The western flower thrips, Frankliniella occidentalis, is a major invasive pest of commercially important crops worldwide. We compared the activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) and the expressions of two putative SOD and two putative POD sequences in second instar larvae and adults after three generations of adaptation to kidney bean and broad bean plants. The results showed that the SOD, POD, and CAT activities in adults were significantly higher than those in the second instar larvae. The SOD activities were significantly higher in both the second instar larvae and the adults fed on kidney bean (Phaseolus vulgaris) plants versus broad bean (Vicia faba) plants, whereas the POD and CAT activities showed the opposite trend. The gene expression data showed that the FoPOD-2 expression levels were lower in the second instar larvae after three generations of feeding on broad bean plants versus kidney bean plants. The expression levels of FoSOD-1 and FoSOD-2, and FoPOD-1 under broad bean plant treatment were higher than those under kidney bean plant treatment. Additionally, gene expression fluctuated among the different generations. Our results indicated that western flower thrips demonstrated plasticity in gene expression and activity of protective enzymes, which is related to their adaptability to the host plants. Western flower thrips can change the expression of protective enzyme genes and enzyme activity in vivo to better adapt to kidney bean and broad bean plants.

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西花蓟马（缨翅目：蓟马科）保护酶对两种豆科植物的反应

西部花蓟马，Frankliniella occidentalis，是世界范围内具有重要商业价值的农作物的主要入侵性害虫。我们比较了三代适应芸豆和蚕豆后二龄幼虫和成虫的超氧化物歧化酶（SOD）、过氧化物酶（POD）和过氧化氢酶（CAT）的活性以及两个推定的 SOD 和两个推定的 POD 序列的表达。植物。结果表明，成虫SOD、POD、CAT活性显着高于二龄幼虫。与蚕豆（Vicia faba）植物相比，以菜豆（Phaseolus vulgaris）植物为食的二龄幼虫和成虫的SOD活性显着更高，而POD和CAT活性则显示出相反的趋势。基因表达数据显示，与芸豆植物相比，以蚕豆植物为食的三代后，二龄幼虫的 FoPOD-2 表达水平较低。蚕豆处理下FoSOD-1、FoSOD-2和FoPOD-1的表达水平高于菜豆处理。此外，基因表达在不同世代之间存在波动。我们的研究结果表明，西花蓟马在基因表达和保护酶活性方面表现出可塑性，这与其对寄主植物的适应性有关。西花蓟马可以改变体内保护酶基因的表达和酶活性，以更好地适应菜豆和蚕豆植物。蚕豆处理下FoSOD-1、FoSOD-2和FoPOD-1的表达水平高于菜豆处理。此外，基因表达在不同世代之间存在波动。我们的研究结果表明，西花蓟马在基因表达和保护酶活性方面表现出可塑性，这与其对寄主植物的适应性有关。西花蓟马可以改变体内保护酶基因的表达和酶活性，以更好地适应菜豆和蚕豆植物。蚕豆处理下FoSOD-1、FoSOD-2和FoPOD-1的表达水平高于菜豆处理。此外，基因表达在不同世代之间存在波动。我们的研究结果表明，西花蓟马在基因表达和保护酶活性方面表现出可塑性，这与其对寄主植物的适应性有关。西花蓟马可以改变体内保护酶基因的表达和酶活性，以更好地适应菜豆和蚕豆植物。我们的研究结果表明，西花蓟马在基因表达和保护酶活性方面表现出可塑性，这与其对寄主植物的适应性有关。西花蓟马可以改变体内保护酶基因的表达和酶活性，以更好地适应菜豆和蚕豆植物。我们的研究结果表明，西花蓟马在基因表达和保护酶活性方面表现出可塑性，这与其对寄主植物的适应性有关。西花蓟马可以改变体内保护酶基因的表达和酶活性，以更好地适应菜豆和蚕豆植物。