Charophyte electrogenesis as a biomarker for assessing the risk from low-dose ionizing radiation to a single plant cell

Sevriukova, Olga; Kanapeckaite, Auste; Lapeikaite, Indre; Kisnierienë, Vilma; Ladygienė, Rima; Sakalauskas, Vidmantas

doi:10.1016/j.jenvrad.2014.04.016

Cited by 13 publications

(3 citation statements)

References 41 publications

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“…The study of comparatively low specific activity (7,15,30 and 65 kBq/L) of tritium effect on membrane bioelectrical parameters of algae N. obtusa cells shows that 15 kBq/L specific activity concentration increased the specific resistance of N. obtusa cells membrane, reduced current densities of Cl -and Ca 2+ in the depolarization phase of the action potential, and decelerated the recovery of the membrane action potential in the fast repolarization phase [24].…”

Section: Resultsmentioning

confidence: 98%

“…The reference electrode was immersed into the experimental solution near the cell and the microelectrode was inserted into the cell to measure electrical potential differences between outside and inside the intermodal cell. The details of experimental procedures, parameters and specifications of the experimental techniques were thoroughly described in previous studies [13][14][15].…”

Section: Object and Methodsmentioning

confidence: 99%

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THE ACCUMULATION PROCESS of¹³⁷Cs AND⁹⁰Sr IN THE CELL OF NITELLOPSIS OBTUSA ALGAE

Marčiulionienė¹,

Jefanova²,

Sakalauskas³

et al. 2016

RadJ

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Abstract. In the present study, we investigated the accumulation of 137 Cs and 90 Sr in compartments of the Nitellopsis obtusa cells. The effect of Sr 2+ , Cs + and Ca 2+ , K + , which are chemical analogues of 90 Sr and 137 Cs, to the bioelectric parameters of these algae were studied simultaneously. The aim of this work was studying the penetration of 137 Cs and 90 Sr through regulating membrane barriers in the cells of starry stonewort (Nitellopsis obtusa). 137 Cs and 90 Sr are accumulated mainly in the cell membrane (75% to 92%) of these algae. The cell membrane as a cation exchanger regulates ion flow through the first cells diffusion barrier -its thick outer cytomembrane (the complex consisting of the cell wall and plasmalemma). Significantly, smaller amounts of 137 Cs and 90 Sr enter into the cytoplasm than in the cytomembrane, 10-20% and 3-10%, respectively. Analysis of the accumulation levels of 137 Cs and 90 Sr in the compartments of the Nitellopsis obtusa cells show their accumulation in the cell membrane as well as their active transport through outer and inner cytoplasmic membranes. Membrane potentials determined mainly by the gradient of the K + ions are doing an important regulatory function in this process. From the obtained data it results that cells of Nitellopsis obtusa algae can be a convenient radioecological model for the study of the accumulation of radionuclides in plants at the cellular level.

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Section: Resultsmentioning

confidence: 98%

Section: Object and Methodsmentioning

confidence: 99%

THE ACCUMULATION PROCESS of¹³⁷Cs AND⁹⁰Sr IN THE CELL OF NITELLOPSIS OBTUSA ALGAE

Marčiulionienė¹,

Jefanova²,

Sakalauskas³

et al. 2016

RadJ

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show abstract

“…After AP is generated, the cell membrane enters absolute and relatively refractory periods in succession. 20 Action potentials are induced by nonharmful stimuli, e.g., cold, mechanical, and electrical stimuli (Opritov et al, 2002; 52 Krol et al, 2003; 21 , 22 , 53 and are a signaling phenomenon that can transmit information quickly over long distances. APs are based on the activity of voltage channels, with calcium, chlorine, and potassium being the main ions involved in the mechanisms of generation of this signal in plants.…”

Section: Types Of Electrical Signals In Plantsmentioning

confidence: 99%

Electrical signalling and plant response to herbivory: A short review

Pachú,

Macedo,

Malaquias

et al. 2023

Plant Signaling & Behavior

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For a long time, electrical signaling was neglected at the expense of signaling studies in plants being concentrated with chemical and hydraulic signals. Studies conducted in recent years have revealed that plants are capable of emitting, processing, and transmitting bioelectrical signals to regulate a wide variety of physiological functions. Many important biological and physiological phenomena are accompanied by these cellular electrical manifestations, which supports the hypothesis about the importance of bioelectricity as a fundamental ‘model’ for response the stresses environmental and for activities regeneration of these organisms. Electrical signals have also been characterized and discriminated against in genetically modified plants under stress mediated by sucking insects and/or by the application of systemic insecticides. Such results can guide future studies that aim to elucidate the factors involved in the processes of resistance to stress and plant defense, thus aiding in the development of successful strategies in integrated pest management. Therefore, this mini review includes the results of studies aimed at electrical signaling in response to biotic stress. We also demonstrated how the generation and propagation of electrical signals takes place and included a description of how these electrical potentials are measured.

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Radiocesium Phytotoxicity to Single Cell and Higher Plants

Marčiulionienė

Lukšienė

Montvydienė

et al. 2016

Impact of Cesium on Plants and the Environment

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Charophyte electrogenesis as a biomarker for assessing the risk from low-dose ionizing radiation to a single plant cell

Cited by 13 publications

References 41 publications

THE ACCUMULATION PROCESS of¹³⁷Cs AND⁹⁰Sr IN THE CELL OF NITELLOPSIS OBTUSA ALGAE

THE ACCUMULATION PROCESS of¹³⁷Cs AND⁹⁰Sr IN THE CELL OF NITELLOPSIS OBTUSA ALGAE

Electrical signalling and plant response to herbivory: A short review

Radiocesium Phytotoxicity to Single Cell and Higher Plants

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Charophyte electrogenesis as a biomarker for assessing the risk from low-dose ionizing radiation to a single plant cell

Cited by 13 publications

References 41 publications

THE ACCUMULATION PROCESS of137Cs AND90Sr IN THE CELL OF NITELLOPSIS OBTUSA ALGAE

THE ACCUMULATION PROCESS of137Cs AND90Sr IN THE CELL OF NITELLOPSIS OBTUSA ALGAE

Electrical signalling and plant response to herbivory: A short review

Radiocesium Phytotoxicity to Single Cell and Higher Plants

Contact Info

Product

Resources

About

THE ACCUMULATION PROCESS of¹³⁷Cs AND⁹⁰Sr IN THE CELL OF NITELLOPSIS OBTUSA ALGAE

THE ACCUMULATION PROCESS of¹³⁷Cs AND⁹⁰Sr IN THE CELL OF NITELLOPSIS OBTUSA ALGAE