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Silicon nutrition alleviates the lipid peroxidation and ion imbalance of Glycyrrhiza uralensis seedlings under salt stress

文献类型： 外文期刊

作者： Li, Yue-Tong 1 ; Zhang, Wen-Jin 1 ; Cui, Jia-Jia 3 ; Lang, Duo-Yong 4 ; Li, Ming 5 ; Zhao, Qi-Peng 1 ; Zhang, Xin-Hui 1 ;

作者机构： 1.Ningxia Med Univ, Coll Pharm, 1160 Shengli St, Yinchuan 750004, Peoples R China

2.Minist Educ, Ningxia Engn & Technol Res Ctr Hui Med Modernizat, Ningxia Collaborat Innovat Ctr Hui Med, Lab Hui Ethn Med Modernizat, 1160 Shengli St, Yinchuan 750004, Peoples R China

3.Gansu Agr Univ, Coll Agron, 1 Yingmen Village, Lanzhou 730070, Peoples R China

4.Ningxia Med Univ, Lab Anim Ctr, 1160 Shengli St, Yinchuan 750004, Peoples R China

5.Ningxia Acad Agr & Forestry Sci, Desertificat Control Inst, 590 Huanghe East Rd, Yinchuan 750002, Peoples R China

关键词： Glycyrrhiza uralensis;Antioxidant enzymes;K+/Na+;Salt stress;Silicon

期刊名称：ACTA PHYSIOLOGIAE PLANTARUM （ 影响因子：2.354； 五年影响因子：2.711 ）

ISSN：

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收录情况： SCI

摘要： Soil salinity reduces growth of Glycyrrhiza uralensis in arid and semi-arid areas of north-west in China. Silicon (Si) nutrition may alleviate salt stress in many crops including grain crop, fruit crop, and vegetable crop. In this study, the alleviating effects of Si on growth characteristics, antioxidant enzyme activity (SOD and POD) and MDA concentration, and K+ and Na+ concentrations in G. uralensis seedlings subjected to 50 mM NaCl stress were investigated. The results showed that NaCl stress imposed significant reduction in root length, secondary root number, leaf number, and stem and total dry weight of G. uralensis. NaCl stress also significantly reduced the activities of SOD and POD, and ration of K+/Na+, but significantly increased MDA concentration in leaves of G. uralensis seedling. The addition of Si increased SOD and POD activities, and reduced MDA concentration, which resulting in greater reactive oxygen species detoxification and lower lipid peroxidation. Si also significantly increased the ratio of K+/Na+ in stem and leaves of G. uralensis. In conclusion, Si could alleviate adverse effects of salt stress probably by decreasing Na+ concentration and improving antioxidant enzyme activity of G. uralensis, and these alleviating effects were dependent on Si concentration and on Si processing time.

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[1]Silicon alleviates salt and drought stress of Glycyrrhiza uralensis seedling by altering antioxidant metabolism and osmotic adjustment. Zhang, Wenjin,Xie, Zhicai,Zhang, Xinhui,Zhang, Xinhui,Wang, Lianhong,Lang, Duoyong,Li, Ming.

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