Abstract
Abiotic stresses impose major penalties on plant growth and agricultural crop production. Understanding the mechanisms by which plants perceive these abiotic stresses, and the subsequent signal transduction that activates their adaptive responses, is therefore of vital importance for improving plant stress tolerance in breeding programs. Among the plethora of second messengers employed by plant cells, calcineurin B–like proteins (CBLs) and CBL-interacting protein kinases (CIPKs) have emerged as critical components of the signal transduction pathways and regulators of plant ionic homeostasis under stress conditions. This chapter summarizes the current knowledge on interaction between CIPKs and K+ transport systems, and the role of the former in regulating cell ionic relations and K+ homeostasis in plants grown under adverse environmental conditions.
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- ABA:
-
Abscisic acid
- AKT:
-
Arabidopsis potassium transporter
- [Ca2+]cyt :
-
Cytosolic concentration of calcium
- CaM:
-
Calmodulin
- CBL:
-
Calcineurin B–like protein
- CIPK:
-
CBL-interacting protein kinase
- CDPK:
-
Ca2+-dependent protein kinase
- CML:
-
CaM-like protein
- CPDK:
-
Calcium-dependent protein kinase
- E k :
-
Equilibrium potential
- GORK:
-
Guard cells outward-rectifying potassium channel
- HAK:
-
High-affinity potassium transporter
- KAT:
-
Inward-rectifying Shaker-like potassium channel
- KC1:
-
Silent Shaker-like potassium channel
- KUP:
-
K+ uptake permease
- mRNA:
-
Messenger RNA
- NADPH:
-
Reduced nicotinamide adenine dinucleotide phosphate
- NO:
-
Nitric oxide
- PCD:
-
Programmed cell death
- PEG:
-
Polyethylene glycol
- PLP:
-
Pyridoxal-5'-phosphate
- PP2C:
-
2C-Type protein phosphatase
- RBOH:
-
Respiratory burst oxidase homologue
- ROS:
-
Reactive oxygen species
- SKOR:
-
Stelar outward-rectifying potassium channel
- SNO1:
-
Sensitive to nitric oxide 1
- SPIK:
-
Shaker pollen inward K+ channel
- TPK:
-
Tandem-pore potassium channel
- V-ATPase:
-
Vacuolar adenosine triphosphate
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This work was supported by the Australian Research Council and Australia–India Strategic Research Funding grants to Sergey Shabala.
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Alnayef, M., Bose, J., Shabala, S. (2018). Potassium Uptake and Homeostasis in Plants Grown Under Hostile Environmental Conditions, and Its Regulation by CBL-Interacting Protein Kinases. In: Kumar, V., Wani, S., Suprasanna, P., Tran, LS. (eds) Salinity Responses and Tolerance in Plants, Volume 1. Springer, Cham. https://doi.org/10.1007/978-3-319-75671-4_5
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