Electrical signaling in Aloe vera induced by localized thermal stress

The Changes of Power Spectrum of Electrical Signal in Aloe under Several Damage Conditions

“…To the generation of electrical signals on the plant, transmission, reception and transformation mechanism, many researchers agree with the idea that a certain stimuli receptor must be present at the cell membrane, and that a transient polarization, induced by specific ion fluxes through this membrane, is the ultimate agent of the electrical potential signal generation [1,2,13,24]. An action potential is an electrical signal that spreads quickly among plant tissues and organs, traveling at a relative high speed and constant amplitude [4,9,14,18,20], its duration is of the order of milliseconds and are generated by a stimulus that requires a specific threshold for its initiation [7,25]. In this paper, when the smoking, there is little change of the signal amplitude and the distribution of power spectrum compared with control, indicates that the signal is mainly LP.…”

Sunflower exposed to high-intensity microwave-frequency electromagnetic field: electrophysiological response requires a mechanical injury to initiate

“…12,15 Two other kinds of electrical signals have been recently suggested such as the "system potential" 16 that differs from AP and SWP by its electrical characteristics and "solitary waves" that are APs as fast as the mammalian potentials: the plasma membrane continuity of the phloem sieve tube would be the support of these up to 105 m/s propagating APs. 9,17 A link has also been demonstrated between a given stimulus (shading, flaming. .…”

Electrophysiology of Woody Plants

“…However, in contrast to APs, their amplitude will be reduced with increasing distance from the site of generation. Volkov et al, 2007).…”