Changes in enzyme activity and functional diversity in soil induced by Cd and glucose addition

3rd International Conference Environment and Sustainable Development of Territories: Ecological Challenges of the 21st Century

生态环境科学;地球科学;经济学

Gilmullina, A.R.^1 ; Galitskaya, P.Yu.^1 ; Selivanovskaya, S.Yu.^1

Institute of Environmental Sciences, Kazan Federal University, Kremlevskaya str. 18, 420008, Russia^1

关键词: Agricultural soils;    Cellobiohydrolases;    Functional diversity;    Inhibiting agents;    Model experiments;    Phosphatase activity;    Stimulating effects;    Toxic heavy metals;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/107/1/012058/pdf
DOI  :  10.1088/1755-1315/107/1/012058

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Toxic heavy metal (HM) contamination is a major global issue as it may have an indirect effect on the health of soil, plants, animals and, consequently, on human health. Agricultural soils' fertilization is one of the reported sources of HM pollution in the world. In this case simultaneous input of stimulating and inhibiting agents into soil takes place, and effects of the combined influence of these agents is hardly predictable. In this study, a simultaneous inhibiting and stimulating effect of Cd and glucose on soil microbes was studied in a model experiment. Enzyme activities (phosphatase, β-glucosidase and cellobiohydrolase) and functional diversity (BIOLOG®EcoPlates ™) were assessed as a test functions. Cd (300 μg Cd g-1) amendment had a negative effect only on phosphatase activity. Glucose (3 mg C g-1) addition inhibited β-glucosidase activity and stimulated functional diversity. In joint addition of Cd and Glucose the leading effect belonged to that agent which had the greatest effect in case when it was added separately.