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Role of Calcium in Signal Transduction of Commelina Guard Cells.
Open accessAbstract
The role of cytosolic Ca2+ in signal transduction in stomatal guard cells of Commelina communis was investigated using fluorescence ratio imaging and photometry. By changing extracellular K+, extracellular Ca2+, or treatment with Br-A23187, substantive increases in cytosolic Ca2+ to over 1 micromolar accompanied stomatal closure. The increase in Ca2+ was highest in the cytoplasm around the vacuole and the nucleus. Similar increases were observed when the cells were pretreated with ethyleneglycol-bis-(o-aminoethyl)tetraacetic acid or the channel blocker La3+, together with the closing stimuli. This suggests that a second messenger system operates between the plasma membrane and Ca2+-sequestering organelle(s). The endogenous growth regulator abscisic acid elevated cytosolic Ca2+ levels in a minority of cells investigated, even though stomatal closure always occurred. Ca2+-dependent and Ca2+-independent transduction pathways linking abscisic acid perception to stomatal closure are thus indicated.
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Cited by
Calcium channels activated by hydrogen peroxide mediate abscisic acid signalling in guard cells
Pei, Z.-M., Murata, Y., Benning, G., Thomine, S., Klüsener, B., Allen, G. J., Grill, E., & Schroeder, J. I. (2000) · Nature · doi:10.1038/35021067 · Cited by 2,109
Hydrogen Peroxide Is Involved in Abscisic Acid-Induced Stomatal Closure in Vicia faba
Zhang, X., Zhang, L., Dong, F., Gao, J., Galbraith, D. W., & Song, C.-P. (2001) · Plant Physiology · doi:10.1104/pp.126.4.1438 · Cited by 659
Abscisic acid signal transduction in guard cells is mediated by phospholipase D activity
Jacob, T., Ritchie, S., Assmann, S. M., & Gilroy, S. (1999) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.96.21.12192 · Cited by 288
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Metadata
- Authors
- Gilroy, S., Fricker, M. D., Read, N. D., & Trewavas, A. J.
- Venue
- The Plant Cell
- Publisher
- Oxford University Press (OUP)
- Published
- 1991-04-01
- Volume
- 3
- Issue
- 4
- Pages
- 333-344
- ISSN
- 1040-4651 (ISSN-L)
- 1532-298X
- OpenAlex
- W2108717583
- Cited by
- 342
- References
- 0
- FWCI
- 39.79
- Type
- journal article
- Language
- en
- Open access
- bronze
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- CoChat. (2026). Citation check: Role of Calcium in Signal Transduction of Commelina Guard Cells. https://app.cochat.ai/papers/10.1105/tpc.3.4.333
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- Gilroy, S., Fricker, M. D., Read, N. D., & Trewavas, A. J. (1991). Role of Calcium in Signal Transduction of Commelina Guard Cells. The Plant Cell. https://doi.org/10.1105/tpc.3.4.333
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