Biologia plantarum 49:617-619, 2005 | DOI: 10.1007/s10535-005-0059-9
Influence of lead on membrane permeability and lipoxygenase activity in lupine roots
- 1 Laboratory of Plant Ecophysiology, Faculty of Biology, Adam Mickiewicz University, Poznan, Poland
Lead nitrate at concentration of 150 mg dm-3 inhibits root growth of Lupinus luteus seedlings by bout 20 %, which is accompanied by an increase of K+ leakage from the root cells. Non-denaturing isoelectric focusing in polyacrylamide slab gel has shown that lead stimulates the activity of most lipoxygenase isoenzymes and induces one additional isoenzyme with pI 6.9.
Keywords: K+ leakage; lipid peroxidation; Lupinus luteus
Subjects: lead, membrane permeability; lipid peroxidation; lipoxygenase; lupine, roots; Lupinus luteus; malondialdehyde; membrane permeability, lead; potassium, K+ leakage; root, membrane permeability
Received: November 10, 2003; Accepted: April 15, 2005; Published: December 1, 2005 Show citation
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