Role of Silicon in Alleviating SaltInduced Toxici

Authors: Qiang Guo Lin Meng Peichun Mao Xiaoxia Tian

Publish Date: 2013/06/18

Volume: 91, Issue: 2, Pages: 213-216

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Abstract

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 fourweekold white clover seedlings exposed to 0 or 120 mM NaCl with or without 15 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 forageThis research was financially supported by the scientific innovation ability construction project of Beijing Academy of Agriculture and Forestry Sciences BAAFS Grant No KJCX201101003 and the International Cooperation and Exchange Project of China Grant No 2008DFR30200 We are grateful to the anonymous reviewers and editors for their valuable suggestions and comments on the initial version of the manuscript

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