中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > Silicon Affects Transcellular and Apoplastic Uptake of Some Nutrients in Plants 土壤圈(英文版) 2015,25 (2)
Position: Home > Articles > Silicon Affects Transcellular and Apoplastic Uptake of Some Nutrients in Plants Pedosphere 2015,25 (2)

Silicon Affects Transcellular and Apoplastic Uptake of Some Nutrients in Plants

作  者：
Pooyan Mehrabanjoubani;Ahmad Abdolzadeh;Hamid Reza Sadeghipour;Mahnaz Aghdas
单  位：
Department of Biology, Faculty of Science, Golestan University, Gorgan (Iran);Department of Biology, Faculty of Science, Golestan University, Gorgan (Iran
关键词：
si;application;uptake;increased;cotton;apoplasti
摘  要：
The positive effects of silicon (Si) on growth of plants have been well documented; however, the impact of Si on plant nutrient uptake remains unclear. The growth, nutrient content and uptake of wheat (Triticum aestivum L.), canola (Brassica napus L.) and cotton (Gossypium hirsutum, L.) plants were evaluated with or without application of 1.5 mmol L-1 Si. Application of Si increased dry weights by 8%, 30% and 30% and relative growth rate (RGR) by 10%, 13% and 17% in the cotton, canola and wheat plants, respectively. The plant relative water content (RWC) was also increased, but the plant transpiration was decreased by Si application. The uptake and content of Ca2+ were 19% and 21% lower in the cotton and wheat plants with Si than those without Si, respectively; however, Si application increased both K+ and Fe uptake and contents in all plant species. Silicon application reduced B uptake and content only in cotton and increased P and Zn2+ contents in all three plant species. The decrease in Ca2+ uptake by Si application was sustained even in the presence of metabolic inhibitors 2,4-dinitrophenol and sodium cyanide. Uptake of Ca2+ by Si application was enhanced or did not change when plant shoots were saturated with water vapor or their roots were exposed to low temperature. Thus, Si application increased the uptake of transcellularly transported elements like K+, P, Zn2+ and Fe. In contrast, Ca2+ uptake which occurred via both apoplastic and transcellular pathways was decreased by Si application, possibly through reduction of apoplastic uptake. More efficient nutrient uptake might be another promoting effect of Si on plant growth.

相似文章

导出引用
计量
文章访问数: 18
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46