EFFECTS OF ABA ON BIOPHYSICAL CHARACTERS OF MITOCHONDRIA FROM PLANTS
脱落酸对植物线粒体膜生物物理特性的影响

The effed of ABA on membrane micro-viscosity and membrane surface electrostatic potential of mitochondria isolated from etiolated buds of maize buds of maize or from cotyledons of soybean and were investigated by fluoresnce polarhation and neural red method respctively. Results showed that ABA decreased membrane micro-viscosity and increasedmembrane surface electrostatic potential, Which resulted in the increase of O2 uptake of ndtochondria. The effect of ABA on membrane micro-viscosity exhibited saturation Kinetics; and that on surface potential of mitochodria was quite different in various plants, larger in maize than in soybean. Increased A350 of soybean mitochodria means that mitochodrial aggregation could be induced.