Effects of Lanthanum Chloride on Activity of Redox System in Plasma Membrane of Rice Seedling Roots
来源期刊：JOURNAL OF RARE EARTHS2002年第2期
论文作者：张春光 郑海雷 马建华 赵中秋 黄仙君
Key words：rare earths; rice; redox; iron uptake;
Abstract: The plasma membrane was isolated and purified by using the method of aqueous two-phase partitioning from rice (Oryza sativa) seedling roots. The effect of LaCl3 on the activity of redox system of plasma membrane has been studied. The reduction rate of Fe(CN)3-6 and the oxidation rate of NADH in plasma membrane are stimulated below the concentration of 40 μmolL-1, but depressed in pace with the increasing of LaCl3 over the concentration of 40 μmol*L-1. The possible effect of LaCl3 on the uptake of Fe element by rice seedling was also discussed.
张春光1，郑海雷1，马建华1，赵中秋1，黄仙君1
(1.School of Life Science, Xiamen University, Xiamen 361005, China)
Abstract:The plasma membrane was isolated and purified by using the method of aqueous two-phase partitioning from rice (Oryza sativa) seedling roots. The effect of LaCl3 on the activity of redox system of plasma membrane has been studied. The reduction rate of Fe(CN)3-6 and the oxidation rate of NADH in plasma membrane are stimulated below the concentration of 40 μmolL-1, but depressed in pace with the increasing of LaCl3 over the concentration of 40 μmol*L-1. The possible effect of LaCl3 on the uptake of Fe element by rice seedling was also discussed.
Key words:rare earths; rice; redox; iron uptake;
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