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Article
Analysis of Molecular Mechanisms of Chronic Irradiation Effects on Electrical Signals in Wheat Plants
The effect of ionizing radiation (IR) on plants is mainly realized by altering the status of signaling systems and modifying stress signals. Variation potential (VP) is one of the types of electrical signals i...
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Article
Laboratory Simulation of Photosynthesis in a Wide Range of Electromagnetic and Radiation Environment Parameters
The problem of studying the limits of stability and mechanisms of adaptation of living systems to environmental parameters that vary over a wide range is briefly analyzed. The main attention is focused on the ...
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Article
Mathematical Modeling of Photosynthesis and Analysis of Plant Productivity
Photosynthesis is the basis of the plant production process, which makes it extremely relevant to develop methods for evaluating and predicting it under various environmental conditions. The complexity of phot...
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Article
Theoretical Analysis of the Influence of Fluctuations in the Activity of the Plasma Membrane H+-ATPase on Low-Temperature-Induced Electrical Responses in a Plant Cell
Fluctuations in physiological processes are a key property of biosystems; these fluctuations can play both positive and negative roles in living organisms. In particular, fluctuations in the activity of ion ch...
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Article
Analysis of Changes in Photochemical Reflectance Index (PRI) in Relation to the Acidification of the Lumen of the Chloroplasts of Pea and Geranium Leaves under a Short-Term Illumination
Measurement of the photochemical reflectance index (PRI) is a simple and non-invasive method for the evaluation of photosynthetic processes in higher plants. At the same time, the relationship between photosyn...
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Article
Analysis of Correlations between the Indexes of Light-Dependent Reactions of Photosynthesis and the Photochemical Reflectance Index (PRI) in Pea Leaves under Short-Term Illumination
The photochemical reflectance index (PRI) is related to the conversion of violoxanthin into zeaxanthin in the xanthophyll cycle and thereby reflects the activity of electron-transport chain in chloroplasts. Th...
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Article
Impact of Local Damage on Transpiration of Pea Leaves at Various Air Humidity
Local damages induce a wide spectrum of functional responses in intact parts of the plant, including changes in transpiration and CO2 assimilation, which may be associated with propagating variation potential (VP...
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Article
Decrease of mesophyll conductance to CO2 is a possible mechanism of abscisic acid influence on photosynthesis in seedlings of pea and wheat
Treatment of plants by phytohormones is a perspective method of regulation of the plant stress resistance and productivity. However, the mechanisms of phytohormone effects on physiological processes require in...
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Article
Mathematical model of action potential in higher plants with account for the involvement of vacuole in the electrical signal generation
Electrical signals, including action potential (AP), play an important role in plant adaptation to the changing environmental conditions. Experimental and theoretical investigations of the mechanisms of AP gen...
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Article
Age-dependent changes of photosynthetic responses induced by electrical signals in wheat seedlings
Electrical signals in plants, namely, the action potential (AP) and variation potential (VP) alter the activity of many processes, including photosynthesis. The functional responses induced by electrical signa...
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Article
Application of a mathematical model of variation potential for analysis of its influence on photosynthesis in higher plants
Local injuries induce generation of variation potential (VP) in higher plants; VP propagates into intact parts of a plant and induces the photosynthesis inactivation, which is probably connected with a proton ...
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Article
Electrical signals in higher plants: Mechanisms of generation and propagation
Local stimulation induces generation and propagation of electric signals in higher plants. Noninvasive stimulus induces an action potential and damaging influences lead to the variation potential. The mechanis...
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Article
The role of the intra- and extracellular protons in the photosynthetic response induced by the variation potential in pea seedlings
Local burning induces generation and propagation of variation potential (VP) in higher plants. VP induces transient inactivation of photosynthesis, which is possibly connected with proton signal in plant cell....
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Article
Participation of intracellular and extracellular pH changes in photosynthetic response development induced by variation potential in pumpkin seedlings
Electrical signals presented in plants by action potential and by variation potential (VP) can induce a reversible inactivation of photosynthesis. Changes in the intracellular and extracellular pH during VP ge...
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Article
Influence of a variation potential on photosynthesis in pumpkin seedlings (Cucurbita pepo L.)
The influence of a variation potential on photosynthesis in pumpkin seedlings (Cucurbita pepo L.) was investigated in our work. It was shown that the variation potential induced by cotyledon burning propagates in...
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Article
Mathematical simulation of H+-sucrose symporter of plasma membrane in higher plants
H+-sucrose symporter plays an important role in sucrose loading from apoplast to sieve elements, which is one of the initial steps of carbohydrate transport through the plant. Mechanisms of such transport requir....
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Article
The role of Ca2+, H+, and Cl− ions in generation of variation potential in pumpkin plants
The contributions of Ca2+, H+, and Cl− in generation of variation potentials (VP) in 3- to 4-week-old pumpkin (Cucurbita pepo L., cv. Mozoleevskaya) plants were assessed. During VP generation, transient alkaliniz...
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Article
Recording changes in extracellular pH via confocal microscopy during generation of excitation potentials in higher plants
The method of confocal microscopy was applied to pH changes recorded in the apoplast of the stem of a pumpkin seedling during the generation of the action potential and variation potential. To record the chang...
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Article
Signaling role of action potential in higher plants
The signaling role of action potential (AP) in higher plants is considered. The principles underlying realization of this role and the significance of AP-induced short-term effector response are discussed. The...
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Article
Reversible changes of extracellular pH during action potential generation in a higher plant Cucurbita pepo
A pH-sensitive electrode was applied to measure activity of H+ ions in the medium surrounding excitable cells of pumpkin (Cucurbita pepo L.) seedlings during cooling-induced generation of action potential (AP). R...
