Plant inbreeding and prior herbivory influence the attraction of caterpillars ( Manduca sexta ) to odors of the host plant Solanum carolinense (Solanaceae)
Abstract
• Premise of this study: The mediation of plant–insect interactions by plant odors has been studied extensively, but most previous work has focused on documenting the role of constitutive and herbivore‐ or pathogen‐induced plant volatiles as foraging cues for insect herbivores and their natural enemies. Relatively little work has explored genotypic variation in plant‐odor profiles within species, and few studies have addressed the perception and use of olfactory cues by lepidopteran larvae or other herbivores during feeding. • Methods: We examined the effects of plant breeding (inbred vs. outbred individuals) and plant exposure to prior herbivory on the preferences of caterpillars ( Manduca sexta ) for odors of Solanum carolinense in leaf‐disc and whole‐plant choice assays. • Key results: Second‐ and third‐instar larvae of M. sexta clearly and consistently preferred undamaged over herbivore‐damaged plants of both breeding types and also consistently preferred inbred over outbred plants that had the same damage status. Similar preferences were observed even when plants were covered with bridal‐veil cloth to mask visual cues, demonstrating that olfactory cues influence larval preferences. • Conclusions: The observed preferences are consistent with our previous findings regarding the constitutive and induced volatile profiles of inbred and outbred horsenettle plants and their effects on plant–herbivore interactions. They furthermore correspond to differences in host‐plant quality predicted by previous work and, thus, suggest that naive larvae of M. sexta can accurately assess aspects of host‐plant quality via olfactory cues perceived at a distance.
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Rejection behavior towards leaves is usually associated with a low-quality host or hosts with higher defenses.
“which is usually associated with a low-quality host or hosts with higher defenses90–92.”
From Atmospheric cold plasma alters plant traits and negatively affects the growth and development of fall armyworm in rice (2025) · cites this paper as [92]
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- Authors
- Kariyat, R. R., Scanlon, S. R., Moraski, R. P., Stephenson, A. G., Mescher, M. C., & De Moraes, C. M.
- Affiliations
- Pennsylvania State University (US)
- Venue
- American Journal of Botany
- Publisher
- Wiley
- Published
- 2014-02
- Volume
- 101
- Issue
- 2
- Pages
- 376-380
- ISSN
- 0002-9122 (ISSN-L)
- 1537-2197
- OpenAlex
- W2155737392
- Cited by
- 31
- References
- 33
- Citations by year
- 2025: 3 · 2024: 1 · 2022: 1 · 2021: 4 · 2020: 5 · 2019: 2 · 2018: 3 · 2017: 3 · 2016: 5 · 2015: 3 · 2014: 1
- FWCI
- 4.33
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- American Journal of Botany (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Science Foundation (DEB1050998)
- David and Lucile Packard Foundation
- Topics
- Life Sciences › Agricultural and Biological Sciences › Insect Science › Insect-Plant Interactions and Control
- Life Sciences › Agricultural and Biological Sciences › Insect Science › Insect Pheromone Research and Control
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Lepidoptera: Biology and Taxonomy
- Keywords
- Manduca sexta, Solanum carolinense, plant volatiles, olfactory cues, host plant quality, plant-insect interactions, induced plant volatiles
- MeSH terms
- Animals, Inbreeding, Larva, Odorants, Plant Diseases, Manduca, Plant Leaves, Solanum, Volatile Organic Compounds, Herbivory
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