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Diacci, Chiara; Abedi, Tayebeh; Lee, Jee Woong; Gabrielsson, Erik O.; Berggren, Magnus; Simon, Daniel T.; Niittylä, Totte; Stavrinidou, Eleni
iScience, 01/2021, Letnik: 24, Številka: 1Journal Article
Bioelectronic devices that convert biochemical signals to electronic readout enable biosensing with high spatiotemporal resolution. These technologies have been primarily applied in biomedicine while in plants sensing is mainly based on invasive methods that require tissue sampling, hindering in-vivo detection and having poor spatiotemporal resolution. Here, we developed enzymatic biosensors based on organic electrochemical transistors (OECTs) for in-vivo and real-time monitoring of sugar fluctuations in the vascular tissue of trees. The glucose and sucrose OECT-biosensors were implanted into the vascular tissue of trees and were operated through a low-cost portable unit for 48hr. Our work consists a proof-of-concept study where implantable OECT-biosensors not only allow real-time monitoring of metabolites in plants but also reveal new insights into diurnal sugar homeostasis. We anticipate that this work will contribute to establishing bioelectronic technologies as powerful minimally invasive tools in plant science, agriculture and forestry. Display omitted •In vivo, real-time monitoring of sugars fluctuations in trees with OECTs for 48hr•OECTs reveal previously uncharacterized diurnal sucrose fluctuations in aspen•Multienzyme functionalization of OECT for detection of sucrose•Operation of sensors with low-cost portable unit Biotechnology; Bioelectronics; Plant Physiology
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