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Differential Physiological Responses to Salt Stress between Salt-Sensitive and Salt-Tolerant japonica Rice Cultivars at the Post-Germination and Seedling Stages
| Content Provider | MDPI |
|---|---|
| Author | Ye, Shenghai Huang, Zhibo Zhao, Guibin Zhai, Rongrong Ye, Jing Wu, Mingming Yu, Faming Zhu, Guofu Zhang, Xiao Ming |
| Copyright Year | 2021 |
| Description | Soil salinity is a key source of abiotic stress in the cultivation of rice. In this study, two currently cultivated japonica rice species—Zhegeng 78 (salt-tolerant) and Zhegeng 99 (salt-sensitive)—with similar backgrounds were identified and used to investigate their differential responses to salt stress at the post-germination and seedling stages. Quantitative RT-PCR analysis demonstrated that the expression of OsSOS1, OsHAK1, and OsHAK5 at the post-germination stage, and the expression of OsHKT1,1, OsHTK2,1, and OsHAK1 at the seedling stage, were significantly higher in the salt-tolerant Zhegeng 78 compared with those of the salt-sensitive Zhegeng 99 under salt stress. The significantly lower $Na^{+}$ net uptake rate at the post-germination and higher $K^{+}$ net uptake rates at the post-germination and seedling stages were observed in the salt-tolerant Zhegeng 78 compared with those of the salt-sensitive Zhegeng 99 under salt stress. Significantly higher activity of peroxidase (POD) and the lower hydrogen peroxide $(H_{2}O_{2}$) accumulation were observed in the salt-tolerant Zhegeng 78 compared with those of salt-sensitive Zhegeng 99 under salt stress at the seeding stage. The salt-tolerant Zhegeng 78 might be valuable in future cultivation in salinity soils. |
| Starting Page | 2433 |
| e-ISSN | 22237747 |
| DOI | 10.3390/plants10112433 |
| Journal | Plants |
| Issue Number | 11 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-11-11 |
| Access Restriction | Open |
| Subject Keyword | Plants Agricultural Engineering Oryza Sativa Salt Stress Na+/k+ Homeostasis Hydrogen Peroxide Seed Germination Seedling Growth |
| Content Type | Text |
| Resource Type | Article |
