ArticlePlant physiology2002
Turgor regulation in osmotically stressed Arabidopsis epidermal root cells. Direct support for the role of inorganic ion uptake as revealed by concurrent flux and cell turgor measurements.
Article in Plant physiology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 77 papers.
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77 citing papers in PubMed, 241 citations in OpenAlex.
- Quantifying Root Turgor Using Dew Point Hygrometry.Methods in molecular biology (Clifton, N.J.) · 2027Article
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- Multi-omics analysis reveals key regulatory defense pathways in Ruppia sinensis in response to water salinity fluctuations.BMC plant biology · 2025Article
- 1',4'-trans-diol-ABA enhances the growth and physiological characteristics of rice (Oryza sativa L.) seedlings under salt stress.PloS one · 2025Article
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- Accession-specific parent-of-origin dependent and independent genome dosage effects on salt tolerance inRoyal Society open science · 2024Article
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- Evidence that endosperm turgor pressure both promotes and restricts seed growth and size.Nature communications · 2023Article
- An overview of salinity stress, mechanism of salinity tolerance and strategies for its management in cotton.Frontiers in plant science · 2022Review
- Strategies of tree species to adapt to drought from leaf stomatal regulation and stem embolism resistance to root properties.Frontiers in plant science · 2022Review
- MCAs in Arabidopsis are CaNature communications · 2021Article
- AFB1 controls rapid auxin signalling through membrane depolarization in Arabidopsis thaliana root.Nature plants · 2021Article
- Chloride nutrition improves drought resistance by enhancing water deficit avoidance and tolerance mechanisms.Journal of experimental botany · 2021Article
- Antioxidant Enzymatic Activity and Osmotic Adjustment as Components of the Drought Tolerance Mechanism inPlants (Basel, Switzerland) · 2021Article
- Shaping the Organ: A Biologist Guide to Quantitative Models of Plant Morphogenesis.Frontiers in plant science · 2021Review
- The LRXs-RALFs-FER module controls plant growth and salt stress responses by modulating multiple plant hormones.National science review · 2021Article
- Partial Substitution of K by Na Alleviates Drought Stress and Increases Water Use Efficiency inFrontiers in plant science · 2021Article
- HvAKT2 and HvHAK1 confer drought tolerance in barley through enhanced leaf mesophyll HPlant biotechnology journal · 2020Article
17 more citing papers are in PubMed but not listed here.
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Authors and funding
2 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Hyperosmotic stress is known to significantly enhance net uptake of inorganic ions into plant cells. Direct evidence for cell turgor recovery via such a mechanism, however, is still lacking. In the present study, we performed concurrent measurements of net ion fluxes (with the noninvasive microelectrode ion flux estimation technique) and cell turgor changes (with the pressure-probe technique) to provide direct evidence that inorganic ion uptake regulates turgor in osmotically stressed Arabidopsis epidermal root cells. Immediately after onset of hyperosmotic stress (100/100 mM mannitol/sorbitol treatment), the cell turgor dropped from 0.65 to about 0.25 MPa. Turgor recovery started within 2 to 10 min after the treatment and was accompanied by a significant (30-80 nmol m-2 s-1) increase in uptake of K+, Cl-, and Na+ by root cells. In most cells, almost complete (>90% of initial values) recovery of the cell turgor was observed within 40 to 50 min after stress onset. In another set of experiments, we combined the voltage-clamp and the microelectrode ion flux estimation techniques to show that this process is, in part, mediated by voltage-gated K+ transporters at the cell plasma membrane. The possible physiological significance of these findings is discussed.
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