Related Experiment Video
Updated: Aug 16, 2025
07:43
Production of Arbuscular Mycorrhizal (AM) Fungal Inoculum and Phenotypic Evaluation of Rice and AM Symbiosis Under Saline Conditions
Published on: March 14, 2025
282
OsSAP6 Positively Regulates Soda Saline-Alkaline Stress Tolerance in Rice.
Fengjin Zhu1, Kai Wang2, Danni Li1
1Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China.
Rice (New York, N.Y.)
|December 27, 2022
Summary
Overexpressing the OsSAP6 gene in rice enhances tolerance to soda saline-alkaline stress. This gene interacts with OsPK5, improving plant survival and growth under stress conditions.
Area of Science:
- Plant Science
- Molecular Biology
- Genetics
Background:
- Soil salinization poses a global environmental challenge, particularly in arid and semiarid regions.
- Northeastern China faces significant soda saline-alkaline stress, necessitating improved rice tolerance.
Purpose of the Study:
- To investigate the role of the rice stress-associated protein 6 (OsSAP6) gene in response to soda saline-alkaline stress.
- To elucidate the interaction between OsSAP6 and OsPK5 in regulating plant stress tolerance.
Main Methods:
- Gene expression analysis under varying NaHCO3 stress durations.
- Phenotypic characterization of OsSAP6-overexpressing rice lines.
- Yeast two-hybrid and luciferase complementation assays to study protein interactions.
Main Results:
- OsSAP6 expression increased under NaHCO3 stress, with OsSAP6-overexpressing rice showing enhanced germination, root growth, and seedling survival.
- OsSAP6 interacts with OsPK5, which also plays a role in stress tolerance.
- Overexpression of OsPK5 also improved rice tolerance to soda saline-alkaline stress.
Conclusions:
- OsSAP6 significantly enhances saline-alkaline tolerance in rice.
- OsSAP6 and OsPK5 interaction is crucial for regulating reactive oxygen species (ROS) homeostasis and promoting stress tolerance.
- OsSAP6 serves as a valuable resource for developing rice varieties with improved tolerance to soda saline-alkaline conditions.
Related Concept Videos
02:02Responses to Salt Stress
13.2K
Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
13.2K
02:41Responses to Drought and Flooding
10.8K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
10.8K
01:30Other Stress Responses in Bacteria
45
Bacteria have global regulatory systems that control several types of stress mechanisms. These include Pho regulon and the heat shock response, which are essential systems for environmental adaptation, such as nutrient limitation and proteotoxic stress. The Pho regulon and the heat shock response exemplify bacterial resilience, enabling rapid adaptation to fluctuating environmental conditions.Pho RegulonBacteria require phosphorus for essential cellular processes, including nucleic acid...
45
01:57Adaptations that Reduce Water Loss
25.9K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
25.9K
01:23Stringent Response in E. coli
37
Bacterial growth is closely tied to nutrient availability, with cells proliferating exponentially under favorable conditions and entering a stationary phase when resources become scarce. This transition is mediated by a regulatory mechanism known as the stringent response, which allows bacteria to adapt to nutrient deprivation by modulating gene expression and metabolic activity.During nutrient scarcity, intracellular amino acid levels decline. It results in the accumulation of uncharged tRNAs...
37
02:45Responses to Heat and Cold Stress
13.7K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.7K