ArticlePlanta2003
The slow and the quick anion conductance in whole guard cells: their voltage-dependent alternation, and the modulation of their activities by abscisic acid and CO2.
Article in Planta, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.
What it found
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The trial behind it
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Who cites it
27 citing papers in PubMed.
- Guard cell signal transduction mechanisms controlling stomatal movements by light, abscisic acid, CO2, VPD and heat.Plant physiology · 2026Review
- Structural insights into the coordinated regulation of the SLAH family in Arabidopsis thaliana.Nature communications · 2025Article
- Stomatal CO2 sensing in plants: control of gas exchange and interactions with environmental stimuli.Plant & cell physiology · 2025Review
- Burning questions for a warming and changing world: 15 unknowns in plant abiotic stress.The Plant cell · 2023Article
- Raf-like kinases and receptor-like (pseudo)kinase GHR1 are required for stomatal vapor pressure difference response.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
- Water Deficit Modulates the COFrontiers in plant science · 2021Article
- Stomatal Development and Conductance of a Tropical Forage Legume Are Regulated by Elevated [COFrontiers in plant science · 2019Article
- Identification of SLAC1 anion channel residues required for COProceedings of the National Academy of Sciences of the United States of America · 2018Article
- Abscisic acid-independent stomatal COProceedings of the National Academy of Sciences of the United States of America · 2018Article
- An interconnection between tip-focused CaPlant signaling & behavior · 2018Article
- Short-term effect of elevated COEcology and evolution · 2017Article
- The Membrane Transport System of the Guard Cell and Its Integration for Stomatal Dynamics.Plant physiology · 2017Review
- Evolution of the Stomatal Regulation of Plant Water Content.Plant physiology · 2017Review
- Dominant and recessive mutations in the Raf-like kinase HT1 gene completely disrupt stomatal responses to CO2 in Arabidopsis.Journal of experimental botany · 2016Article
- Elevated-CO2 Response of Stomata and Its Dependence on Environmental Factors.Frontiers in plant science · 2016Review
- 2-Hydroxy Acids in Plant Metabolism.The arabidopsis book · 2015Article
- New approaches to the biology of stomatal guard cells.Plant & cell physiology · 2014Review
- Open or close the gate - stomata action under the control of phytohormones in drought stress conditions.Frontiers in plant science · 2013Article
- Mutations in the SLAC1 anion channel slow stomatal opening and severely reduce K+ uptake channel activity via enhanced cytosolic [Ca2+] and increased Ca2+ sensitivity of K+ uptake channels.The New phytologist · 2013Article
- Anion channel sensitivity to cytosolic organic acids implicates a central role for oxaloacetate in integrating ion flux with metabolism in stomatal guard cells.The Biochemical journal · 2011Article
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
We explored the functioning of the slowly activating anion conductance, S-type or SLAC, and of the quickly activating anion conductance, R-type or QUAC, in whole guard cells of Vicia faba L.; details of QUAC activity had not previously been demonstrated in guard cells possessing their walls. The discontinuous single-electrode voltage-clamp method was used to record current responses to voltage pulses and voltage ramps as well as the free-running membrane voltage. At all voltages tested between -200 and 60 mV, SLAC activated with two components, one had a time constant similar to 7 s, the other similar to 40 s. The current-voltage relationship resembled that obtained by patch-clamp experiments. In pulse experiments and 1-s ramps, QUAC activity appeared with half-maximum activation near -50 mV and full activation above -10 mV; it inactivated with a half-time of approximately 10 s. Inactivation of QUAC at -40 mV led to the appearance of SLAC. After deactivation of SLAC at -200 mV, QUAC could be activated again. We concluded that voltage-dependent interchanges between SLAC and QUAC had occurred. Frequently, SLAC and QUAC were active simultaneously in the same cell. Abscisic acid (ABA, 20 microM) activated SLAC as well as QUAC. External Ca2+ was not required, but enhanced the activation of QUAC. Rises in the partial pressure of CO2, in the range between 0 and 700 microbar, caused rapid and reversible increases in the activity of SLAC (and outward currents of K+). QUAC also responded to CO2, however in an unpredictable manner (either by increased or by decreased activity). Oscillations in the free-running membrane voltage arose either spontaneously or after changes in CO2. They were correlated with periodic activations and inactivations of QUAC and required the simultaneous activity of an electrogenic pump.
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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.