Variation potential in higher plants: Mechanisms of generation and propagation

Vodeneev, Vladimir; Akinchits, Elena; Sukhov, Vladimir

doi:10.1080/15592324.2015.1057365

Cited by 95 publications

(162 citation statements)

References 83 publications

(217 reference statements)

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“…[1][2][3] VP generation is mainly connected with transitory H C -ATPase inactivation [1][2][3][4] although ion channels also participate in the processes. 3 VP is propagated by the transmission of hydraulic 1,5 or chemical 6,7 signals. VP influences many physiological processes, 2 including gene expression, protein synthesis, phytohormone biosynthesis, respiration, and photosynthesis.…”

Section: Introductionmentioning

confidence: 99%

Variation potential propagation decreases heat-related damage of pea photosystem I by 2 different pathways

Surova

Sherstneva

Vodeneev

et al. 2016

Plant Signaling & Behavior

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Local burning is known to generate and propagate variation potential (VP) in plants. VP affects different physiological processes, including reducing heat-related damage to photosystem I (PSI). We investigated mechanisms of the process. Photosynthesis parameters were measured with Dual-PAM-100 and GFS-3000. VP was induced by burning the first mature leaf and then waiting 5, 10, 15, or 20 min to initiate heating of the second mature leaf. Photosystems activities in the second leaf were investigated at 15 and 135 min after heating. In the absence of VP induction, when incubation in hot water (5 min) was used for heating the intact second leaf, PSI and PSII activities decreased after incubation at both exposure temperatures (45 C and 50 C). When local burning of the first leaf induced VP propagation into the second leaf, reduced photosynthesis (PSI) was observed. Arrival of VP in the second leaf prior to hot water incubation at 50 C decreased heating-induced suppression of PSI activity when measured 15 and 135 min later. Dependence of PSI activity on the time interval (5, 10, 15, or 20 min) between VP induction and heating of the second leaf was dissimilar at 15 and 135 min. Heat-induced suppression of PSII activity in the second leaf was stimulated after VP induction. In contrast, the effect of VP on PSI and PSII damage was weak when leaf 2 was heated at 45 C. VP-induced decrease of PSI activity suppression at 15 min after heating was correlated with stimulation of PSII activity suppression, but increase of PSI activity at 135 min after heating was not related to PSII activity. Thus, our results suggest the possibility of 2 different pathways of VPinduced decrease of heat-related PSI damage.Abbreviations: A CO2 , CO 2 assimilation rate; E, surface potential; PSI, photosystem I; PSII, hotosystem II; VP, variation potential; L PSI , photosystem I effective quantum yield; L PSII , photosystem II effective quantum yield; L PSI 0 , photosystem I quantum yield after 10-s illumination by far-red light; L PSII 0 , photosystem II maximum quantum yield.

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Section: Introductionmentioning

confidence: 99%

Variation potential propagation decreases heat-related damage of pea photosystem I by 2 different pathways

Surova

Sherstneva

Vodeneev

et al. 2016

Plant Signaling & Behavior

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“…VPs do not obey the all-or-nothing law, they are known as slow wave potentials (SWPs) with variable shape, amplitude and time frame. Moreover, the signals are related with the stimulus strength, and last for periods of 10 s up to 30 min 11,12 . System potentials (SPs), in contrast to APs and VPs, reflect a systemic self-propagating hyperpolarization of the plasma membrane or depolarization of the apoplastic voltage.…”

Section: Introductionmentioning

confidence: 99%

“…19, 2016; Despite of different induction mechanisms, the electrical signals are able to inform distant cells about local stimuli, triggering proper physiological responses to a multitude of environmental stimuli 6 . As far as we know, the studies linking electrical signaling with physiological responses to environmental cues are based on the analysis of APs or VPs waves, taking into account only parameters as frequency, amplitude, distance of propagation and time frame 6,8,12,13 . However, quite often mixed electrical potential waves (EPWs) are recorded, for instance, as result of overlapping APs and VPs, which impedes proper signal analysis 14 .…”

Section: Introductionmentioning

confidence: 99%

Beyond APs and VPs: evidences of chaos and self-organized criticality in electrical signals in plants

Gfr

2016

Preprint

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Studies on plant electrophysiology are mostly focused on specific traits of action potentials (APs) and/or variation potentials (VPs), often in single cells. Inspired by the complexity of the signaling network in plants and by analogies with some traits of neurons in human brains, we have sought for evidences of high complexity in the electrical dynamics of plant signaling, beyond APs and VPs responses. Thus, from EEG-like data analyses of soybean plants, we showed consistent evidences of chaotic dynamics in the electrical time series. Furthermore, we have found that the dynamic complexity of electrical signals is affected by the plant physiological conditions, decreasing when plant was stressed. Surprisingly, but not unlikely, we have observed that, after stimuli, electrical spikes arise following a power law distribution, which is indicative of self-organized criticality (SOC). Since, as far as we know, these were the first evidences of chaos and SOC in plant electrophysiology, we have asked follow-up questions and we have proposed new hypotheses, seeking for improving our understanding about these findings.

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“…The fastest propagating signals of plants are ones of a physical nature, such as electrical signals whose speed of propagation can reach more than 10 cm/s, whereas for chemical signals it is less than 0.2 cm/s. Besides the action potential which is universal for all living organisms, the plant-specific variation potential (VP) and system potential [6,8,9] can be distinguished.…”

Section: Introductionmentioning

confidence: 99%

“…VP plays a particular role due to its generation in response to wide range of damaging stimuli, including mechanical wounding, herbivore attack, heating, etc. This type of electrical signal is a wave of membrane depolarization with an amplitude of several tens of mV, characterized by an irregular and prolonged phase of repolarization, and is not subjected to the all-or-nothing rule: the parameters of the VP are dependent on the type and intensity of the stimulus [3,6,8]. For example, the probability of VP occurrence and its amplitude rises with increasing area of the tomato leaf subjected to mechanical damage [10].…”

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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Variation potential in higher plants: Mechanisms of generation and propagation

Cited by 95 publications

References 83 publications

Variation potential propagation decreases heat-related damage of pea photosystem I by 2 different pathways

Variation potential propagation decreases heat-related damage of pea photosystem I by 2 different pathways

Beyond APs and VPs: evidences of chaos and self-organized criticality in electrical signals in plants

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

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