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Updated: Jun 5, 2025
Compact Quantum Dots for Single-molecule Imaging
Published on: October 9, 2012
ZnO quantum dots reduce acquisition of huanglongbing pathogen by Diaphorina citri
Wenhua Rao1, Qi Yue1,2, Shang Gao1,2
1Fujian Engineering Research Center for Green Pest Management, Fujian Key Laboratory for Monitoring and Integrated Management of Crop Pests, Fuzhou Scientific Observing and Experimental Station of Crop Pests of Ministry of Agriculture and Rural Affairs, Institute of Plant Protection, Fujian Academy of Agricultural Sciences, Fuzhou, China.
Background:
Diaphorina citri Kuwayama is the main vector of the Huanglongbing (HLB) pathogen Candidatus Liberibacter asiaticus (CLas). Therefore, reducing CLas acquisition by D. citri is crucial for controlling the spread of HLB.
Results:
This study aimed to investigate the effect of ZnO quantum dots (ZnO QDs) on CLas acquisition by D. citri. The results showed that ZnO QDs were absorbed by citrus plants and D. citri, inducing reactive oxygen species generation in the intestine and causing intestinal cell apoptosis. The uptake rate of CLas was reduced to 75% and 22.3% after treatment with 2 and 5 mg ∙ mL-1 ZnO QDs, respectively, compared with 100% in the control group. Transcription analysis showed significant changes in the expression of D. citri genes related to apoptosis, oxidative stress, and DNA replication and repair.
Conclusion:
The results suggested that ZnO QDs could efficiently reduce CLas acquisition by D. citri, providing a safe and reliable tool for HLB prevention and control. © 2024 Society of Chemical Industry.
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