کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
682489 888985 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Prosopis laevigata a potential chromium (VI) and cadmium (II) hyperaccumulator desert plant
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Prosopis laevigata a potential chromium (VI) and cadmium (II) hyperaccumulator desert plant
چکیده انگلیسی

The bioaccumulation of Cr(VI) and Cd(II) in Prosopis laevigata and the effect of these heavy metals on plant growth were assessed. P. laevigata seeds were cultured during 50 days on modified Murashige–Skoog medium supplemented with four different concentrations of Cr(VI) (0–3.4 mM) and Cd(II) (0–2.2 mM), respectively. Heavy metals did not stop germination, but smaller plants with fewer leaves and secondary roots were produced. Seedlings showed an accumulation of 8176 and 21,437 mg Cd kg−1 and of 5461 and 8090 mg Cr kg−1 dry weight, in shoot and root, when cultured with 0.65 mM Cd(II) and 3.4 mM Cr(VI), respectively. These results indicated that significant translocation from the roots unto aerial parts took place. A bioaccumulation factor greater than 100 for Cd and 24 for Cr was exhibited by the seedlings. P. laevigata can be considered as a potential hyperaccumulator of Cd(II) and Cr(VI) species and considered as a promising candidate for phytoremediation purposes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 101, Issue 15, August 2010, Pages 5862–5867
نویسندگان
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