کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8853804 | 1618903 | 2018 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Simultaneous exposure of sulphur and calcium hinder As toxicity: Up-regulation of growth, mineral nutrients uptake and antioxidants system
ترجمه فارسی عنوان
قرار گرفتن در معرض همزمان با گوگرد و کلسیم به عنوان سمیت: تنظیم مقررات رشد، جذب مواد مغذی مواد معدنی و سیستم آنتی اکسیدان ها
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کلمات کلیدی
سیستم آنتیاکسیدان آرسنیک، کلسیم، مواد مغذی معدنی، استرس اکسیداتیو، گوگرد،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
چکیده انگلیسی
The current study was carried out to investigate the role of exogenous sulphur (K2SO4: S; 60â¯mgâ¯Sâ¯kgâ1 sand) and calcium (CaCl2: Ca; 250â¯mg Caâ¯kgâ1 sand) individually as well as in combination (S + Ca) in ameliorating the inhibitory effect of As (Na2HAsO4·7H2O: As1; 15â¯mg Asâ¯kgâ1 sand and As2; 30â¯mg Asâ¯kgâ1 sand) by analyzing biomass accumulation, mineral nutrients uptake, photosynthetic pigments content, redox status of the cell, enzymatic and non-enzymatic defense system in Brassica juncea L. seedlings. Biomass accumulation, uptake of mineral nutrients, photosynthetic pigments (chlorophyll a, b and carotenoids) content and the activity of proline dehydrogenase (ProDH) declined with increasing accumulation of As in root as well as leaves in As dose dependent manner. Contrary to this, exogenous application of S, Ca and S + Ca, markedly reduced the negative impact of As on above captioned traits except ProDH activity. On the other hand, ROS and their biomarkers (superoxide radical; OâËË, hydrogen peroxide; H2O2, malondialdehyde; MDA equivalents content and membrane damage; electrolyte leakage), activities of enzymatic (superoxide dismutase; SOD, peroxidase; POD, catalase; CAT and glutathione-S-transferase; GST) and non-enzymatic antioxidant i.e. proline (Pro) content and its enzyme pyrroline-5-carboxylate synthetase; P5CS activity were increased in root and leaves under As stress. While, exogenous application of S, Ca and S + Ca, further enhanced the activities of above mentioned enzymes and Pro content thereby causing considerable reduction in OâËË, H2O2, MDA equivalents content and electrolyte leakage. This study suggests that exogenous application of S and/or Ca efficiently (particularly S + Ca) lowered the negative impact of As on biomass accumulation in Brassica seedlings by improving the uptake of essential mineral nutrients', content of photosynthetic pigments, activities of enzymatic and content of non-enzymatic antioxidants.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecotoxicology and Environmental Safety - Volume 161, 15 October 2018, Pages 318-331
Journal: Ecotoxicology and Environmental Safety - Volume 161, 15 October 2018, Pages 318-331
نویسندگان
Rachana Singh, Parul Parihar, Sheo Mohan Prasad,