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Revealing the Role of the Calcineurin B-Like Protein-Interacting Protein Kinase 9 (CIPK9) in Rice Adaptive Responses to Salinity, Osmotic Stress, and K+ Deficiency
- Source :
- Plants, Plants, Vol 10, Iss 1513, p 1513 (2021), Volume 10, Issue 8
- Publication Year :
- 2021
- Publisher :
- MDPI AG, 2021.
-
Abstract
- In plants, calcineurin B-like (CBL) proteins and their interacting protein kinases (CIPK) form functional complexes that transduce downstream signals to membrane effectors assisting in their adaptation to adverse environmental conditions. This study addresses the issue of the physiological role of CIPK9 in adaptive responses to salinity, osmotic stress, and K+ deficiency in rice plants. Whole-plant physiological studies revealed that Oscipk9 rice mutant lacks a functional CIPK9 gene and displayed a mildly stronger phenotype, both under saline and osmotic stress conditions. The reported difference was attributed to the ability of Oscipk9 to maintain significantly higher stomatal conductance (thus, a greater carbon gain). Oscipk9 plants contained much less K+ in their tissues, implying the role of CIPK9 in K+ acquisition and homeostasis in rice. Oscipk9 roots also showed hypersensitivity to ROS under conditions of low K+ availability suggesting an important role of H2O2 signalling as a component of plant adaptive responses to a low-K environment. The likely mechanistic basis of above physiological responses is discussed.
- Subjects :
- CBL
0106 biological sciences
0301 basic medicine
calcium signalling
Stomatal conductance
Osmotic shock
stomata
Mutant
Plant Science
01 natural sciences
Article
potassium transport
03 medical and health sciences
CIPK
Protein kinase A
Protein kinase B
Ecology, Evolution, Behavior and Systematics
reactive oxygen species
Ecology
Chemistry
Effector
Kinase
AKT
Botany
food and beverages
HAK
Cell biology
030104 developmental biology
ABA
QK1-989
Homeostasis
010606 plant biology & botany
Subjects
Details
- ISSN :
- 22237747
- Volume :
- 10
- Database :
- OpenAIRE
- Journal :
- Plants
- Accession number :
- edsair.doi.dedup.....80b2dc22666cf04ce0dbbe9bcec3e577