ArticleThe Plant cell2004
The ascorbic acid redox state controls guard cell signaling and stomatal movement.
Article in The Plant cell, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 101 papers.
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Who cites it
101 citing papers in PubMed, 403 citations in OpenAlex.
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- Exogenous ascorbic acid enhances drought tolerance in Hypericum perforatum L. by modulating antioxidant defense and osmotic adjustment.Scientific reports · 2026Article
- A CRY1-HY5-MYB signaling cascade fine-tunes guard cell reactive oxygen species levels and triggers stomatal opening.The Plant cell · 2025Article
- Chloroplastic ascorbate modifies plant metabolism and may act as a metabolite signal regardless of oxidative stress.Plant physiology · 2024Article
- The ascorbate-glutathione cycle coming of age.Journal of experimental botany · 2024Review
- OsJAB1 Positively Regulates Ascorbate Biosynthesis and Negatively Regulates Salt Tolerance Due to Inhibiting Early-Stage Salt-Induced ROS Accumulation in Rice.Plants (Basel, Switzerland) · 2023Article
- OsSTS, a Novel Allele of Mitogen-Activated Protein Kinase Kinase 4 (OsMKK4), Controls Grain Size and Salt Tolerance in Rice.Rice (New York, N.Y.) · 2023Article
- Overexpression of the WheatInternational journal of molecular sciences · 2023Article
- Regulation of Reactive Oxygen Species during Salt Stress in Plants and Their Crosstalk with Other Signaling Molecules-Current Perspectives and Future Directions.Plants (Basel, Switzerland) · 2023Review
- The Functions of Chloroplastic Ascorbate in Vascular Plants and Algae.International journal of molecular sciences · 2023Review
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- Evaluation of the Anti-Cancer Potential ofMolecules (Basel, Switzerland) · 2022Article
- Impact of Biochar Application at Water Shortage on Biochemical and Physiological Processes inPlants (Basel, Switzerland) · 2022Article
- Co-evolved plant and blast fungus ascorbate oxidases orchestrate the redox state of host apoplast to modulate rice immunity.Molecular plant · 2022Article
- Over-Expression of Dehydroascorbate Reductase Improves Salt Tolerance, Environmental Adaptability and Productivity inAntioxidants (Basel, Switzerland) · 2022Article
- Impact of Exogenously Sprayed Antioxidants on Physio-Biochemical, Agronomic, and Quality Parameters of Potato in Salt-Affected Soil.Plants (Basel, Switzerland) · 2022Article
- Sandbur Drought Tolerance Reflects Phenotypic Plasticity Based on the Accumulation of Sugars, Lipids, and Flavonoid Intermediates and the Scavenging of Reactive Oxygen Species in the Root.International journal of molecular sciences · 2021Article
- Distribution and Functions of Monodehydroascorbate Reductases in Plants: Comprehensive Reverse Genetic Analysis ofAntioxidants (Basel, Switzerland) · 2021Article
- Responses ofInternational journal of molecular sciences · 2021Article
41 more citing papers are in PubMed but not listed here.
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
H(2)O(2) serves an important stress signaling function and promotes stomatal closure, whereas ascorbic acid (Asc) is the major antioxidant that scavenges H(2)O(2). Dehydroascorbate reductase (DHAR) catalyzes the reduction of dehydroascorbate (oxidized ascorbate) to Asc and thus contributes to the regulation of the Asc redox state. In this study, we observed that the level of H(2)O(2) and the Asc redox state in guard cells and whole leaves are diurnally regulated such that the former increases during the afternoon, whereas the latter decreases. Plants with an increased guard cell Asc redox state were generated by increasing DHAR expression, and these exhibited a reduction in the level of guard cell H(2)O(2). In addition, a higher percentage of open stomata, an increase in total open stomatal area, increased stomatal conductance, and increased transpiration were observed. Guard cells with an increase in Asc redox state were less responsive to H(2)O(2) or abscisic acid signaling, and the plants exhibited greater water loss under drought conditions, whereas suppressing DHAR expression conferred increased drought tolerance. Our analyses suggest that DHAR serves to maintain a basal level of Asc recycling in guard cells that is insufficient to scavenge the high rate of H(2)O(2) produced in the afternoon, thus resulting in stomatal closure.
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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.