کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9451388 1307814 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhancement of lead uptake by alfalfa (Medicago sativa) using EDTA and a plant growth promoter
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Enhancement of lead uptake by alfalfa (Medicago sativa) using EDTA and a plant growth promoter
چکیده انگلیسی
Phytoremediation is a novel cleanup technology for the removal of contaminants from polluted waters and soils. In phytoremediation, the plant uptake capability and the availability of the pollutant in the media are important. Here we show the results of a study on the combined effects of ethylenediaminetetraacetic acid (EDTA) and the phytohormone indole-3-acetic acid (IAA) on Pb uptake by Medicago sativa (alfalfa). Plants were grown in hydroponics media containing a nutrient solution amended with Pb at 0.2 mM and different combinations of EDTA, and IAA. After 10 d of treatment, the Pb content in plant tissues was quantified using an Inductively Coupled Plasma Optical Emission Spectrometer (ICP/OES). The results showed that the combination of 100 μM IAA/0.2 mM EDTA increased the Pb accumulation in leaves by about 2800% and by about 600%, as compared to Pb content in leaves of plants exposed to Pb alone and those cultivated with Pb/EDTA, respectively. These results indicate that non-metal hyperaccumulator plants could increase their hyperaccumulating potential without genetic manipulation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 61, Issue 4, October 2005, Pages 595-598
نویسندگان
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