Title of article :
Electrical memory in Venus flytrap
Author/Authors :
Volkov، نويسنده , , Alexander G. and Carrell، نويسنده , , Holly and Baldwin، نويسنده , , Andrew and Markin، نويسنده , , Vladislav S.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2009
Pages :
6
From page :
142
To page :
147
Abstract :
Electrical signaling, memory and rapid closure of the carnivorous plant Dionaea muscipula Ellis (Venus flytrap) have been attracting the attention of researchers since the XIX century. The electrical stimulus between a midrib and a lobe closes the Venus flytrap upper leaf in 0.3 s without mechanical stimulation of trigger hairs. Here we developed a new method for direct measurements of the exact electrical charge utilized by the D. muscipula Ellis to facilitate the trap closing and investigated electrical short memory in the Venus flytrap. As soon as the 8 µC charge for a small trap or a 9 µC charge for a large trap is transmitted between a lobe and midrib from the external capacitor, the trap starts to close at room temperature. At temperatures 28–36 °C a smaller electrical charge of 4.1 µC is required to close the trap of the D. muscipula. The cumulative character of electrical stimuli points to the existence of short-term electrical memory in the Venus flytrap. We also found sensory memory in the Venus flytrap. When one sustained mechanical stimulus was applied to only one trigger hair, the trap closed in a few seconds.
Keywords :
Plant memory , electrophysiology , Venus flytrap , Dionaea muscipula Ellis , electrical signaling , Bioelectrochemistry
Journal title :
Bioelectrochemistry
Serial Year :
2009
Journal title :
Bioelectrochemistry
Record number :
1452129
Link To Document :
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