Real-time monitoring of plant stresses via chemiresistive profiling of leaf volatiles by a wearable sensor
Real-time monitoring of plant stresses via chemiresistive profiling of leaf volatiles by a wearable sensor
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DOI：
10.1016/j.matt.2021.06.009
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发表时间：
2021-07-07
期刊：
影响因子：
18.9
通讯作者：
Wei, Qingshan
中科院分区：
文献类型：
--
作者：
Li, Zheng;Liu, Yuxuan;Wei, Qingshan
目前，对植物病原体感染等植物逆境的测定依赖于耗时且复杂的分析技术。在这里，我们报告了一种叶片可连接的抗化学性传感器阵列，用于挥发性有机化合物(VOCs)的实时指纹识别，从而实现对植物疾病的非侵入性和早期诊断，例如由致病疫霉引起的晚疫病。这种隐形传感器贴片将一系列基于石墨烯的传感材料和灵活的银纳米线电极集成在受kirigami启发的可伸缩衬底上，可以将应变干扰降至最低。传感器贴片已经安装在活的番茄植株上，以快速响应低ppm浓度的关键植物挥发物(S 20)。多路传感器阵列能够准确检测和分类13种植物挥发物，分类准确率为97%。这种可穿戴传感器贴片最早在接种后4d用于诊断番茄晚疫病，并在1h内诊断机械伤害等非生物胁迫。
Determination of plant stresses such as infections by plant pathogens is currently dependent on time-consuming and complicated analytical technologies. Here, we report a leaf-attachable chemiresistive sensor array for real-time fingerprinting of volatile organic compounds (VOCs) that permits noninvasive and early diagnosis of plant diseases, such as late blight caused by Phytophthora infestans. The imperceptible sensor patch integrates an array of graphene-based sensing materials and flexible silver nanowire electrodes on a kirigami-inspired stretchable substrate, which can minimize strain interference. The sensor patch has been mounted on live tomato plants to profile key plant volatiles at low-ppm concentrations with fast response ( 20 s). The multiplexed sensor array allows for accurate detection and classification of 13 individual plant volatiles with 97% classification accuracy. The wearable sensor patch was used to diagnose tomato late blight as early as 4 days post inoculation and abiotic stresses such as mechanical damage within 1 h.