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An Abscisic Acid-Activated and Calcium-Independent Protein Kinase from Guard Cells of Fava Bean.
Open accessAbstract
Abscisic acid (ABA) regulation of stomatal aperture is known to involve both Ca2+-dependent and Ca2+-independent signal transduction pathways. Electrophysiological studies suggest that protein phosphorylation is involved in ABA action in guard cells. Using biochemical approaches, we identified an ABA-activated and Ca2+- independent protein kinase (AAPK) from guard cell protoplasts of fava bean. Autophosphorylation of AAPK was rapidly (~1 min) activated by ABA in a Ca2+- independent manner. ABA-activated autophosphorylation of AAPK occurred on serine but not on tyrosine residues and appeared to be guard cell specific. AAPK phosphorylated histone type III-S on serine and threonine residues, and its activity toward histone type III-S was markedly stimulated in ABA-treated guard cell protoplasts. Our results suggest that AAPK may play an important role in the Ca2+-independent ABA signaling pathways of guard cells.
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Citations
Cited by
ABA-Activated SnRK2 Protein Kinase is Required for Dehydration Stress Signaling in Arabidopsis
Yoshida, R., Hobo, T., Ichimura, K., Mizoguchi, T., Takahashi, F., Aronso, J., Ecker, J. R., & Shinozaki, K. (2002) · Plant and Cell Physiology · doi:10.1093/pcp/pcf188 · Cited by 608
Signaling mechanisms in abscisic acid-mediated stomatal closure
Hsu, P., Dubeaux, G., Takahashi, Y., & Schroeder, J. I. (2021) · The Plant Journal · doi:10.1111/tpj.15067 · Cited by 546
Narrowing Down the Targets: Towards Successful Genetic Engineering of Drought-Tolerant Crops
Yang, S., Vanderbeld, B., Wan, J., & Huang, Y. (2010) · Molecular Plant · doi:10.1093/mp/ssq016 · Cited by 423
Closing gaps: linking elements that control stomatal movement
Kollist, H., Nuhkat, M., & Roelfsema, M. R. G. (2014) · New Phytologist · doi:10.1111/nph.12832 · Cited by 357
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
- Li, J., & Assmann, S. M.
- Venue
- The Plant Cell
- Publisher
- Oxford University Press (OUP)
- Published
- 1996-12-01
- Volume
- 8
- Issue
- 12
- Pages
- 2359-2368
- ISSN
- 1040-4651 (ISSN-L)
- 1532-298X
- OpenAlex
- W2132767202
- Cited by
- 179
- References
- 0
- FWCI
- 13.55
- Type
- journal article
- Language
- en
- Open access
- green
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- Li, J., & Assmann, S. M. (1996). An Abscisic Acid-Activated and Calcium-Independent Protein Kinase from Guard Cells of Fava Bean. The Plant Cell. https://doi.org/10.1105/tpc.8.12.2359
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