Electrical Signals in Long-Distance Communication in Plants

Electric signalling in fruit trees in response to water applications and light–darkness conditions

“…In contrast, avocado and lemon are more sensitive to light fluctuations. In olive, leaf anatomical characteristics are expected to buffer its sensitivity to light (Trebacz et al, 1997(Trebacz et al, , 2006.…”

Evidence for the transmission of information through electric potentials in injured avocado trees

“…Two types of electrical impulses have been reported in plant signaling: action potentials (APs) and variation potentials (VPs). An action potential is an electrical signal that spreads quickly among plant tissues and organs, traveling at a relative high speed and constant amplitude (Davies, 2004;Lautner et al, 2005;Trebacz et al, 2006;Fromm and Lautner, 2007), its duration is of the order of milliseconds and are generated by a stimulus that requires a specific threshold for its initiation (Volkov andRanatunga, 2006, Brenner et al, 2006). An action potential is caused by the movement of ions across the plasma membrane, resulting from a change in its specific permeability to different ions, with transient variations of the cytosol and its external environmental and electrochemical potential (Gelli and Blumwald, 1997;Volkov, 2000;Volkov and Brown, 2006).…”

Analysis of the photosynthetic response induced by variation potential in geranium

“…Ca 2? influx plays significant role in AP (Davies 2006;Trebacz et al 2006;Felle and Zimmermann 2007) and, probably, VP (Julien et al 1991;Zimmermann and Felle 2009) generation; consequently, photosynthesis inactivation induced by electrical signals in higher plants can develop in the same way as in Chara algae. Other possible mechanisms of this photosynthesis inactivation in higher plants are connected with electrical-signal-induced pH changes (Grams et al 2009) and production of abscisic and jasmonic acids (Hlaváčková et al 2006).…”