安徽农业科学2017，Vol.45Issue(10)：8-10,3.
不同浓度钙·锌抑制剂对烟草镉积累及亚细胞分布的影响
Effects of Different Concentrations of Calcium and Zinc Inhibitors on Accumulation and Subcellular Distribution of Cadmium in Tobacco
摘要
Abstract
[Objective] The aim was to explore effects of different concentrations of calcium and zinc inhibitors on cadmium accumulation and subcellular distribution in tobacco.[Method] Taking Nanjiang 3 as material,we studied the subcellular distribution of cadmium in tobacco by soil culture pot experiment with adding different concentrations of calcium and zinc inhibitors.[Result] The cadmium content in whole subcellular of leaves and roots of tobacco was in order of cytosol,cell wall,chloroplast and mitochondria.When the concentration of cadmium in soil was 1 mg/kg,and the concentration of calcium inhibitor was 100 mg/kg,the cadmium decreased in cytosol,chloroplast and organelles of tobacco root,but increased in cell wall;when the concentration of cadmium in soil was 1 mg/kg,and the concentration of zinc inhibitor was 50 mg/kg,the cadmium decreased in all subcellular of tobacco,which indicated that adding 50 mg/kg zinc inhibitor had better effect than adding 100 mg/kg calcium inhibitor.When the concentration of cadmium in soil was 5 mg/kg,the concentration of cadmium in organelles of tobacco leaves and roots all increased,while the concentration of cadmium in the other 3 subcellular decreased.[Conclusion] The cadmium in cytosol is more than that in cell wall,and the cadmium in chloroplast and mitochondria was little.The tolerance of tobacco under different concentrations of calcium and zinc is strengthened.The cadmium in tobacco is combined on cell wall,and then transported into cytosol,and the cytosol has strong chamber,which may be main mechanism and important way to reduce cadmium in tobacco.关键词
钙/锌/烟草/镉/吸收/亚细胞分布Key words
Calcium and zinc/Tobacco/Cadmium/Absorption/Subcellular distribution分类
资源环境引用本文复制引用
宋晓慧,秦仕华,陆引罡..不同浓度钙·锌抑制剂对烟草镉积累及亚细胞分布的影响[J].安徽农业科学,2017,45(10):8-10,3.基金项目
湖南中烟公司资助项目(700377111206). （700377111206）
