Odor receptor derived peptide capable of effectively monitoring sex pheromones of spodoptera frugiperda and biosensor

Abstract

The invention discloses an odor receptor derived peptide capable of effectively monitoring sex pheromones of spodoptera frugiperda and a biosensor, and belongs to the field of biosensors. At present, measures such as sample plot survey and sex traps are commonly used for monitoring the grassland spodoptera, and the problems of poor timeliness, high labor cost, insufficient data continuity and the like exist. In order to solve the problem, the pheromone binding protein-derived peptide provided by the invention has an amino acid sequence as shown in SEQ ID NO: 5, the biosensor comprises a substrate and an interdigital electrode, a single-walled carbon nanotube is attached to the electrode, and the electrode is also connected with an odor receptor-derived peptide. The sensor can specifically detect sex pheromones of spodoptera frugiperda, has no response to 17 plant volatile matters, and can detect sex pheromones released by as low as two live female spodoptera frugiperda under laboratory conditions. The method has application potential in the fields of early pest monitoring, prevention and control efficiency improvement, ecological safety guarantee and the like.

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