期刊
ACTA PHYSIOLOGIAE PLANTARUM
卷 36, 期 9, 页码 2531-2535出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11738-014-1575-z
关键词
Silicon; Salt stress; Osmotic stress; Ion toxicity
资金
- National Natural Science Foundation of China [31101597]
- West Light Foundation of the Chinese Academy of Sciences, Chinese Universities Scientific Fund [QN:2012048]
- 111 project of Chinese Education Ministry [B12007]
Salt usually stresses plants in two ways, osmotic stress and ion toxicity. Plant responds to salinity in two distinct phases through time. It is known that silicon (Si) could alleviate salt stress by decreasing the Na+ accumulated in the leaf. In order to determine the function of Si in the two-phase growth response (osmotic and ion toxicity) to salinity, we selected the wheat cultivar Changwu 134 out of 10 wheat cultivars, and confirmed that it responds to salinity in two distinct phases through time. The fresh weight, leaf area, and leaf Na+ concentration were measured during 31 days of 120 mM NaCl supplemented with 1 mM Si treatment. The results revealed that the growth of plants under salinity conditions both with and without Si application were in accordance with the two-phase growth model. Si alleviated the salt stress in the both two-phase growth, but the alleviative effects were more pronounced in the osmotic stress phase than ion toxicity phase. These results clearly showed that Si can enhance plant salt tolerance by alleviating the salt-induced osmotic stress.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据