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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Spatiotemporal Dynamics Of The Electrical Network Activity In The Root Apex
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Spatiotemporal Dynamics Of The Electrical Network Activity In The Root Apex

机译：根尖中电网活动的时空动力学

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摘要

The study of electrical network systems, integrated with chemical signaling networks, is becoming a common trend in contemporary biology. Classical techniques are limited to the assessment of signals from doublets or triplets of cells at a fixed temporal bin width. At present, full characteristics of the electrical network distribution and dynamics in plant cells and tissues has not been established. Here, a 60-channels multielectrode array (MEA) is applied to study spatiotemporal characteristics of the electrical network activity of the root apex. Both intense spontaneous electrical activities and stimulation-elicited bursts of locally propagating electrical signals have been observed. Propagation of the spikes indicates the existence of excitable traveling waves in plants, similar to those observed in non-nerve electrogenic tissues of animals. Obtained data reveal synchronous electric activities of root cells emerging in a specific root apex region. The dynamic electrochemical activity of root apex ceils is proposed to continuously integrate internal and external signaling for developmental adaptations in a changing environment.
机译：与化学信号网络集成的电子网络系统的研究，已成为当代生物学的普遍趋势。经典技术限于以固定的时间单元宽度评估来自细胞的双峰或三胞胎的信号。目前，尚未建立植物细胞和组织中电网分布和动力学的全部特征。在这里，一个60通道的多电极阵列（MEA）用于研究根尖的网络活动的时空特性。已经观察到强烈的自发电活动和刺激引起的局部传播的电信号的爆发。尖峰的传播表明植物中存在兴奋的行波，类似于在动物的非神经电性组织中观察到的行波。获得的数据揭示了在特定根尖区域出现的根细胞的同步电活动。提出了根尖细胞的动态电化学活性，以不断整合内部和外部信号，以适应不断变化的环境中的发育适应。

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