SERS-Enabled Sensitive Detection of Plant Volatile Biomarker Methyl Salicylate
SERS-Enabled Sensitive Detection of Plant Volatile Biomarker Methyl Salicylate
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SERS 灵敏检测植物挥发性生物标志物水杨酸甲酯
DOI：
10.1021/acs.jpcc.1c09185
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Zhao, Jing
中科院分区：
文献类型：
--
作者：
Song, Chen;Wang, Yongchen;Lei, Yu;Zhao, Jing
挥发性有机化合物（VOCs）含有植物侵染的独特信息；因此，它们可以作为可靠的植物病害生物标志物。在各种挥发性有机化合物中，水杨酸甲酯（MeSA）在致病性感染期间大量释放，因为MeSA不仅在感染部位释放，而且作为一种全身反应在整个植物中释放。在这项工作中，4-巯基苯基硼酸（MPBA）功能化的金纳米颗粒被用作表面增强拉曼散射（SERS）光谱的MeSA蒸汽传感探针。SERS传感器可检测低至0.608 ppb （S/N = 3）的MeSA，具有良好的内、间重复性。拉曼信号变化的起源可归因于MPBA和MeSA之间微弱的可逆分子间相互作用。该研究表明，SERS传感平台在无创和快速监测作物健康的挥发性生物标志物方面具有很大的前景。
Volatile organic compounds (VOCs) contain unique information about infection of plants; thus, they can be used as reliable biomarkers for plant diseases. Among various VOCs, methyl salicylate (MeSA) is released abundantly during pathogenic infections because MeSA is emitted not only at the infected site but also throughout the whole plant as a systemic response. In this work, 4-mercaptophenylboronic acid (MPBA) functionalized Au nanoparticles were employed as a probe for MeSA vapor sensing via surface-enhanced Raman scattering (SERS) spectroscopy. The SERS sensors can detect MeSA as low as 0.608 ppb (S/N of 3) with excellent intra- and interassay reproducibility. The origin of Raman signal change was attributed to the weak, reversible intermolecular interaction between MPBA and MeSA. This study demonstrates that the SERS sensing platform holds great promise in noninvasive and fast monitoring of volatile biomarkers for crop health.
影响因子：
3.7
作者：
Chulhai, Dhabih V.;Chen, Xing;Jensen, Lasse
通讯作者：
Jensen, Lasse