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فرآیند و کارکرد گیاهی، جلد ۸، شماره ۳۱، صفحات ۰-۰
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عنوان انگلیسی Lead uptake, bioaccumulation and tolerance in summer savory (Satureja hortensis L.)
چکیده انگلیسی مقاله The objective of this study was to determine the effects of lead (Pb) exposure on bioaccumulation, growth, and tolerance mechanisms in summer savory (Satureja hortensis L.). Plants were subjected to different levels of Pb concentrations including 0 (control), 5, 10, 25, 50 and 100 mg L-1 in growing medium. Pb treatment led to significant increase in root and shoot Pb content. Calculation of BF, TF and TC revealed that Pb preferably accumulated in roots of S. hortensis and root to shoot transport was effectively restricted. Pb toxicity negatively affected plant growth as indicated by significant decrease in plant dry weight as well as roots and shoot length. Pb stress resulted in significant decrease in chlorophyll-a, chlorophyll-b and total chlorophyll content, whereas proline, soluble and reducing carbohydrates and anthocyanin content significantly increased as a result of Pb exposure. Specific activity of antioxidant enzymes including catalase and ascorbate peroxidase continuously increased as concentration of Pb in growing medium elevated. Based on our findings, due to high potential for Pb accumulation in root, S. hortensis may offer a feasible tool for phytostabilization purposes in mildly Pb contaminated soils.  
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نویسندگان مقاله | Ali Akbar Ghotbi-Ravandi
Department of Plant Sciences and Biotechnology. Faculty of life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran


| Seyed Majid Ghaderian
Department of Biology, University of Isfahan, Isfahan


| Zahra Azizollahi
Department of Biology, University of Isfahan, Isfahan
نشانی اینترنتی http://jispp.iut.ac.ir/browse.php?a_code=A-10-975-1&slc_lang=en&sid=1
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/999/article-999-1900185.doc
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده پژوهشی
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