Acoustic radiation force on a long cylinder, and potential sound transduction by tomato trichomes

Xiangjun Peng, Yifan Liu, Wei He, Ethan D. Hoppe, Lihong Zhou, Fengxian Xin, Elizabeth S. Haswell, Barbara G. Pickard, Guy M. Genin, Tian Jian Lu

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Acoustic transduction by plants has been proposed as a mechanism to enable just-in-time up-regulation of metabolically expensive defensive compounds. Although the mechanisms by which this “hearing” occurs are unknown, mechanosensation by elongated plant hair cells known as trichomes is suspected. To evaluate this possibility, we developed a theoretical model to evaluate the acoustic radiation force that an elongated cylinder can receive in response to sounds emitted by animals, including insect herbivores, and applied it to the long, cylindrical stem trichomes of the tomato plant Solanum lycopersicum. Based on perturbation theory and validated by finite element simulations, the model quantifies the effects of viscosity and frequency on this acoustic radiation force. Results suggest that acoustic emissions from certain animals, including insect herbivores, may produce acoustic radiation force sufficient to trigger stretch-activated ion channels.

Original languageEnglish
Pages (from-to)3917-3926
Number of pages10
JournalBiophysical Journal
Volume121
Issue number20
DOIs
StatePublished - Oct 18 2022

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