Acta Agriculturae Zhejiangensis ›› 2024, Vol. 36 ›› Issue (1): 67-74.DOI: 10.3969/j.issn.1004-1524.20230190

• Animal Science • Previous Articles     Next Articles

Natural products screening with resistance to honeybee viruses

HUANG Zhichu(), ZHOU Nihong, LIU Yao, ZHENG Huoqing()   

  1. College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
  • Received:2023-02-17 Online:2024-01-25 Published:2024-02-18

Abstract:

In order to identify natural products with anti-honeybee virus effects, 9 natural products (thymol, artemisinin, catalpol, piperine, theobromine, amygdalin, caffeic acid, hesperidin and ρ-coumaric acid) were tested in lab conditions. RT-PCR was used to measure the inhibitory effect of the 9 natural products on honeybee viruses after 7 days. Additionally, the effects of the natural products on the expression of honeybee immunity-related genes were also determined. The results of the exogenous inoculation of Israeli acute paralysis virus (IAPV) virus suggest that feeding honeybees with 10 μmol·L-1 thymol for 7 days can significantly reduce the viral load of IAPV and Sacbrood virus (SBV). Without external vaccination of the virus, after feeding with 10 μmol · L-1 thymol for 7 days, the viral load of IAPV and SBV carried by honeybees was significantly reduced compared with the control group, and the transcription level of vitellogenin gene was significantly increased. After screening, it was found that honeybees fed with 10 μmol · L-1 thymol can achieve good antiviral effects after 7 days, and thymol can become a potential component in the development of anti-honeybee virus drugs.

Key words: honeybee, natural product, viral disease, immunity

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