کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4421217 1308506 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Chronic accumulation of cadmium and its effects on antioxidant enzymes and malondialdehyde in Oxya chinensis (Orthoptera: Acridoidea)
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Chronic accumulation of cadmium and its effects on antioxidant enzymes and malondialdehyde in Oxya chinensis (Orthoptera: Acridoidea)
چکیده انگلیسی

The accumulation of cadmium (Cd) and its effects on antioxidant enzyme activities and malondialdehyde (MDA) levels of Chinese rice grasshopper (Oxya chinensis) were evaluated under the laboratory conditions. Our results showed that Cd accumulation in O. chinensis exhibited a concentration-dependent increase in both males and females under Cd pollution. Environmental Cd can lead to the absorption of large quantities of Cd, which induces oxidative damage in insects by altering antioxidant defense enzyme systems. Our results demonstrated that Cd stress caused a significant decrease in glutathione peroxidase (GPx) levels and a significant increase in superoxide (SOD) dismutase and catalase (CAT) activities. In the grasshoppers, the MDA content was also enhanced, with an increase in Cd concentrations and a positive correlation between them; for females from second instar nymphs to the adult stage, R2 was 0.6467, 0.9136, 0.6516, 0.942 and 0.7182, whereas for males, it was 0.6467, 0.8239, 0.9302, 0.7861, 0.8632, respectively. We also observed differences in the effects of Cd between grasshoppers of different developmental stages and genders, which suggested that the insect’s developmental stage and sex should be considered when studying enzyme activity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecotoxicology and Environmental Safety - Volume 74, Issue 5, July 2011, Pages 1355–1362
نویسندگان
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