Effect of silica ions and nano silica on rice plants under salinity stress
Effect of silica ions and nano silica on rice plants under salinity stress
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DOI：
10.1016/j.ecoleng.2016.11.060
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发表时间：
2017-02-01
影响因子：
3.8
通讯作者：
Naguib, Deyala M.
中科院分区：
文献类型：
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作者：
Abdel-Haliem, Mahmoud E. F.;Hegazy, Hegazy S.;Naguib, Deyala M.
硅（Si）是土壤中含量丰富的宏量元素，能帮助植物耐受环境胁迫条件，改善土壤条件。在这项工作中，我们研究了硅离子和二氧化硅纳米颗粒（均提取自稻草）的生理生化反应和表达的两个硅吸收基因LSil和LSi2在NaCl盐浓度增加（0，100，200，400和800 mM）的影响。结果表明，硅离子显著减弱了NaCl对植物生理生化的不利影响。这是由于茉莉酸（JA）信号传导的其他原因。事实上，这种植物激素上调硅吸收基因在盐处理的植物提供硅离子的表达，激活其抗氧化防御系统和诱导渗透压产生。(C)© 2016 Elsevier B.V.版权所有。
Silicon (Si) is an abundant macro-element in the soil that helps plants tolerate environmental stress conditions and can ameliorate soil conditions. In this work, we studied the effects of Si ions and silica nanoparticles (both extracted from rice straw) on the physiological and biochemical responses and the expression of the two silicon uptake genes LSil and LSi2 in rice under increasing NaC1 salt concentrations (0, 100, 200, 400 and 800 mM). Results showed that silicon ions significantly attenuated the detrimental physiological and biochemical effects of NaC1 on plants. This was due among other reasons to jasmonic acid (JA) signaling. Indeed, this phytohormone up-regulated the expression of the silicon uptake genes in salt-treated plants supplied with silica ions, activated their antioxidant defense systems and induced osmolyte production. (C) 2016 Elsevier B.V. All rights reserved.