Ecology

Data on Environmental Science Discussed by Researchers at Technical University

  2012 JUL 6 (VerticalNews) -- By a News Reporter-Staff News Editor at Ecology, Environment & Conservation -- Data detailed on Environmental Science have been presented. According to news reporting out of Freiburg, Germany, by VerticalNews editors, researchers stated "Hyperaccumulators are grown in contaminated soil and water in order that contaminants are taken up and accumulated. Transport of metals from soil to plant is initially dependent on the solubility and mobility of metals in soil solution which is controlled by soil and metal properties and plant physiology."

  Our news journalists obtained a quote from the research by the authors from Technical University, "Complexation with organic and inorganic ligands may increase mobility and availability of metals for plants. In this work the influence of desferrioxamine-B (DFO-B), which naturally is produced in the rhizosphere, and zeolite on Cd accumulation in root and shoot of Thlaspi caerulescens (Cd hyperaccumulator) was investigated. Plants were grown in pots with clean quartz sand, amended with 1% zeolite; treatment solutions included 0, 10, and 100M Cd and 70M DFO-B. Addition of zeolite to the quartz sand significantly reduced Cd concentration in plant tissues and translocation from root to shoot. On contrary, DFO-B considerably enhanced Cd sorption by roots and translocation to aerial part of plants. Treating the plants with zeolite and DFO-B together at 10M Cd resulted in reduction of the bioaccumulation factor but enhancement of Cd translocation from root to shoot at the rate of 13%. In contrast, at 100M Cd in the solution both bioaccumulation and translocation factors decreased. Total metal accumulation as a key factor for evaluating the efficiency of phytoremediation was highly influenced by treatments."

  According to the news editors, the researchers concluded: "Presence of zeolite in pots significantly decreased total Cd accumulation by plants, whereas, DFO-B clearly enhanced it."

  For more information on this research see: Effect of microbial siderophore DFO-B on Cd accumulation by Thlaspi caerulescens hyperaccumulator in the presence of zeolite. Chemosphere, 2012;88(6):683-7. (Elsevier - www.elsevier.com; Chemosphere - www.elsevier.com/wps/product/cws_home/362)

  Our news journalists report that additional information may be obtained by contacting L. Karimzadeh, Dept. of Geosciences, Technical University of Freiberg, Gustave_Zeuner Str 12, 09599 Freiberg, Germany.

  Keywords for this news article include: Europe, Germany, Freiburg, Environmental Science.

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