The cross-resistance patterns and biochemical characteristics of an imidacloprid-resistant strain of the cotton aphid

  • Chen Xiaokun
    Department of Plant Protection, Shandong Agricultural University
  • Shi Xugen
    College of Agronomy, Jiangxi Agricultural University
  • Wang Hongyan
    Cotton Research Centre, Shandong Academy of Agricultural Sciences
  • Wang Jie
    Department of Plant Protection, Shandong Agricultural University
  • Wang Kaiyun
    Department of Plant Protection, Shandong Agricultural University
  • Xia Xiaoming
    Department of Plant Protection, Shandong Agricultural University

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Other Title
  • ワタアブラムシのイミダクロプリド抵抗性系統が示す交差抵抗性と生化学的特徴

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Abstract

The imidacloprid-resistant strain of Aphis gossypii (RF60) was further selected with imidacloprid to establish the more resistant strain (RF75). After the selection for 15 generations, the resistance ratio relative to the susceptible strain increased from 66.60 to 72.60. The RF75 strain showed different levels of cross-resistance to all the insecticides tested. Synergistic and metabolic enzyme assays suggested that carboxylesterase and cytochrome P450 may play important roles in the imidacloprid resistance.

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