A single touch can provide sufficient mechanical stimulation to trigger Venus flytrap closure.

Autor: Burri JT; Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland., Saikia E; Department of Civil, Environmental and Geomatic Engineering, ETH Zurich, Zurich, Switzerland., Läubli NF; Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland., Vogler H; Department of Plant and Microbial Biology and Zurich-Basel Plant Science Center, University of Zurich, Zurich, Switzerland., Wittel FK; Department of Civil, Environmental and Geomatic Engineering, ETH Zurich, Zurich, Switzerland., Rüggeberg M; Department of Civil, Environmental and Geomatic Engineering, ETH Zurich, Zurich, Switzerland.; Swiss Federal Laboratories for Materials Science and Technology-EMPA, Cellulose & Wood Materials Laboratory, Dübendorf, Switzerland., Herrmann HJ; Department of Civil, Environmental and Geomatic Engineering, ETH Zurich, Zurich, Switzerland., Burgert I; Department of Civil, Environmental and Geomatic Engineering, ETH Zurich, Zurich, Switzerland.; Swiss Federal Laboratories for Materials Science and Technology-EMPA, Cellulose & Wood Materials Laboratory, Dübendorf, Switzerland., Nelson BJ; Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland., Grossniklaus U; Department of Plant and Microbial Biology and Zurich-Basel Plant Science Center, University of Zurich, Zurich, Switzerland.
Jazyk: angličtina
Zdroj: PLoS biology [PLoS Biol] 2020 Jul 10; Vol. 18 (7), pp. e3000740. Date of Electronic Publication: 2020 Jul 10 (Print Publication: 2020).
DOI: 10.1371/journal.pbio.3000740
Abstrakt: The carnivorous Venus flytrap catches prey by an ingenious snapping mechanism. Based on work over nearly 200 years, it has become generally accepted that two touches of the trap's sensory hairs within 30 s, each one generating an action potential, are required to trigger closure of the trap. We developed an electromechanical model, which, however, suggests that under certain circumstances one touch is sufficient to generate two action potentials. Using a force-sensing microrobotic system, we precisely quantified the sensory-hair deflection parameters necessary to trigger trap closure and correlated them with the elicited action potentials in vivo. Our results confirm the model's predictions, suggesting that the Venus flytrap may be adapted to a wider range of prey movements than previously assumed.
Competing Interests: The authors have declared that no competing interests exist.
Databáze: MEDLINE
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