Coordination and speciation of cadmium in corn seedlings and its effects on macro- and micronutrients uptake

The effect of cadmium (Cd) on both the absorption of important nutrients and the synthesis of low molecular weight thiols (LMWTs) was investigated in corn plants. The inductively coupled plasma-optical emission spectroscopy results demonstrated that the concentration of Cd in tissues (mainly in root...

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Veröffentlicht in:Plant physiology and biochemistry : PPB. - 1991. - 47(2009), 7 vom: 01. Juli, Seite 608-14
1. Verfasser: Castillo-Michel, Hiram A (VerfasserIn)
Weitere Verfasser: Hernandez, Nahum, Martinez-Martinez, Alejandro, Parsons, Jason G, Peralta-Videa, Jose R, Gardea-Torresdey, Jorge L
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2009
Zugriff auf das übergeordnete Werk:Plant physiology and biochemistry : PPB
Schlagworte:Journal Article Research Support, N.I.H., Extramural Research Support, U.S. Gov't, Non-P.H.S. Micronutrients Sulfhydryl Compounds Cadmium 00BH33GNGH Phosphorus 27YLU75U4W Manganese mehr... 42Z2K6ZL8P Sulfur 70FD1KFU70 Molybdenum 81AH48963U Phytochelatins 98726-08-0 Glutathione GAN16C9B8O Cysteine K848JZ4886
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520 |a The effect of cadmium (Cd) on both the absorption of important nutrients and the synthesis of low molecular weight thiols (LMWTs) was investigated in corn plants. The inductively coupled plasma-optical emission spectroscopy results demonstrated that the concentration of Cd in tissues (mainly in roots) increased as the concentration in the medium increased. In addition, the concentration of phosphorus increased in roots of Cd treated plants but remained at normal concentration in shoots. On the other hand, the uptake of sulfur (S) followed a similar trend as the Cd uptake. The concentration of S and the production of LMWT were found to increase significantly upon exposure to Cd. The results of the X-ray absorption spectroscopy analyses indicated that Cd within tissues was bound to S ligands with interatomic distances of 2.51-2.52 A. These results confirm a strong linkage between S uptake and the production of LMWT upon exposure to Cd 
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700 1 |a Hernandez, Nahum  |e verfasserin  |4 aut 
700 1 |a Martinez-Martinez, Alejandro  |e verfasserin  |4 aut 
700 1 |a Parsons, Jason G  |e verfasserin  |4 aut 
700 1 |a Peralta-Videa, Jose R  |e verfasserin  |4 aut 
700 1 |a Gardea-Torresdey, Jorge L  |e verfasserin  |4 aut 
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