Department of Chemistry, Oakwood University, Huntsville, AL 35896, USA.
Department of Electrical and Computer Engineering, University of Alabama in Huntsville, Huntsville, AL 35899, USA.
Bioelectrochemistry. 2018 Dec;124:195-205. doi: 10.1016/j.bioelechem.2018.08.001. Epub 2018 Aug 7.
According to literature, electrostimulation of plants can induce plant movement, activation of ion channels, ion transport, gene expression, enzymatic system activation, electrical signaling, plant-cell damage, enhanced wound healing, and can also influence plant growth. Many plants can communicate above ground and underground between adjacent plants. Electrostimulation by square pulses induces passive electrotonic potentials propagating within and between tomato plants. The amplitude and sign of electrotonic potentials, in both the electrostimulated and neighboring tomato plants depends on the amplitude, rise and fall of the applied voltage. Electrostimulation by the pulse train, sinusoidal and triangular saw-shape voltage profile shows the existence of electrical differentiators and refractory periods in cell-to-cell electrical coupling in tomato plants. Electrical networks within one tomato plant can communicate underground with electrical circuits in another tomato plant. Here, we present the mathematical model of electrotonic potentials transmission between tomato plants which is supported by the experimental data. The information gained from this mathematical model and analytical study can be used not only to elucidate the effects of electrostimulation on higher plants, but also to observe and predict the intercellular and intracellular communication in the form of electrical signals within the electrical networks within and between tomato plants.
根据文献，植物电刺激可以诱导植物运动、激活离子通道、离子运输、基因表达、酶系统激活、电信号、植物细胞损伤、促进伤口愈合，还可以影响植物生长。许多植物可以在地上和地下与相邻植物之间进行通讯。方波脉冲的电刺激会在番茄植株内和植株之间产生被动电紧张电位。电紧张电位的幅度和符号，在被电刺激和相邻的番茄植株中，取决于施加电压的幅度、上升和下降。电刺激脉冲串、正弦波和三角锯齿电压分布显示了番茄植株中细胞间电耦合的存在电微分器和不应期。一个番茄植株内的电网络可以与另一个番茄植株的电电路进行地下通讯。在这里，我们提出了番茄植株间电紧张电位传递的数学模型，该模型得到了实验数据的支持。从这个数学模型和分析研究中获得的信息不仅可以用来阐明电刺激对高等植物的影响，还可以观察和预测电网络内和电网络之间以电信号形式的细胞间和细胞内通讯。
