The author of 《Non-invasive plant disease diagnostics enabled by smartphone-based fingerprinting of leaf volatiles》 were Li, Zheng; Paul, Rajesh; Ba Tis, Taleb; Saville, Amanda C.; Hansel, Jeana C.; Yu, Tao; Ristaino, Jean B.; Wei, Qingshan. And the article was published in Nature Plants (London, United Kingdom) in 2019. Formula: C8H8O3 The author mentioned the following in the article:
Plant pathogen detection conventionally relies on mol. technol. that is complicated, time-consuming and constrained to centralized laboratories We developed a cost-effective smartphone-based volatile organic compound (VOC) fingerprinting platform that allows non-invasive diagnosis of late blight caused by Phytophthora infestans by monitoring characteristic leaf volatile emissions in the field. This handheld device integrates a disposable colorimetric sensor array consisting of plasmonic nanocolorants and chemo-responsive organic dyes to detect key plant volatiles at the ppm level within 1 min of reaction. We demonstrate the multiplexed detection and classification of ten individual plant volatiles with this field-portable VOC-sensing platform, which allows for early detection of tomato late blight 2 d after inoculation, and differentiation from other pathogens of tomato that lead to similar symptoms on tomato foliage. Furthermore, we demonstrate a detection accuracy of ≥95% in diagnosis of P. infestans in both laboratory-inoculated and field-collected tomato leaves in blind pilot tests. Finally, the sensor platform has been beta-tested for detection of P. infestans in symptomless tomato plants in the greenhouse setting. In the part of experimental materials, we found many familiar compounds, such as Methyl Salicylate(cas: 119-36-8Formula: C8H8O3)
Methyl Salicylate(cas: 119-36-8) is a natural herbivore-induced plant volatile. It is a naturally occurring product in trees, legumes, exotic plants, vegetables, berries, and the primary constituent of the oil of wintergreen.Methyl Salicylate is produced from salicylic acid.Formula: C8H8O3
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