Rapid Accumulation of Proline Enhances Salinity Tolerance in Australian Wild Rice Oryza australiensis Domin
Abstract
:1. Introduction
2. Results
2.1. Wild Rice O. australiensis Rapidly Accumulated Free Proline under Salinity Stress
2.2. Wild Rice O. australiensis Activated Proline Synthesis and Depressed Proline Degradation Genes at the Early Stage of Exposure to Salinity Stress
2.3. Wild Rice O. australiensis Showed a High Tolerant Level to Salinity Stress
2.4. Wild Rice O. australiensis Exhibited Higher Root Growth and Biomass Than Cultivated Rice under Salinity Stress
2.5. Wild Rice O. australiensis Lowered Osmotic Potential at the Early Stage of Exposure to Salinity Stress
2.6. Wild Rice O. australiensis Maintained Higher Relative Water Content and Cell Membrane Integrity under Salinity Stress Compared to Salt-Sensitive Cultivated Rice
2.7. Wild Rice O. australiensis Accumulated Less Toxic Ion and Maintained a Lower Na+/K+ Ratio in Shoots under Salinity Stress Compared to Cultivated Rice
3. Discussion
4. Materials and Methods
4.1. Plant Material
4.2. Seedling Preparation and Salinity Stress Assay
4.3. Determination of Proline Content
4.4. Gene Expression Analysis
4.5. Determination of Relative Water Content
4.6. Determination of Osmotic Potential
4.7. Determination of Sodium and Potassium Content
4.8. Measurement of Electrolyte Leakage
4.9. Statistical Analysis
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Nguyen, H.T.T.; Das Bhowmik, S.; Long, H.; Cheng, Y.; Mundree, S.; Hoang, L.T.M. Rapid Accumulation of Proline Enhances Salinity Tolerance in Australian Wild Rice Oryza australiensis Domin. Plants 2021, 10, 2044. https://doi.org/10.3390/plants10102044
Nguyen HTT, Das Bhowmik S, Long H, Cheng Y, Mundree S, Hoang LTM. Rapid Accumulation of Proline Enhances Salinity Tolerance in Australian Wild Rice Oryza australiensis Domin. Plants. 2021; 10(10):2044. https://doi.org/10.3390/plants10102044
Chicago/Turabian StyleNguyen, Ha Thi Thuy, Sudipta Das Bhowmik, Hao Long, Yen Cheng, Sagadevan Mundree, and Linh Thi My Hoang. 2021. "Rapid Accumulation of Proline Enhances Salinity Tolerance in Australian Wild Rice Oryza australiensis Domin" Plants 10, no. 10: 2044. https://doi.org/10.3390/plants10102044