ArticlePlant physiology2011
Plasma membrane surface potential: dual effects upon ion uptake and toxicity.
Article in Plant physiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed.
- Mechanistic Insights into the Differential Toxicity and Antagonistic Interactions of the Rare Earth Elements Cerium and Yttrium Toward Rice Roots.Biological trace element research · 2026Article
- Electrical properties of plant root cell plasma membrane influence the alleviation of Al and Cu phytotoxicity by Ca and Mg cations.Environmental science and pollution research international · 2021Article
- Sodium chloride decreases cadmium accumulation and changes the response of metabolites to cadmium stress in the halophyte Carpobrotus rossii.Annals of botany · 2018Article
- Effect of different nitrogen forms on the toxicity of Zn in wheat seedling root: a modeling analysis.Environmental science and pollution research international · 2017Article
- A novel method for assessment of local pH in periplasmic space and of cell surface potential in yeast.Journal of bioenergetics and biomembranes · 2017Article
- Does a voltage-sensitive outer envelope transport mechanism contributes to the chloroplast iron uptake?Planta · 2016Article
- Cadmium accumulation is enhanced by ammonium compared to nitrate in two hyperaccumulators, without affecting speciation.Journal of experimental botany · 2016Article
- Aluminium alleviates manganese toxicity to rice by decreasing root symplastic Mn uptake and reducing availability to shoots of Mn stored in roots.Annals of botany · 2015Article
- Consideration of the bioavailability of metal/metalloid species in freshwaters: experiences regarding the implementation of biotic ligand model-based approaches in risk assessment frameworks.Environmental science and pollution research international · 2015Review
- Higher sterol content regulated by CYP51 with concomitant lower phospholipid content in membranes is a common strategy for aluminium tolerance in several plant species.Journal of experimental botany · 2015Article
- Surface Electrical Potentials of Root Cell Plasma Membranes: Implications for Ion Interactions, Rhizotoxicity, and Uptake.International journal of molecular sciences · 2014Review
- Surface potential measurement of bacteria using Kelvin probe force microscopy.Journal of visualized experiments : JoVE · 2014Article
- Alleviation effects of magnesium on copper toxicity and accumulation in grapevine roots evaluated with biotic ligand models.Ecotoxicology (London, England) · 2013Article
- Calculated activity of Mn2+ at the outer surface of the root cell plasma membrane governs Mn nutrition of cowpea seedlings.Journal of experimental botany · 2011Article
- A novel approach for predicting the uptake and toxicity of metallic and metalloid ions.Plant signaling & behavior · 2011Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Electrical properties of plasma membranes (PMs), partially controlled by the ionic composition of the exposure medium, play significant roles in the distribution of ions at the exterior surface of PMs and in the transport of ions across PMs. The effects of coexisting cations (commonly Al(3+), Ca(2+), Mg(2+), H(+), and Na(+)) on the uptake and toxicity of these and other ions (such as Cu(2+), Zn(2+), Ni(2+), Cd(2+), and H(2)AsO(4)(-)) to plants were studied in terms of the electrical properties of PMs. Increased concentrations of cations or decreased pH in rooting media, whether in solution culture or in soils, reduced the negativity of the electrical potential at the PM exterior surface (ψ(0)(o)). This reduction decreased the activities of metal cations at the PM surface and increased the activities of anions such as H(2)AsO(4)(-). Furthermore, the reduced ψ(0)(o) negativity increased the surface-to-surface transmembrane potential difference, thus increasing the electrical driving force for cation uptake and decreasing the driving force for anion uptake across PMs. Analysis of measured uptake and toxicity of ions using electrostatic models provides evidence that uptake and toxicity are functions of the dual effects of ψ(0)(o) (i.e. altered PM surface ion activity and surface-to-surface transmembrane potential difference gradient). This study provides novel insights into the mechanisms of plant-ion interactions and extends current theory to evaluate ion bioavailability and toxicity, indicating its potential utility in risk assessment of metal(loid)s in natural waters and soils.
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