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AAA-2003 / Electrophysiology-of-Mimosa-pudica-L

Certain plants like the Mimosa pudica shows thigmonastic behavior. This is a nastic (rapid) behavior communicated via electrical impulses, called action potentials, within the plant. The motivation of our study is to observe the thigmonastic behavior of the M. Pudica plant by subjecting it to external electrical action potentials applied across the pulvinus and ground. And to find the minimum threshold required to trigger a thigmonastic response artificially in the plant. This observation has been conducted several times under varying specific conditions to find the exact minimum threshold charge that evokes the drooping of the petiole in the plant.
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Applying electric pulse to Mimosa #1

Open rionilty opened 1 year ago

rionilty commented 1 year ago

Hi!

We are working on a project about mimosa plants and we are trying to electrically stimulate it to create dropping effect or make the leaves close. We have tried your circuit but it did not work out somehow. Would you kindly provide us with some tips? How did you exactly put the electrodes for example? Thank you so much!

AAA-2003 commented 1 year ago

Hey! Glad you reached out. I attached one of the electrodes to the pulvinus nodes of the plant and the other one to the soil as a ground electrode. For the node electrode I gently scraped the outer surface of the pulvinus and made a small loop around that area with bare multi-stranded wire. You might want to leave the plant undisturbed for a few hours to allow it resume it’s normal functions. For the ground electrode I cleaned the surface of a nail with sand paper, wrapped a piece of bare wire around it and inserted it into the soil about 2-3cms from the root of the plant. If you still have issues with the drooping effect you can try adding some water, in order to make sure the soil is slightly moist. You can also try a different point of connection other than the ground node, such as the base of the stem(this sometimes works for larger plants). Depending on the type of capacitor you could also try reversing the polarity. I also noticed that sometimes you need to leave the plants undisturbed for a few weeks if you’ve recently re-potted it. Let me know if you have any other questions. Good luck!

On Tue, Aug 8, 2023 at 9:29 PM rionilty @.***> wrote:

Hi!

We are working on a project about mimosa plants and we are trying to electrically stimulate it to create dropping effect or make the leaves close. We have tried your circuit but it did not work out somehow. Would you kindly provide us with some tips? How did you exactly put the electrodes for example? Thank you so much!

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