Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (3): 575-581.DOI: 10.3969/j.issn.1004-1524.2023.03.10

• Animal Science • Previous Articles     Next Articles

Effects of sublethal doses of dinotefuran on genes expression and enzymes activities related to immune and detoxification in foragers of Apis mellifera ligustica

ZHANG Yuhao1(), MA Weihua2, LIU Jinjia1, MA Xiumei1, JIANG Yusuo1,*()   

  1. 1. College of Animal Sciences, Shanxi Agricultural University, Taigu 030801, Shanxi, China
    2. College of Horticulture, Shanxi Agricultural University, Taigu 030801, Shanxi, China
  • Received:2021-09-06 Online:2023-03-25 Published:2023-04-07

Abstract:

To determine sublethal doses of dinotefuran to Apis mellifera ligustica and explore the effects of sublethal doses of dinotefuran on the expression of immune detoxification genes and enzyme activities on Apis mellifera ligustica, in this study, the feeding trials was used to determine the virulence curve of dinotefuran to Apis mellifera ligustica. The effects of LC20 and LC50 dinotefuran on the relative expressions of Abaecin, Apidaecins, Defensin-1, Hymenoptaecin, AChE-2, PPO, GST and Cyp450 mRNA were investigated by qRT-PCR. Determination of changes in the activities of PPO, AChE, SOD, GST, CAT in Apis mellifera ligustica. The LC20 and LC50 of dinotefuran on Apis mellifera ligustica determined by feeding trials were 0.458 mg·L-1 and 0.988 mg·L-1. Compared with the control group, the expression levels of PPO, Apidaecins, Defensin-1, Hymenoptaecin genes were significantly (P<0.05) up-regulated in the LC20 group. Apidaecins, In LC50 group, the expression of AChE-2, PPO, GST, Cyp450, Apidaecins, Defensin-1 showed a significant up-regulation trend, and the expression of Hymenoptaecin and Abaecin showed a significant down-regulation trend. In additon, the expression levels of Abaecin and Hymenoptaecin in the LC50 group were significantly lower than those in the LC20 group. The expression levels of AChE-2, PPO, GST, Cyp450, Apidaecins in the LC50 group were significantly higher than those in the LC20 group. Compared with the control group, the activities of AChE, CAT and SOD of LC20 group decreased significantly. Compared with the control group, the activities of AChE, PPO, CAT and SOD of LC50 group decreased significantly. In conclusion, dinotefuran inhibits gene expression of Abaecin and Hymenoptaecin, and has an inducing effect on Apidaecins, Defensin-1, AChE-2, PPO, GST, Cyp450 affects the normal immune system of Apis mellifera ligustica. The decline of AChE, PPO, CAT and SOD enzyme activities indicates the damage of dinotefuran to the detoxification system of Apis mellifera ligustica. Our stduy provides a further basis for further research on the effects of sublethal dose dinotefuran on the metabolism and physiology of Apis mellifera ligustica.

Key words: Apis mellifera ligustica, dinotefuran, sublethal effect, immune detoxification, enzyme activity

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