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Pitt R. E. Parks J. E. Huber S. C. Sangree J. A. 《Plant Cell, Tissue and Organ Culture》1997,50(3):215-219
The permeability of rye leaf protoplasts to glycerol was determined using 1,3-14C glycerol and liquid scintillation spectrometry. Estimates were 1.0×10−8 m s−1 at 0°C and 4.1×10−8 m s−1 at 22 and 31°C. The activation energy for glycerol permeability was 32.8 kJ/mol. The effect of electroporation on glycerol
uptake was also explored. Treatments were performed with a field strength of 100 V/cm and an exponential decay constant of
5.8 ms. At 22 °C, electroporation affected the rate and extent of glycerol permeation, causing an increase in the intercept
of the glycerol uptake curve and a decrease in the slope. Electroporation had no significant effect on glycerol uptake when
performed at 0°C, when the cells were electroporated at 0°C then warmed to 31 °C, or when the cells were electroporated at
22 °C then cooled to 0°C. The results at 22°C were consistent with an influx of glycerol during electroporation.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
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