Slow Wave Potentials — a Propagating Electrical Signal Unique to Higher Plants

Stahlberg, Rainer; Cleland, Robert E.; Volkenburgh, Elizabeth Van

doi:10.1007/978-3-540-28516-8_20

Cited by 91 publications

(103 citation statements)

References 52 publications

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“…At saturating humidity, when xylem tension becomes negligible, VPs will not be generated. VPs are also called slow wave potentials by some authors (Stahlberg, Cleland & Van Volkenburgh 2006) because of their slow repolarization phase.Their ionic mechanism differs from that underlying APs; it is thought to involve a transient shutdown of a P-type H + ATPase in the plasma membrane (Stahlberg et al 2006). In M. pudica, cutting the tip of a leaf pinna generated a VP in the rhachis, which was of irregular form and longer duration than an AP (Fig.…”

Section: Vpmentioning

confidence: 99%

Electrical signals and their physiological significance in plants

Fromm¹,

Lautner²

2006

Plant Cell & Environment

557

470

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Electrical excitability and signalling, frequently associated with rapid responses to environmental stimuli, are well known in some algae and higher plants. The presence of electrical signals, such as action potentials (AP), in both animal and plant cells suggested that plant cells, too, make use of ion channels to transmit information over long distances. In the light of rapid progress in plant biology during the past decade, the assumption that electrical signals do not only trigger rapid leaf movements in 'sensitive' plants such as Mimosa pudica or Dionaea muscipula, but also physiological processes in ordinary plants proved to be correct. Summarizing recent progress in the field of electrical signalling in plants, the present review will focus on the generation and propagation of various electrical signals, their ways of transmission within the plant body and various physiological effects.

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Section: Vpmentioning

confidence: 99%

Electrical signals and their physiological significance in plants

Fromm¹,

Lautner²

2006

Plant Cell & Environment

557

470

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 97%

“…Variation potentials (VPs), also known as slow wave potentials (SWP), in contrast to APs, have the capacity to traverse regions of dead or poisoned tissue (Stahlberg et al ., ). VPs are unique to plants and occur in response to wounding or flaming (Stahlberg et al ., ). The initiation of VPs requires ionic fluxes (Vodeneev et al ., ; Katicheva et al ., ) and a decrease in H + ATPase activity (Julien and Frachisse, ), but how they propagate is not understood.…”

Section: Introductionmentioning

confidence: 97%

“…The propagation mechanism underlying VPs must be capable of passively passing through regions of dead tissue (Stahlberg et al ., ), thus excluding self‐propagating ionic species that form APs, ROS or calcium waves (Miller et al ., ; van Bel et al ., ; Choi et al ., ; Evans et al ., ) as the underlying mechanism. Preventing generation of the electrical signal in one cell does not prevent generation of the electrical signal in later cells.…”

Section: Introductionmentioning

confidence: 99%

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Chemical agents transported by xylem mass flow propagate variation potentials

Evans

Morris

2017

The Plant Journal

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SummaryLong‐distance signalling is important for coordinating plant responses to the environment. Variation potentials (VPs) are a type of long‐distance electrical signal that are generated in plants in response to wounding or flaming. Unlike self‐propagating action potentials, VPs can be measured beyond regions of dead or chemically treated tissue that block signal generation, suggesting a different mode of propagation. Two alternative propagation mechanisms have been proposed: movement of a chemical agent and a pressure wave through the vasculature. Variants of these two signalling mechanisms have been suggested. Here, we use simple models of the underlying physical processes to evaluate and compare these predictions against independent data. Our models suggest that chemical diffusion and pressure waves are unlikely to capture existing data with parameters that are known from other sources. The previously discarded hypothesis of mass flow in the xylem transporting a chemical agent, however, is able to reproduce experimental propagation speeds for VPs. We therefore suggest that chemical agents transported by mass flow within the xylem are more likely than a pressure wave or chemical diffusion as a VP propagation mechanism. Understanding this mode of long‐distance signalling within plants is important for unravelling how plants coordinate physiological responses via cell‐to‐cell communication.

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“…A more physiological stimulus, namely, gradual local heating, also induces VP, which propagates over a long distance with greater amplitude compared to mechanical damage [11]. During VP propagation, a signal decrement is observed-the amplitude and VP propagation velocity decrease with increasing distance from the wounding area [3,6,8,12,13].…”

Section: Introductionmentioning

confidence: 99%

Automatic Determination of the Parameters of Electrical Signals and Functional Responses of Plants Using the Wavelet Transformation Method

et al. 2019

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Smart agriculture management systems with real-time control of plant health and vegetation are recognized as one of the crucial technologies determining agriculture development, playing a fundamental role in reducing yield losses and improving product quality. The earliest plant responses to various adverse factors are propagating stress signals, including electrical ones, and the changes in physiological processes induced by them. Among the latter, photosynthesis is of particular interest due to its key role in the production process. Of practical importance, photosynthesis activity can be registered not only in contact mode but by remote sensing using optical methods. The aim of the present work was to develop the approach to automatic determination of the main parameters of electrical signals and changes in photosynthesis activity and transpiration using continuous wavelet transform (CWT). Applying CWT based on derivatives of the Gaussian function allows accurate determination of the parameters of electrical signals as well as induced physiological responses. Moreover, CWT was applied for spatio-temporal mapping of the photosynthesis response to stress factors in pea leaf. The offered approach allowed automatic identification of the response start time in every pixel and visualization of the change propagation front. The results indicate high potential of CWT for automatic assessment of plants stress, including monitoring of plant health in large-scale agricultural lands and automated fields.

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Slow Wave Potentials — a Propagating Electrical Signal Unique to Higher Plants

Cited by 91 publications

References 52 publications

Electrical signals and their physiological significance in plants

Electrical signals and their physiological significance in plants

Chemical agents transported by xylem mass flow propagate variation potentials

Automatic Determination of the Parameters of Electrical Signals and Functional Responses of Plants Using the Wavelet Transformation Method

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