Morphing structures in the Venus flytrap

Vladislav S. Markin, Alexander G. Volkov

Research output: Chapter in Book/Report/Conference proceedingChapter

11 Scopus citations

Abstract

Venus flytrap is a marvelous plant that intrigued scientists since times of Charles Darwin. This carnivorous plant is capable of very fast movements to catch insects. Mechanism of this movement was debated for a long time. Here, the most recent Hydroelastic Curvature Model is presented. In this model the upper leaf of the Venus flytrap is visualized as a thin, weakly curved elastic shell with principal natural curvatures that depend on the hydrostatic state of the two surface layers of cell, where different hydrostatic pressures are maintained. Unequal expansion of individual layers A and B results in bending of the leaf, and it was described in terms of bending elasticity. The external triggers, either mechanical or electrical, result in the opening of pores connecting these layers; water then rushes from the upper layer to the lower layer, and the bilayer couple quickly changes its curvature from convex to concave and the trap closes. Equations describing this movement were derived and verified with experimental data. The whole hunting cycle from catching the fly through tightening, through digestion, and through reopening the trap was described.

Original languageEnglish (US)
Title of host publicationPlant Electrophysiology
Subtitle of host publicationSignaling and Responses
PublisherSpringer-Verlag Berlin Heidelberg
Pages1-31
Number of pages31
ISBN (Electronic)9783642291104
ISBN (Print)3642291090, 9783642291098
DOIs
StatePublished - Feb 1 2012

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ASJC Scopus subject areas

  • Medicine(all)
  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

Markin, V. S., & Volkov, A. G. (2012). Morphing structures in the Venus flytrap. In Plant Electrophysiology: Signaling and Responses (pp. 1-31). Springer-Verlag Berlin Heidelberg. https://doi.org/10.1007/978-3-642-29110-4_1