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Role of Silicon in Alleviating Salt-Induced Toxicity in White Clover

文献类型: 外文期刊

作者: Guo, Qiang 1 ; Meng, Lin 1 ; Mao, Peichun 1 ; Tian, Xiaoxia 1 ;

作者机构: 1.Beijing Acad Agr & Forestry Sci, Beijing Res & Dev Ctr Grasses & Environm, Beijing 100097, Peoples R China

关键词: Salt tolerance;Silicon;Selective transport capacity for K+ over Na+;K+/Na+ homeostasis

期刊名称:BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY ( 影响因子:2.151; 五年影响因子:2.129 )

ISSN: 0007-4861

年卷期: 2013 年 91 卷 2 期

页码:

收录情况: SCI

摘要: To understand the role of silicon (Si) in alleviating sodium (Na) toxicity in Trifolium repens L. (white clover), the changes of biochemical and physiological parameters were investigated in four-week-old white clover seedlings exposed to 0 or 120 mM NaCl with or without 1.5 mM Si for 7 days. Results showed that added Si alone did not have any effects on the growth and Na+, K+ accumulations in white clover plants compared to the control (no added Si and NaCl). However, in the presence of NaCl, additional Si significantly enhanced the selective transport capacity for K+ over Na+ that contributed to reduced Na+ uptake and increased K+ uptake by roots, thereby improving its growth and K+/Na+ homeostasis in white clover. This study would provide a way for improving salt tolerance in important legume white clover forage.

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