ArticlePlant physiology2009
High humidity induces abscisic acid 8'-hydroxylase in stomata and vasculature to regulate local and systemic abscisic acid responses in Arabidopsis.
Article in Plant physiology, 2009. 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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101 citing papers in PubMed, 248 citations in OpenAlex.
- Genome-Wide Identification ofPlants (Basel, Switzerland) · 2026Article
- Genome-wide characterization of cytochrome P450 genes in Solanum tuberosum and StCYP481 role in salt tolerance.BMC plant biology · 2026Article
- Humidity-driven ABA depletion determines plant-pathogen competition for leaf water.Nature communications · 2025Article
- ABA and Ethylene Mediates Tomato Root Development Modulation During Endophytic Fungal Interaction.Journal of fungi (Basel, Switzerland) · 2025Article
- The Identification of Transcriptomic and Phytohormonal Biomarkers for Monitoring Drought and Evaluating the Potential of Acibenzolar-S-Methyl Root Application to Prime Two Apple Rootstock Genotypes for Drought Resistance.International journal of molecular sciences · 2025Article
- Calcium signaling triggers early high humidity responses inProceedings of the National Academy of Sciences of the United States of America · 2024Article
- ContrastedPlant stress (Amsterdam, Netherlands) · 2024Article
- Contrast Relative Humidity Response of Diverse Cowpea (International journal of molecular sciences · 2024Article
- Light- and Relative Humidity-Regulated Hypersensitive Cell Death and Plant Immunity in Chinese Cabbage Leaves by a Non-adapted Bacteria Xanthomonas campestris pv. vesicatoria.The plant pathology journal · 2024Article
- Spider mite herbivory induces an ABA-driven stomatal defense.Plant physiology · 2024Article
- Unveiling the crucial roles of abscisic acid in plant physiology: implications for enhancing stress tolerance and productivity.Frontiers in plant science · 2024Review
- Small holes, big impact: Stomata in plant-pathogen-climate epic trifecta.Molecular plant · 2024Review
- The Effect of Leaf Plasticity on the Isolation of Apoplastic Fluid from Leaves of Tartary Buckwheat Plants GrownPlants (Basel, Switzerland) · 2023Article
- Spatial regulation of plant hormone action.Journal of experimental botany · 2023Review
- Integrated Metabolomic and Transcriptomic Analysis of the Quinoa Seedling Response to High Relative Humidity Stress.Biomolecules · 2023Article
- Next-generation ABACUS biosensors reveal cellular ABA dynamics driving root growth at low aerial humidity.Nature plants · 2023Article
- Transcriptomic Profiling Highlights the ABA Response Role ofInternational journal of molecular sciences · 2023Article
- Natural alleles of the abscisic acid catabolism gene ZmAbh4 modulate water use efficiency and carbon isotope discrimination in maize.The Plant cell · 2022Article
- The maize single-nucleus transcriptome comprehensively describes signaling networks governing movement and development of grass stomata.The Plant cell · 2022Article
- Inter-tissue and inter-organ signaling in drought stress response and phenotyping of drought tolerance.The Plant journal : for cell and molecular biology · 2022Review
41 more citing papers are in PubMed but not listed here.
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Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Levels of endogenous abscisic acid (ABA) are changed dynamically in response to environmental conditions. The ABA 8'-hydroxylase is a key enzyme in ABA catabolism and is encoded by CYP707A genes. In this study, we examined physiological roles of Arabidopsis (Arabidopsis thaliana) CYP707As in the plant's response to changes in humidity. The cyp707a1 and cyp707a3 mutants displayed lower stomatal conductance under turgid conditions (relative humidity 60%) than the wild type. When wild-type plants were transferred to high-humidity conditions (relative humidity 90%), CYP707A1 and CYP707A3 transcript levels increased, followed by the reduction of ABA levels. The cyp707a3 mutant exhibited high ABA levels even after transferring to high-humidity conditions, whereas, under similar conditions, the cyp707a1 mutant exhibited low ABA levels comparable to the wild type. Analysis of spatial expression patterns by using transgenic plants harboring a promoterbeta-glucuronidase gene indicated that high-humidity-induced expression of CYP707A1 and CYP707A3 occurred primarily in guard cells and vascular tissues, respectively. Furthermore, stomatal closure of the cyp707a1 mutant, but not cyp707a3 mutant, was ABA hypersensitive when epidermal peel was treated with exogenous ABA, suggesting that CYP707A1 is essential for ABA catabolism inside the guard cells. These results implicate that CYP707A3 reduces the amount of mobile ABA in vascular tissues in response to high humidity, whereas CYP707A1 inactivates local ABA pools inside the guard cells. Taken together, ABA catabolism in both vascular tissues and guard cells participates in the systemic ABA action that controls stomatal movement in response to high humidity.
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