Volkov Alexander G, Reedus Jada, Mitchell Colee M, Tucket Clayton, Forde-Tuckett Victoria, Volkova Maya I, Markin Vladislav S, Chua Leon
a Department of Chemistry and Biochemistry; Oakwood University; Huntsville, AL USA.
Plant Signal Behav. 2014;9(7):e29056. doi: 10.4161/psb.29056.
A memristor is a resistor with memory, which is a non-linear passive two-terminal electrical element relating magnetic flux linkage and electrical charge. Here we found that memristors exist in vivo. The electrostimulation of the Aloe vera by bipolar sinusoidal or triangle periodic waves induce electrical responses with fingerprints of memristors. Uncouplers carbonylcyanide-3-chlorophenylhydrazone and carbonylcyanide-4-trifluoromethoxy-phenyl hydrazone decrease the amplitude of electrical responses at low and high frequencies of bipolar periodic sinusoidal or triangle electrostimulating waves. Memristive behavior of an electrical network in the Aloe vera is linked to the properties of voltage gated ion channels: the K(+) channel blocker TEACl reduces the electric response to a conventional resistor. Our results demonstrate that a voltage gated K(+) channel in the excitable tissue of plants has properties of a memristor. The discovery of memristors in plants creates a new direction in the modeling and understanding of electrical phenomena in plants.
忆阻器是一种具有记忆功能的电阻器,它是一种将磁通量与电荷联系起来的非线性无源二端电气元件。在此我们发现忆阻器存在于生物体内。用双极正弦波或三角周期波对芦荟进行电刺激会诱发具有忆阻器特征的电响应。解偶联剂羰基氰化物-3-氯苯腙和羰基氰化物-4-三氟甲氧基苯腙会降低双极周期正弦波或三角电刺激波在低频和高频时电响应的幅度。芦荟中电网络的忆阻行为与电压门控离子通道的特性相关:钾离子通道阻滞剂四乙铵氯降低了对传统电阻器的电响应。我们的结果表明,植物可兴奋组织中的电压门控钾离子通道具有忆阻器的特性。植物中忆阻器的发现为植物电现象的建模和理解开创了一个新方向。