ArticleProceedings of the National Academy of Sciences of the United States of America1992
Gibberellic acid and abscisic acid coordinately regulate cytoplasmic calcium and secretory activity in barley aleurone protoplasts.
Article in Proceedings of the National Academy of Sciences of the United States of America, 1992. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.
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46 citing papers in PubMed, 198 citations in OpenAlex.
- Calcium imaging: a technique to monitor calcium dynamics in biological systems.Physiology and molecular biology of plants : an international journal of functional plant biology · 2023Review
- Effect of gibberellic acid on photosynthesis and oxidative stress response in maize under weak light conditions.Frontiers in plant science · 2023Article
- Roles of Abscisic Acid and Gibberellins in Stem/Root Tuber Development.International journal of molecular sciences · 2022Review
- Programmed cell death in wheat (Triticum aestivum L.) endosperm cells is affected by drought stress.Protoplasma · 2018Article
- DELLA-dependent and -independent gibberellin signaling.Plant signaling & behavior · 2018Review
- Gibberellin Induces an Increase in Cytosolic CaPlant physiology · 2017Article
- Exploring cells with targeted biosensors.The Journal of general physiology · 2017Review
- A rice tonoplastic calcium exchanger, OsCCX2 mediates Ca2+/cation transport in yeast.Scientific reports · 2015Article
- A Role for Reactive Oxygen Species Produced by NADPH Oxidases in the Embryo and Aleurone Cells in Barley Seed Germination.PloS one · 2015Article
- Heme oxygenase-1 is involved in nitric oxide- and cGMP-induced α-Amy2/54 gene expression in GA-treated wheat aleurone layers.Plant molecular biology · 2013Article
- Interactive effect of calcium and gibberellin on nickel tolerance in relation to antioxidant systems in Triticum aestivum L.Protoplasma · 2011Article
- Gibberellic acid and cGMP-dependent transcriptional regulation in Arabidopsis thaliana.Plant signaling & behavior · 2010Review
- Genomic and functional characterization of StCDPK1.Plant molecular biology · 2009Article
- Interactions of two transcriptional repressors and two transcriptional activators in modulating gibberellin signaling in aleurone cells.Plant physiology · 2008Article
- Article
- Proteome analysis of rice root proteins regulated by gibberellin.Genomics, proteomics & bioinformatics · 2005Article
- Characterization of fructose-bisphosphate aldolase regulated by gibberellin in roots of rice seedling.Plant molecular biology · 2004Article
- OsCDPK13, a calcium-dependent protein kinase gene from rice, is induced by cold and gibberellin in rice leaf sheath.Plant molecular biology · 2004Article
- Analysis and effects of cytosolic free calcium increases in response to elicitors in Nicotiana plumbaginifolia cells.The Plant cell · 2002Article
- Abscisic Acid biosynthesis and response.The arabidopsis book · 2002Article
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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
The effects of gibberellic acid (GA3) and abscisic acid (ABA) on the temporal and spatial dynamics of cytosolic calcium concentration ([Ca2+]i) in aleurone protoplasts of barley (Hordeum vulgare L. cv. Himalaya) were measured by using fluorescence ratio analysis and confocal microscopy. After 4-6 h of treatment, GA3 induced a sustained increase in [Ca2+]i from 50 to 150 nM in aleurone protoplasts. The increase in [Ca2+]i preceded the GA3-induced increase in alpha-amylase synthesis and secretion by 4 h. The elevation of [Ca2+]i was highest in the peripheral cytoplasm and may play a role in coordinating the secretory events there. Reducing Ca2+ levels in the incubation medium to below 500 microM inhibited the increase in [Ca2+]i and the GA3-induced stimulation of alpha-amylase synthesis and secretion. These data suggest that GA3 may increase [Ca2+]i by increasing the influx of Ca2+ at the plasma membrane. ABA reversed the effect of GA3 on [Ca2+]i within 3 h, 2 h before its effect on alpha-amylase production could be detected. Thus changes in [Ca2+]i may play a role in mediating the effects of GA3 and ABA on the synthesis and secretion of alpha-amylase in the aleurone cell.
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