ArticlePlant physiology2000
Inward potassium channel in guard cells as a target for polyamine regulation of stomatal movements.
Article in Plant physiology, 2000. 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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Who cites it
77 citing papers in PubMed, 311 citations in OpenAlex.
- Multi-omics insights into salinity tolerance in African bermudagrass.The plant genome · 2026Article
- Dual functions of thermospermine in plant growth and stress responses.Amino acids · 2026Review
- Root pH variation of herbaceous plants among plant functional groups in response to climate and soil gradients on the Tibetan alpine grasslands.Ecology and evolution · 2024Article
- Transcriptomic and metabolomic profiling reveals the drought tolerance mechanism ofFrontiers in plant science · 2023Article
- Effect of foliar application of amino acid, humic acid and fulvic acid on the oil content and quality of olive.Saudi journal of biological sciences · 2022Article
- Exogenous Putrescine Increases Heat Tolerance in Tomato Seedlings by Regulating Chlorophyll Metabolism and Enhancing Antioxidant Defense Efficiency.Plants (Basel, Switzerland) · 2022Article
- Male Fertility under Environmental Stress: Do Polyamines Act as Pollen Tube Growth Protectants?International journal of molecular sciences · 2022Review
- Unravelling the multi-faceted regulatory role of polyamines in plant biotechnology, transgenics and secondary metabolomics.Applied microbiology and biotechnology · 2022Review
- Article
- Versatile roles of polyamines in improving abiotic stress tolerance of plants.Frontiers in plant science · 2022Review
- Spermidine exogenous application mollifies reproductive stage heat stress ramifications in rice.Frontiers in plant science · 2022Article
- Cadaverine regulates biotin synthesis to modulate primary root growth in Arabidopsis.The Plant journal : for cell and molecular biology · 2021Article
- Spermine mediated improvements on stomatal features, growth, grain filling and yield of rice under differing water availability.Scientific reports · 2021Article
- Article
- Potassium Control of Plant Functions: Ecological and Agricultural Implications.Plants (Basel, Switzerland) · 2021Article
- Conjugated Polyamines in Root Plasma Membrane Enhanced the Tolerance of Plum Seedling to Osmotic Stress by Stabilizing Membrane Structure and Therefore Elevating HFrontiers in plant science · 2021Article
- Differential Association of Free, Conjugated, and Bound Forms of Polyamines and Transcript Abundance of Their Biosynthetic and Catabolic Genes During Drought/Salinity Stress in Tomato (Frontiers in plant science · 2021Article
- Relationship between polyamines conjugated to mitochondrion membrane and mitochondrion conformation from developing wheat embryos under drought stress.Journal of biosciences · 2021Article
- Arbuscular Mycorrhiza-Mediated Regulation of Polyamines and Aquaporins During Abiotic Stress: Deep Insights on the Recondite Players.Frontiers in plant science · 2021Review
- Synergistic Effect ofPlants (Basel, Switzerland) · 2020Article
17 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A number of studies show that environmental stress conditions such as drought, high salt, and air pollutants increase polyamine levels in plant cells. However, little is understood about the physiological function of elevated polyamine levels. We report here that polyamines regulate the voltage-dependent inward K(+) channel in the plasma membrane of guard cells and modulate stomatal aperture, a plant "sensor" to environmental changes. All natural polyamines, including spermidine, spermine, cadaverine, and putrescine, strongly inhibited opening and induced closure of stomata. Whole-cell patch-clamp analysis showed that intracellular application of polyamines inhibited the inward K(+) current across the plasma membrane of guard cells. Single-channel recording analysis indicated that polyamine regulation of the K(+) channel requires unknown cytoplasmic factors. In an effort to identify the target channel at the molecular level, we found that spermidine inhibited the inward K(+) current carried by KAT1 channel that was functionally expressed in a plant cell model. These findings suggest that polyamines target KAT1-like inward K(+) channels in guard cells and modulate stomatal movements, providing a link between stress conditions, polyamine levels, and stomatal regulation.
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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.