Electrophysiology of pumpkin seeds: Memristors in vivo.
Electrophysiology of pumpkin seeds: Memristors in vivo.
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南瓜籽的电生理学：体内忆阻器。
DOI：
10.1080/15592324.2016.1151600
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发表时间：
2016
影响因子：
2.9
通讯作者：
Markin,VladislavS
中科院分区：
文献类型：
--
作者：
Volkov,AlexanderG;Nyasani,EuniceK;Tuckett,Clayton;Greeman,EstherA;Markin,VladislavS
忆阻器的发现者Leon Chua从理论上预测，电压门控离子通道可以成为忆阻器。我们最近在不同的植物中发现了忆阻器，如捕蝇草、含羞草、芦荟、苹果果和土豆块茎。在文献中还没有关于种子中是否存在忆阻器的文献。这项工作的目标是发现南瓜种子是否可能有忆阻器。我们选择了西葫芦Cucurbita Pepo L.Cinderella，Cucurbita Maxima L.cv Warty Goblin，和Cucurbita max，cv.贾拉代尔为这一分析提供了种子。在这些种子中，我们发现了具有记忆功能的电阻器。这种分析是基于循环伏安法的，即忆阻器应该表现为一个非线性的两端电子元件，对于任何双极循环电压输入信号，它在电流-电压平面上都表现出一个夹持的磁滞回线。干燥休眠的南瓜种子具有很高的电阻，没有记忆特性。双极正弦或三角周期波电刺激南瓜种子，在吸胀的南瓜种子中产生记忆电阻指纹的电响应。四乙基氯化铵是一种电压门控钾离子通道的抑制剂，它在南瓜种子中将忆阻器转换为电阻。NPPB(5-硝基-2-(3-苯丙氨基)苯甲酸)抑制吸胀南瓜种子的记忆特性。南瓜种子中忆阻器的发现为理解种子中的电生理现象开辟了新的方向。
Leon Chua, the discoverer of a memristor, theoretically predicted that voltage gated ion channels can be memristors. We recently found memristors in different plants such as the Venus flytrap,Mimosa pudica, Aloe vera, apple fruits, and in potato tubers. There are no publications in literature about the existence of memristors in seeds. The goal of this work was to discover if pumpkin seeds might have memristors. We selected Cucurbita pepo L., cv. Cinderella, Cucurbita maxima L. cv Warty Goblin, andCucurbita maximaL., cv. Jarrahdale seeds for this analysis. In these seeds, we found the presence of resistors with memory. The analysis was based on cyclic voltammetry where a memristor should manifest itself as a nonlinear two-terminal electrical element, which exhibits a pinched hysteresis loop on a current-voltage plane for any bipolar cyclic voltage input signal. Dry dormant pumpkin seeds have very high electrical resistance without memristive properties. The electrostimulation by bipolar sinusoidal or triangular periodic waves induces electrical responses in imbibed pumpkin seeds with fingerprints of memristors. Tetraethylammonium chloride, an inhibitor of voltage gated K+channels, transforms a memristor to a resistor in pumpkin seeds. NPPB (5-Nitro-2-(3-phenylpropylamino)benzoic acid) inhibits the memristive properties of imbibed pumpkin seeds. The discovery of memristors in pumpkin seeds creates a new direction in the understanding of electrophysiological phenomena in seeds.