Effects of La3+ on H+ transmembrane gradient and membrane potential in rice seedling roots
Date
2002Author
Zheng, HL
郑海雷
Zhang, CG
张春光
Zhao, ZQ
赵中秋
Ma, JH
马建华
Li, L
李利
Collections
- 生命科学-已发表论文 [5901]
Abstract
The effects of LaCl3 on membrane potential and transmembrane proton gradient for rice ( Oryza sativa) seedling roots were studied. Highly purified plasma membrane was isolated by aqueous two-phase partitioning method. Both the gradient of transmembrane proton and membrane potential were stimulated by certain low concentration of LaCl3 and depressed by high concentration of LaCl3. The optimal concentration of La3+ is around 40 similar to 60 mumol . L-1 for transmembrane proton gradient and membrane potential. It shows that La3+ can influence the generations and maintenances of membrane potential and transmembrane proton gradient in rice seedling roots.