Differential Physiological Responses to Salt Stress between Salt-Sensitive and Salt-Tolerant japonica Rice Cultivars at the Post-Germination and Seedling Stages

文献类型： 外文期刊

第一作者： Ye, Shenghai

作者： Ye, Shenghai;Zhai, Rongrong;Ye, Jing;Wu, Mingming;Yu, Faming;Zhu, Guofu;Zhang, Xiaoming;Huang, Zhibo;Zhao, Guibin

作者机构：

关键词： Oryza sativa; salt stress; Na+/K+ homeostasis; hydrogen peroxide; seed germination; seedling growth

期刊名称：PLANTS-BASEL （ 影响因子：4.658； 五年影响因子：4.827 ）

ISSN：

年卷期： 2021 年 10 卷 11 期

页码：

收录情况： SCI

摘要： 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 (H2O2) 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.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序