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Herbivory-induced volatiles function as defenses increasing fitness of the native plant Nicotiana attenuata in nature

Open access
Schuman, Meredith C, Barthel, Kathleen, Baldwin, Ian T·2012·eLife

Abstract

From an herbivore's first bite, plants release herbivory-induced plant volatiles (HIPVs) which can attract enemies of herbivores. However, other animals and competing plants can intercept HIPVs for their own use, and it remains unclear whether HIPVs serve as an indirect defense by increasing fitness for the emitting plant. In a 2-year field study, HIPV-emitting N. attenuata plants produced twice as many buds and flowers as HIPV-silenced plants, but only when native Geocoris spp. predators reduced herbivore loads (by 50%) on HIPV-emitters. In concert with HIPVs, plants also employ antidigestive trypsin protease inhibitors (TPIs), but TPI-producing plants were not fitter than TPI-silenced plants. TPIs weakened a specialist herbivore's behavioral evasive responses to simulated Geocoris spp. attack, indicating that TPIs function against specialists by enhancing indirect defense.

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Metadata

Authors
Schuman, M. C., Barthel, K., & Baldwin, I. T.
Venue
eLife
Published
2012-10-15
Volume
1
Pages
e00007-e00007
ISSN
2050-084X (ISSN-L)
OpenAlex
W2165089107
Cited by
194
References
1
FWCI
18.83
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Herbivory-induced volatiles function as defenses increasing fitness of the native plant Nicotiana attenuata in nature. https://app.cochat.ai/papers/10.7554/elife.00007
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Schuman, M. C., Barthel, K., & Baldwin, I. T. (2012). Herbivory-induced volatiles function as defenses increasing fitness of the native plant Nicotiana attenuata in nature. eLife. https://doi.org/10.7554/elife.00007

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