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菜豆根生长与电振荡之间的关系

Relationship between Growth and Electric Oscillations in Bean Roots.

作者信息

Souda M, Toko K, Hayashi K, Fujiyoshi T, Ezaki S, Yamafuji K

机构信息

Department of Electronics, Faculty of Engineering, Kyushu University 36, Fukuoka 812, Japan.

出版信息

Plant Physiol. 1990 Jun;93(2):532-6. doi: 10.1104/pp.93.2.532.

Abstract

Extracellular and intracellular electric potentials in bean roots are known to show electric oscillations along the longitudinal axis with a period of several minutes. The relationship between growth and the electric oscillations was studied using roots of adzuki (Phaseolus chrysanthos). We measured surface electric potentials with a multielectrode apparatus while simultaneously measuring elongation using a CCD camera and monitor. Roots having an electric oscillation grew faster than roots with no oscillation. Furthermore, elongation rate was higher in roots with higher oscillation frequency. Oscillation frequency had a strong dependence on temperature; i.e. Q(10) was estimated at 1.7. These results suggest a correlation between electric oscillation and elongation.

摘要

已知菜豆根的细胞外和细胞内电势沿纵轴呈现周期为几分钟的电振荡。利用小豆(Phaseolus chrysanthos)的根研究了生长与电振荡之间的关系。我们使用多电极装置测量表面电势,同时使用电荷耦合器件(CCD)相机和监视器测量伸长情况。有电振荡的根比没有振荡的根生长得更快。此外,振荡频率较高的根的伸长率也较高。振荡频率对温度有很强的依赖性;即,Q(10)估计为1.7。这些结果表明电振荡与伸长之间存在相关性。

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