کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4410620 1307555 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Toxic effects of chemical pesticides (trichlorfon and dimehypo) on Dunaliella salina
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Toxic effects of chemical pesticides (trichlorfon and dimehypo) on Dunaliella salina
چکیده انگلیسی

Dunaliella salina, a unicellular green alga of environmental tolerance, was employed as test organism to investigate the toxicity effects of trichlorfon and dimehypo widely used in agriculture and veterinary as pesticides. The influences of trichlorfon and dimehypo on cell growth, β-carotene level, cell morphology changes, and activities of superoxide dismutase (Sod) and catalase (Cat) were investigated. At the concentrations less than 0.050 g L−1 trichlorfon or 0.0005 g L−1 dimehypo, cell responses were similar to control. When treated with 0.075–0.100 g L−1 trichlorfon or 0.001–0.004 g L−1 dimehypo, cell growth and β-carotene levels declined at first and then revived. When concentrations were higher than 0.125 g L−1 trichlorfon or 0.005 g L−1 dimehypo, both cell growth and β-carotene levels decreased until they were undetectable. The 10-d IC50 of trichlorfon and dimehypo on D. salina were 0.179 g L−1 and 0.032 g L−1. Both pollutants could stimulate the increase of Cat activity at a low concentration. Tolerance of D. salina to trichlorfon was obviously higher than that of dimehypo.


► Upper limit tolerance of Dunaliella salina to trichlorfon and dimehypo are 0.125 g L−1 and 0.005 g L−1.
► Both pollutants could stimulate the increase of Cat activity at a low concentration.
► Tolerance of D. salina to trichlorfon was obviously higher than that of dimehypo.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 84, Issue 5, July 2011, Pages 664–670
نویسندگان
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