US EPA

2067047 

Journal Article 

Effect of aluminium on lipid peroxidation, superoxide dismutase, catalase, and peroxidase activities in root tips of soybean (Glycine max) 

Cakmak, I; Horst, WJ 

1991 

1 

Physiologia Plantarum
ISSN: 0031-9317
EISSN: 1399-3054 

83 

3 

463-468 

English 

WOS:A1991GU62500020 

BIOSIS COPYRIGHT: BIOL ABS. Inhibition of root elongation and modification of membrane properties are sensitive responses of plants to aluminium. The present paper reports on the effect of Al on lipid peroxidation and activities of enzymes related to production of activated oxygen species. Soybean seedlings (Glycine mac L. cv. Sito) were precultured in solution culture for 3-5 days and then treated for 1-72 h with Al (AlCl3) concentrations ranging from 10 to 75 muM at a constant pH of 4.1. In response to Al supply, lipid peroxidation in the root tips (2 cm) was enhanced only after longer durations of treatment. Aluminium-dependent increase in lipid peroxidation was intensified by Fe2+ (FeSO4). A close relationship existed between lipid peroxidation and inhibition of root-elongation rate induced by Al and/or Fe toxicity and/or Ca deficiency. Besides enhancement of lipid peroxidation in the crude extracts of root tips due to Al, the activities of superoxide dismutase (EC 1.15.1.1) and peroxidas 

ALUMINUM TOXICITY; CATALASE; GLYCINE-MAX; LIPID PEROXIDATION; MEMBRANE DAMAGE; PEROXIDASE; ROOT ELONGATION; SOYBEAN; SUPEROXIDE DISMUTASE