Accumulation and detoxification of cadmium in Brassica pekinensis and B. chinensis
Accumulation and detoxification of cadmium in Brassica pekinensis and B. chinensis
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DOI：
10.1007/s10535-007-0023-y
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发表时间：
2007-03
影响因子：
1.5
通讯作者：
C. P. Liu;Zhenguo Shen;Xiangdong Li
中科院分区：
文献类型：
--
作者：
C. P. Liu;Zhenguo Shen;Xiangdong Li
过量Cd对叶菜生长和金属吸收的影响。(简历)武越曼)和大白菜Brassica pekinensis(Lour.)鲁普。(简历)青研87-114)在水培条件下进行了研究。Cd浓度高于10µM时，两种植物的根伸长和叶片叶绿素含量均显著降低。拍摄了B的镜头。北京狗尾鱼的总镉和水溶态镉浓度显著高于北京狗尾鱼。中国。在所有Cd处理中，两种植物根对Cd的积累量均大于地上部。根中的Cd主要存在于细胞壁中。不同镉浓度下的地上部/根部比。北京人总是比INB更大。中国。但是，Cd在细胞壁中的浓度和比例不同。中国人高于印度人。北京狗狗。镉处理还增加了两种植物地上部总非蛋白硫醇(NPT)的浓度。植物地上部可溶性Cd含量与NPT含量呈极显著正相关。
The effect of excessive Cd on the growth and metal uptake by leafy vegetablesBrassica chinensisL. (cv. Wuyueman) andBrassica pekinensis(Lour.) Rupr. (cv. Qingyan 87-114) were studied in hydroponic solution culture. The Cd concentration higher than 10 µM significantly decreased the root elongation and leaf chlorophyll contents of both plant species. The shoots ofB. pekinensishad significantly higher concentrations of total and water-soluble Cd thanB. chinensis. The roots of both species accumulated more Cd than the shoots in all the Cd treatments. Most of the Cd in the roots was found in the cell walls. The shoot/root ratio of Cd concentrations inB. pekinensiswas always greater than that inB. chinensis. But, the concentration and proportion of Cd in the cell walls inB. chinensiswere higher than that inB. pekinensis. Cadmium treatments also increased the concentrations of total non-protein thiols (NPT) in the shoots of the both species. A significant correlation was found between the concentrations of soluble Cd and NPT in plant shoots.