锌铅暴露条件下菲律宾蛤仔消化腺和鳃内金属和金属硫蛋白的变化

doi:10.7523/j.issn.2095-6134.2010.4.004

摘要/Abstract

摘要：

通过慢性暴露实验研究了菲律宾蛤仔在锌(Zn²⁺),铅(Pb²⁺)单一胁迫及联合胁迫下,消化腺和鳃内富集Zn²⁺和Pb²⁺及其金属硫蛋白水平随Zn²⁺、Pb²⁺暴露浓度的变化规律.结果表明, Zn²⁺50μg/L、Pb²⁺25μg/L联合胁迫时,消化腺和鳃内重金属的富集低于Zn²⁺、Pb²⁺单一胁迫,表现为拮抗作用;MT含量随着Zn²⁺、Pb²⁺暴露质量浓度变化而变化,比较发现消化腺中MT含量随Pb²⁺暴露质量浓度的变化最显著(p<0.01).

关键词: 重金属, 金属硫蛋白, 联合作用, 拮抗作用

Abstract:

The paper discussed accumulation of heavy metals in the digestive glands and gills of Ruditapes philippinarum with single or combined exposure of zinc and lead and relationship between MT (metallothioneinm) induction and accumulation of heavy metals. Results indicated that the antagonistic effect of znic and lead was obvious in clam jointly exposed to zinc and lead (Zn²⁺ 50μg/L and Pb²⁺ 25μg/L). MT varied with exposure concentrations of zinc and lead and the effect of lead was significant.

Key words: heavy metals, metallothioneinm, joint toxicity, antagonistic effect

中图分类号:

Q178.53

苏文, 吴惠丰, 廖春阳, 薛钦昭, 曲莹. 锌铅暴露条件下菲律宾蛤仔消化腺和鳃内金属和金属硫蛋白的变化[J]. 中国科学院大学学报, 2010, 27(4): 456-462.

SU Wen, WU Hui-Feng, LIAO Chun-Yang, XUE Qin-Zhao, QU Ying. Metallothionein in digestive glands and gills of Ruditapes philippinarum exposed to zinc and lead[J]. , 2010, 27(4): 456-462.

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