文献类型：期刊文献

中文题名：小白菜镉和钙的亚细胞分布及钙、镉互作的研究

英文题名：Cadmium Uptake and Subcellular Distribution in Shoots of Pakchoi and Cd-Ca Interaction

作者：孙光闻[1] 朱祝军[2,3] 方学智[4]

第一作者：孙光闻

机构：[1]华南农业大学园艺学院;[2]浙江大学农业生物技术学院园艺系;[3]浙江农林大学农业与食品科学学院园艺系;[4]中国林业科学研究院亚热带林业研究所

年份：2010

卷号：25

期号：6

起止页码：229-232

中文期刊名：华北农学报

外文期刊名：Acta Agriculturae Boreali-Sinica

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：小白菜;镉;钙;亚细胞分布

外文关键词：Pakchoi ; Cadmium ; Calcium ; Subcellular distribution

分类号：S634.01

摘要：采用水培的方法,研究0.1 mg/L和1 mg/L镉(Cd)处理时2个小白菜品种的Cd吸收和亚细胞分布及钙(Ca)、Cd互作关系。结果表明:Cd主要积累在小白菜的根中,杭州油冬儿地上部Cd含量显著高于沪青1号,但根中Cd含量相反。小白菜地上部亚细胞各组分中Cd含量随着营养液中Cd浓度增加而增加,Cd主要积累在细胞质组分中,其次为细胞壁组分,积累Cd量最少的是细胞器组分,两品种间存在差异,Cd在杭州油冬儿细胞壁组分的分配比率大于沪青1号。Ca也主要分布在细胞质组分中,0.1 mg/L Cd处理时,细胞质及细胞壁中的Ca、Cd为协同作用;1 mg/LCd处理时,二者为拮抗作用。
Cd uptake,subcellular distribution and interaction between Cd and Ca in pakchio were studied. The results showed that Cd was mainly kept in the roots of two cuhivars of pakchoi,and the concentration of Cd in shoot of cv. Hangzhouyoudong was higher than that of cv. Huqing No. 1 ,but the concentration of Cd in root was the opposite. The Cd concentrations of subcellular fraction increased with increasing Cd concentration in the growth medium. Cd was accumulated mainly in cytoplasm of shoots and this accumulation was fairly independent of Cd concentration in nutrient solution. The lowest Cd concentration was found in organelles fractions of both Cd concentrations. There were differences between two cultivars which the distribution rate of cell wall fraction in cv. Hangzhouyoudong was higher than that of cv. Huqing No. 1. Ca was mainly retained in the cytoplasm fraction. In cytoplasm and cell wall fractions, Cd and Ca had a synergistic effect at 0. 1 mg/L Cd concentration,and had an antagonistic effect at 1.0 mg/L Cd concentration.