The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Non‐selective cation channel activity of aquaporin AtPIP2;1 regulated by Ca2+ and pH
Open accessAbstract
The aquaporin AtPIP2;1 is an abundant plasma membrane intrinsic protein in Arabidopsis thaliana that is implicated in stomatal closure, and is highly expressed in plasma membranes of root epidermal cells. When expressed in Xenopus laevis oocytes, AtPIP2;1 increased water permeability and induced a non‐selective cation conductance mainly associated with Na+. A mutation in the water pore, G103W, prevented both the ionic conductance and water permeability of PIP2;1. Co‐expression of AtPIP2;1 with AtPIP1;2 increased water permeability but abolished the ionic conductance. AtPIP2;2 (93% identical to AtPIP2;1) similarly increased water permeability but not ionic conductance. The ionic conductance was inhibited by the application of extracellular Ca 2+ and Cd 2+, with Ca 2+ giving a biphasic dose–response with a prominent IC 50 of 0.32 mм comparable with a previous report of Ca 2+ sensitivity of a non‐selective cation channel (NSCC) in Arabidopsis root protoplasts. Low external pH also inhibited ionic conductance (IC 50 pH 6.8). Xenopus oocytes and Saccharomyces cerevisiae expressing AtPIP2;1 accumulated more Na+ than controls. Establishing whether AtPIP2;1 has dual ion and water permeability in planta will be important in understanding the roles of this aquaporin and if AtPIP2;1 is a candidate for a previously reported NSCC responsible for Ca 2+ and pH sensitive Na+ entry into roots.
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Boursiac, Y., Chen, S., Luu, D.-T., Sorieul, M., van den Dries, N., & Maurel, C. (2005) · Plant Physiology · doi:10.1104/pp.105.065029 · Cited by 566
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Isayenkov, S. V., & Maathuis, F. J. M. (2019) · Frontiers in Plant Science · doi:10.3389/fpls.2019.00080 · Cited by 1,161
The Role of Na+ and K+ Transporters in Salt Stress Adaptation in Glycophytes
Assaha, D. V. M., Ueda, A., Saneoka, H., Al-Yahyai, R., & Yaish, M. W. (2017) · Frontiers in Physiology · doi:10.3389/fphys.2017.00509 · Cited by 914
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Balasubramaniam, T., Shen, G., Esmaeili, N., & Zhang, H. (2023) · Plants · doi:10.3390/plants12122253 · Cited by 740
Energy costs of salt tolerance in crop plants
Munns, R., Day, D. A., Fricke, W., Watt, M., Arsova, B., Barkla, B. J., Bose, J., Byrt, C. S., Chen, Z., Foster, K. J., et al. (2020) · New Phytologist · doi:10.1111/nph.15864 · Cited by 517
Self-citationOsmotic adjustment and energy limitations to plant growth in saline soil
Munns, R., Passioura, J. B., Colmer, T. D., & Byrt, C. S. (2020) · New Phytologist · doi:10.1111/nph.15862 · Cited by 481
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Metadata
- Authors
- Byrt, C. S., Zhao, M., Kourghi, M., Bose, J., Henderson, S. W., Qiu, J., Gilliham, M., Schultz, C., Schwarz, M., Ramesh, S. A., Yool, A., & Tyerman, S.
- Venue
- Plant, Cell & Environment
- Publisher
- Wiley
- Published
- 2016-10-18
- Volume
- 40
- Issue
- 6
- Pages
- 802-815
- ISSN
- 0140-7791 (ISSN-L)
- 1365-3040
- OpenAlex
- W2527743689
- Cited by
- 185
- References
- 1
- FWCI
- 8.28
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Byrt, C. S., Zhao, M., Kourghi, M., Bose, J., Henderson, S. W., Qiu, J., Gilliham, M., Schultz, C., Schwarz, M., Ramesh, S. A., Yool, A., & Tyerman, S. (2017). Non‐selective cation channel activity of aquaporin AtPIP2;1 regulated by Ca2+ and pH. Plant, Cell & Environment. https://doi.org/10.1111/pce.12832
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