Antioxidant defenses during early developmental stages in tetraploid rainbow trout, Oncorhynchus mykiss
محل انتشار: مجله علوم زیستی خاورمیانه، دوره: 21، شماره: 5
سال انتشار: 1402
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 85
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شناسه ملی سند علمی:
JR_CJES-21-5_001
تاریخ نمایه سازی: 31 خرداد 1403
چکیده مقاله:
Antioxidant defense status was examined during early developmental stages of rainbow trout, Oncorhynchus mykiss, as affected by heat shock (HS) treatment to induce tetraploidy. Samples were collected at ۳۸۵۰ degree-min post-fertilization at ۱۰ °C and at eyed, hatch, swim-up, in addition to fry stages to determine the activity of catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GPx), and levels of vitamin C, A and E as well as malondialdehyde (MDA). HS treatment caused a significant reduction in survival, but not affected growth compared to the control. CAT and SOD activities peaked at hatch, whereas GPx activity reached a maximum at the swim-up stage, showing similar patterns, however, significantly higher activities in the HS group. Vitamin levels were at their minimum at the hatch in both groups, while significantly lower in the HS groups. Vitamin levels were at their highest at the fry stage, with the exception of low vitamin E in the HS group. The levels of MDA showed a steady increase during development, with consistently higher levels in the HS group. These results suggest that HS treatment and/or tetraploidy status cause high oxidative stress, as evidenced by higher activity of antioxidant enzymes and MDA levels, and lower levels of vitamins.
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نویسندگان
Hajar Sadat Tabatabaei Pozveh
Department of Natural Resources, Isfahan University of Technology, Isfahan, ۸۴۱۵۶-۸۳۱۱۱, Iran
Salar Dorafshan
Department of Natural Resources, Isfahan University of Technology, Isfahan, ۸۴۱۵۶-۸۳۱۱۱, Iran
Fatemeh Paykan Heyrati
Department of Natural Resources, Isfahan University of Technology, Isfahan, ۸۴۱۵۶-۸۳۱۱۱, Iran
Majid Talebi
Department of Biotechnology, College of Agriculture, Isfahan University of Technology, Isfahan, ۸۴۱۵۶-۸۳۱۱۱, Iran
Tillmann J. Benfey
Department of Biology, University of New Brunswick, Fredericton, New Brunswick, E۳B ۶E۱, Canada
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