静电场对碗豆幼苗膜透性影响与跨膜电导率

The effect of electrostatic field on pea seedling membrane permeability and transmembrane conductivity

根据静电场作用下碗豆幼苗膜透性的试验结果 ,应用分子力学方法研究了离子跨膜输运能量 .将植物细胞膜内部模拟为两个介电常数不同的空间电荷区 ,建立离子跨膜模型 ,导出了界面势垒的静电荷密度与界面电导率 .并从电子水平研究植物细胞畸变机理 .

School of Physics and Electronic Technology ,Hubei University, Wuhan 430062,China; 2.School of Life Science, Hubei University, Wuhan 430062, China)Abstract:Based on the experiment result in electrostatic field upon membrane permeability at the root tip of garden pea (Pisum satium Linn.), studied ion energy of transmembrane transport by molecule mechanics method. Divided two space-charge regions of different dielectric constant inside plant cell membrane, a model was built for ion transmembrane transport, the charge density and interfacial conductivity was derived from interfacial potential barrier. Distortion mechanism of plant cells was studied at electron level.