ABSTRACT
It has been shown that soil pollution with heavy metals (copper, nickel) lead to negative changes in parameters characterizing potential biological activity of soil (nitrogen-fixation, breath, invertase activity, bacteria and fungi count). More profound changes were observed in sandy soil compared to loamy soil. A direct relationship of these effects with the content of mobile forms of heavy metals in soil has been established. For the comparative and prognostic investigation of the danger of soil pollution with heavy metals it has been suggested to use a coefficient of differences in the content of mobile forms and a coefficient of biological effect.
Subject(s)
Bacteria/drug effects , Copper/toxicity , Fungi/drug effects , Nickel/toxicity , Soil Microbiology/standards , Soil Pollutants/toxicity , Bacterial Physiological Phenomena , Copper/chemistry , Copper/standards , Fungi/physiology , Maximum Allowable Concentration , Nickel/chemistry , Nickel/standards , Soil Pollutants/analysis , USSRABSTRACT
The activity of acetylcholine esterase was determined in 50 strains of the Pseudomonas genus: Ps. aurantiaca (6 strains), Ps. aeruginosa (8 strains), Ps. fluorescens (31 strains), Ps. putida (1 strain), Ps. ovalis (1 strain), Ps. aureofaciens (1 strain), Ps. geniculata (1 strain), and Ps. nonliquefaciens (1 strain). The active strains of Ps. aeruginosa and Ps. aurantiaca are described.