EFFECTS OF COPPER AND ZINC ON SOIL MICROBIAL ENZYMES

被引：0

作者：

Kenarova, Anelia ^{[1
]}

Radeva, Galina ^{[2
]}

机构：

[1] St Kl Ohridski Univ Sofia, Fac Biol, Dept Ecol & Nat Protect, Sofia 1164, Bulgaria

[2] Bulgarian Acad Sci, Inst Mol Biol, BU-1113 Sofia, Bulgaria

来源：

COMPTES RENDUS DE L ACADEMIE BULGARE DES SCIENCES | 2010年 / 63卷 / 01期

关键词：

soil pollution; copper and zinc toxicity; soil enzymes; ALPHA-AMYLASE; DEHYDROGENASE-ACTIVITY; METALS; TOXICITY; BACILLUS; CALCIUM;

D O I：

暂无

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The adverse effect of Cu and Zn (300, 600 and 900 mg kg(-1) soil) soil contamination on four enzymes (phosphatase, invertase, amylase and dehydrogenase) was studied for short-term (7 days) and long-term (30 days) exposure in microcosms' experiments. Evaluating the rate of inhibition on enzymes activities, Cu proved to be more toxic than Zn. The enzymes studied can be arranged in terms of their sensitivity to Cu and Zn as follows: dehydrogenase > phosphatase > amylase > invertase. Most of the adverse effects on enzymes activities were recorded in the first week after heavy metal amendments following by slow recovery, except in the samples of the highest level of contamination. Stimulation effects were noticed on amylase and invertase activities. It was not found any significant correlation between metal concentrations (total and water soluble) and the rate of enzymes' inhibition.

引用

页码：105 / 112

页数：8

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