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Benchmarking organic electrochemical transistors for plant electrophysiology

Armada-Moreira, Adam and Diacci, Chiara and Dar, Abdul Manan and Berggren, Magnus and Simon, Daniel T. and Stavrinidou, Eleni (2022). Benchmarking organic electrochemical transistors for plant electrophysiology. Frontiers in Plant Science. 13 , 916120
[Research article]

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Plants are able to sense and respond to a myriad of external stimuli, using different signal transduction pathways, including electrical signaling. The ability to monitor plant responses is essential not only for fundamental plant science, but also to gain knowledge on how to interface plants with technology. Still, the field of plant electrophysiology remains rather unexplored when compared to its animal counterpart. Indeed, most studies continue to rely on invasive techniques or on bulky inorganic electrodes that oftentimes are not ideal for stable integration with plant tissues. On the other hand, few studies have proposed novel approaches to monitor plant signals, based on non-invasive conformable electrodes or even organic transistors. Organic electrochemical transistors (OECTs) are particularly promising for electrophysiology as they are inherently amplification devices, they operate at low voltages, can be miniaturized, and be fabricated in flexible and conformable substrates. Thus, in this study, we characterize OECTs as viable tools to measure plant electrical signals, comparing them to the performance of the current standard, Ag/AgCl electrodes. For that, we focused on two widely studied plant signals: the Venus flytrap (VFT) action potentials elicited by mechanical stimulation of its sensitive trigger hairs, and the wound response of Arabidopsis thaliana. We found that OECTs are able to record these signals without distortion and with the same resolution as Ag/AgCl electrodes and that they offer a major advantage in terms of signal noise, which allow them to be used in field conditions. This work establishes these organic bioelectronic devices as non-invasive tools to monitor plant signaling that can provide insight into plant processes in their natural environment.

Authors/Creators:Armada-Moreira, Adam and Diacci, Chiara and Dar, Abdul Manan and Berggren, Magnus and Simon, Daniel T. and Stavrinidou, Eleni
Title:Benchmarking organic electrochemical transistors for plant electrophysiology
Series Name/Journal:Frontiers in Plant Science
Year of publishing :2022
Article number:916120
Number of Pages:11
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Botany
Keywords:plant electrophysiology, organic electrochemical transistor (OECT), organic electronics, Venus flytrap, Arabidopsis thaliana
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Additional ID:
Type of IDID
Web of Science (WoS)000837122100001
ID Code:28752
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Forest Genetics and Plant Physiology
Deposited By: SLUpub Connector
Deposited On:02 Sep 2022 11:48
Metadata Last Modified:02 Sep 2022 11:51

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