ArticleProceedings of the National Academy of Sciences of the United States of America2006
Osmotic effects on vacuolar ion release in guard cells.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.
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Who cites it
22 citing papers in PubMed, 59 citations in OpenAlex.
- In situ cavitation bubble manometry reveals a lack of light-activated guard cell turgor modulation in bryophytes.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Advances in the Structure, Function, and Regulatory Mechanism of Plant Plasma Membrane Intrinsic Proteins.Genes · 2024Review
- Functional genomic analysis of KFrontiers in plant science · 2022Article
- Green Light Partial Replacement of Red and Blue Light Improved Drought Tolerance by Regulating Water Use Efficiency in Cucumber Seedlings.Frontiers in plant science · 2022Article
- Overexpression of theInternational journal of molecular sciences · 2021Article
- The Alkali Tolerance of Broomcorn Millet (Frontiers in plant science · 2021Article
- Predicting the unexpected in stomatal gas exchange: not just an open-and-shut case.Biochemical Society transactions · 2020Review
- Salt Stress Signals on Demand: Cellular Events in the Right Context.International journal of molecular sciences · 2020Review
- ABA-Induced Stomatal Closure Involves ALMT4, a Phosphorylation-Dependent Vacuolar Anion Channel of Arabidopsis.The Plant cell · 2017Article
- Ion Transport at the Vacuole during Stomatal Movements.Plant physiology · 2017Review
- Role of Aquaporins in a Composite Model of Water Transport in the Leaf.International journal of molecular sciences · 2016Review
- The Water to Solute Permeability Ratio Governs the Osmotic Volume Dynamics in Beetroot Vacuoles.Frontiers in plant science · 2016Article
- An Optimal Frequency in Ca2+ Oscillations for Stomatal Closure Is an Emergent Property of Ion Transport in Guard Cells.Plant physiology · 2016Article
- Exploring emergent properties in cellular homeostasis using OnGuard to model K+ and other ion transport in guard cells.Journal of plant physiology · 2014Review
- Control of vacuolar dynamics and regulation of stomatal aperture by tonoplast potassium uptake.Proceedings of the National Academy of Sciences of the United States of America · 2014Article
- Stomatal size, speed, and responsiveness impact on photosynthesis and water use efficiency.Plant physiology · 2014Review
- Protein phosphorylation in stomatal movement.Plant signaling & behavior · 2014Review
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- Salivary histatin 5 internalization by translocation, but not endocytosis, is required for fungicidal activity in Candida albicans.Molecular microbiology · 2010Article
Corrections and comments
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Authors and funding
1 author at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Tracer flux experiments in isolated guard cells of Commelina communis L. suggest that the vacuolar ion content is regulated and is reset to a reduced fixed point by abscisic acid (ABA) with no significant change in cytoplasmic content. The effects of changes in external osmotic pressure were investigated by adding and removing mannitol from the bathing solution. Two effects were distinguished. In the new steady state of volume and turgor, the vacuolar ion efflux was sensitive to turgor: efflux increased at high turgor and reduced at lower turgor after the addition of mannitol. These changes were inhibited by phenylarsine oxide and are likely to involve the same channel that is involved in the response to ABA. After a hypoosmotic transfer, there was an additional effect: a fast transient stimulation of vacuolar efflux during the period of water flow into the cell; the size of this hypopeak increased with the size of the hypoosmotic shock, with increased water flow. No corresponding transient in reduced vacuolar efflux was observed upon hyperosmotic transfer. The fast hypopeak was not inhibited by phenylarsine oxide and appears to involve a different ion channel from that involved in the resting efflux, the response to ABA, or the turgor sensitivity. Thus, the tonoplast can sense an osmotic gradient and respond to water flow into the vacuole by increased vacuolar ion efflux, thereby minimizing cytoplasmic dilution. An aquaporin is the most likely sensor and may also be involved in the signal transduction chain.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.