Autor: Christopher D. Gussman, Armona L. Epstein, Jianwei W. Huang, Uri Yermiyahu, Michael J. Blaylock, Yoram Kapulnik, Cindy S. Orser
Rok vydání: 1999
Předmět:
Zdroj: Plant and Soil. 208:87-94
ISSN: 0032-079X
Popis: Previous studies have shown that EDTA is necessary to solubilize soil Pb and facilitate its transport from the soil to the above ground plant tissues. These studies have also suggested that Pb is accumulated in the plant tissue with transpiration as the driving force. We conducted further studies to evaluate the relationship between EDTA soil treatment, plant transpiration, and plant accumulation of Pb and EDTA. Indian mustard (Brassica juncea) plants were grown in soils containing Pb at three different concentrations (1.5, 3.0 and 4.8 mmol/kg) for 5 weeks before being treated with EDTA concentrations ranging from 0 to 10 mmol/kg. Plant shoots and xylem sap were collected and analyzed for Pb and EDTA content using ICP and HPLC, respectively. Water loss was measured for 7 days following EDTA application. Transpiration was not affected at
Databáze: OpenAIRE
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