TY - JOUR
T1 - Complete hunting cycle of Dionaea muscipula
T2 - Consecutive steps and their electrical properties
AU - Volkov, Alexander G.
AU - Pinnock, Monique Renée
AU - Lowe, Dennell C.
AU - Gay, Ma'Resha S.
AU - Markin, Vladislav S.
N1 - Funding Information:
This work was supported by the National Science Foundation (Grant No. HRD0811507 ) and by Henry C. McBay Research Fellowship (UNCF).
PY - 2011/1/15
Y1 - 2011/1/15
N2 - The total hunting cycle of the Venus flytrap consists of five stages: 1. Open state → 2. Closed state → 3. Locked state → 4. Constriction and digestion → 5. Semi-open state → 1. Open state. The opening of the trap after digestion consists of two steps: opening of the lobes, and changing of their curvature from concave to convex shape. Uncouplers carbonylcyanide-4-trifluoromethoxyphenyl hydrazone (FCCP) and carbonylcyanide-3-chlorophenylhydrazone (CCCP) inhibit the trap from opening for two weeks and antracene-9-carboxylic acid inhibits the trap from constricting. Different stages of the hunting cycle have different electrical characteristics. The biologically closed electrochemical circuits in the Venus flytrap are analyzed using the charged capacitor method. If the initial voltage applied to the Venus flytrap is 0.5. V or greater, changing the polarity of the electrodes between the midrib and one of the lobes results in a rectification effect and in different kinetics of discharge capacitance. These effects can be caused by the fast transport of ions through ion channels. The electrical properties of the Venus flytrap were investigated and equivalent electrical circuits within the upper leaf were proposed to explain the experimental data.
AB - The total hunting cycle of the Venus flytrap consists of five stages: 1. Open state → 2. Closed state → 3. Locked state → 4. Constriction and digestion → 5. Semi-open state → 1. Open state. The opening of the trap after digestion consists of two steps: opening of the lobes, and changing of their curvature from concave to convex shape. Uncouplers carbonylcyanide-4-trifluoromethoxyphenyl hydrazone (FCCP) and carbonylcyanide-3-chlorophenylhydrazone (CCCP) inhibit the trap from opening for two weeks and antracene-9-carboxylic acid inhibits the trap from constricting. Different stages of the hunting cycle have different electrical characteristics. The biologically closed electrochemical circuits in the Venus flytrap are analyzed using the charged capacitor method. If the initial voltage applied to the Venus flytrap is 0.5. V or greater, changing the polarity of the electrodes between the midrib and one of the lobes results in a rectification effect and in different kinetics of discharge capacitance. These effects can be caused by the fast transport of ions through ion channels. The electrical properties of the Venus flytrap were investigated and equivalent electrical circuits within the upper leaf were proposed to explain the experimental data.
KW - Charged capacitor method
KW - Electrical circuits
KW - Electrical signaling
KW - Electrophysiology
KW - Plant cell electrostimulation
KW - Venus flytrap
UR - http://www.scopus.com/inward/record.url?scp=78650027924&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78650027924&partnerID=8YFLogxK
U2 - 10.1016/j.jplph.2010.06.007
DO - 10.1016/j.jplph.2010.06.007
M3 - Article
C2 - 20667624
AN - SCOPUS:78650027924
SN - 0176-1617
VL - 168
SP - 109
EP - 120
JO - Journal of Plant Physiology
JF - Journal of Plant Physiology
IS - 2
ER -