Engineering
doi:
10.1016/j.eng.2023.11.021
Research
An Implantable and Self-Powered Sensing System for the In Vivo Monitoring of Dynamic H2O2 Level in Plants
a Laboratory of Agricultural Information Intelligent Sensing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
b Innovation Platform of Micro/Nano Technology for Biosensing, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311215, China
Received: 2023-08-15
Revised: 2023-10-27
Accepted: 2023-11-19
Available online: 2024-02-21
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Abstract
The real-time monitoring of hydrogen peroxide (H2O2) is significant for understanding the working mechanism of signal molecules, breeding for stress tolerance, and diagnosing plant health. However, it remains a challenge to realize real-time monitoring of the dynamic H2O2 level in plants. Here, we report an implantable and self-powered sensing system for the continuous monitoring of H2O2 level in plants. A photovoltaic (PV) module is integrated into a sensing system to collect sunlight or artificial light in the planting environment in order to continuously power an implantable microsensor. The transmission process of the H2O2 signal was monitored and analyzed in vivo, and the time and concentration specificity of the H2O2 signal for abiotic stress were resolved. This implantable system provides a promising analysis tool for key signal molecules in plants and might be extended to the real-time monitoring of signaling molecules in other crops.
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