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Published on February 11, 2009; 10.1104/pp.108.134536

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Received January 9, 2009
Accepted February 8, 2009

Biologically Closed Electrical Circuits in Venus Flytrap

Alexander G. Volkov *, Holly Carrell , and Vladislav S. Markin

Department of Chemistry and Biochemistry, Oakwood University, 7000 Adventist Blvd., Huntsville, AL 35896, USA; Department of Neurology, University of Texas, Southwestern Medical Center, Dallas, TX 75390-8813, USA

* Corresponding author; email: agvolkov{at}yahoo.com; gvolkov@oakwood.edu.

The Venus flytrap is a marvel of plant electrical, mechanical and biochemical engineering. The rapid closure of the Venus flytrap upper leaf in about 0.1 s is one of the fastest movements in the plant kingdom. We found earlier that the electrical stimulus between a midrib and a lobe closes the Venus flytrap upper leaf without mechanical stimulation of trigger hairs. The Venus flytrap can accumulate small subthreshold charges, and when the threshold value is reached, the trap closes. Here we investigated the electrical properties of the upper leaf of the Venus flytrap and proposed the equivalent electrical circuit in agreement with the experimental data.




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A. Pavlovic, V. Demko, and J. Hudak
Trap closure and prey retention in Venus flytrap (Dionaea muscipula) temporarily reduces photosynthesis and stimulates respiration
Ann. Bot., November 3, 2009; (2009) mcp269v1.
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