Laskowska I, Leszczynski B, Markowski J
Department of Biochemistry, Agricultural & Pedagogic University, Siedlce, Poland.
Exp Toxicol Pathol. 1999 Jul;51(4-5):357-9. doi: 10.1016/S0940-2993(99)80021-9.
Changes in activity of detoxifying enzymes, involved in metabolism of glutathione in bird cherry-oat aphid during its host alternation have been investigated. Glutathione transferase (GST) and glutathione reductase (GR) activity was found in homogenates from tissues of the bird cherry-oat aphid, Rhopalosiphum padi (L.). The highest activity of the enzymes was recorded in winged migrants that fly from bird cherry (Prunus padus L.), the winter host onto cereals a summer host. Before the migration an increase in activity of the glutathione transferase and glutathione reductase within tissues of winged migrants was observed. When the migrants started to feed on cereals, GST activity further increased and GR activity decreased. The significance of the R. padi glutathione transferase and reductase in detoxification of plant allelochemicals while the aphid host-plants alternation is discussed.
对稠李燕麦蚜在寄主交替过程中参与谷胱甘肽代谢的解毒酶活性变化进行了研究。在禾谷缢管蚜（Rhopalosiphum padi (L.)）的组织匀浆中发现了谷胱甘肽转移酶（GST）和谷胱甘肽还原酶（GR）活性。这些酶的最高活性记录在有翅迁移蚜中，它们从冬季寄主稠李（Prunus padus L.）飞到夏季寄主谷物上。在迁移之前，观察到有翅迁移蚜组织内谷胱甘肽转移酶和谷胱甘肽还原酶的活性增加。当迁移蚜开始取食谷物时，GST活性进一步增加，而GR活性下降。讨论了禾谷缢管蚜谷胱甘肽转移酶和还原酶在蚜虫寄主植物交替过程中对植物化感物质解毒的意义。
