Plant Biology (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- Bern Open Repository and Information System (University of Bern) (submittedVersion, cc-by-nc-nd)
- Funders
- Swiss National Science Foundation (155781, 160786)
- European Research Council (ERC-2016-STG 714239)
- University of Bern
- Topics
- Life Sciences › Agricultural and Biological Sciences › Insect Science › Insect-Plant Interactions and Control
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant-Microbe Interactions and Immunity
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Plant biochemistry and biosynthesis
- Keywords
- plant volatiles, plant defense, plant immunity, jasmonic acid signaling, salicylic acid signaling, auxin signaling, hormone crosstalk, herbivore-induced plant volatiles, microbial volatile organic compounds, plant-microbe interactions, plant hormone perception
- MeSH terms
- Cyclopentanes, Indoleacetic Acids, Plant Growth Regulators, Signal Transduction, Salicylic Acid, Oxylipins, Plant Immunity
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