豌豆根对Hg203标记的醋酸苯汞和醋酸汞的吸收及细胞分布的比较研究。
Comparative study of uptake and cellular distribution of Hg203-labeled phenyl-mercuric acetate and mercuric acetate by pea roots.
作者信息
Rao A V, Fallin E, Fang S C
出版信息
Plant Physiol. 1966 Mar;41(3):443-6. doi: 10.1104/pp.41.3.443.
Uptake and cellular distribution of mercury(203) from dilute mercuric acetate or phenylmercuric acetate solutions by excised pea roots (Pisum sativum) have been investigated. The time course of uptake showed that the amount of mercury uptake was increased with the time of incubation, and was similar for inorganic mercury or phenylmercuric acetate. The trend of mercury(203) incorporation into cellular components from mercuric acetate and phenylmercuric acetate differed greatly as the time of incubation increased. The concentrations of mercuric acetate and phenylmercuric acetate solutions or the temperature of incubation also affected the mercury(203) uptake as well as its cellular distribution. Longer time of exposure or higher concentration resulted in a greater mercury incorporation into mitochondrial fraction from phenylmercuric acetate than from inorganic mercury. This difference in intracellular distribution may be responsible for the degree of toxicity between inorganic mercury and phenylmercuric acetate in biological systems.
已对豌豆根（豌豆）从稀醋酸汞或醋酸苯汞溶液中摄取汞（203）及其细胞内分布进行了研究。摄取的时间进程表明，汞的摄取量随孵育时间增加而增加，无机汞或醋酸苯汞的情况类似。随着孵育时间延长，汞（203）从醋酸汞和醋酸苯汞掺入细胞成分的趋势差异很大。醋酸汞和醋酸苯汞溶液的浓度或孵育温度也会影响汞（203）的摄取及其细胞内分布。较长的暴露时间或较高的浓度导致从醋酸苯汞掺入线粒体部分的汞比从无机汞掺入的更多。细胞内分布的这种差异可能是生物系统中无机汞和醋酸苯汞毒性程度不同的原因。
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