Abstract
Nowadays, pesticides are widely used in preventing and controlling the diseases and pests of crop, but at the same time pesticide residues have brought serious harm to human’s health and the environment. It is an important subject to study microbial degradation of pesticides in soil environment in the field of internationally environmental restoration science and technology. This paper summarized the microbial species in the environment, the study of herbicide and pesticides degrading bacteria and the mechanism and application of pesticide microbial degrading bacteria. Cypermethrin and other pyrethroid pesticides were used widely currently, while they were difficult to be degraded in the natural conditions, and an intermediate metabolite, 3-phenoxy benzoic acid would be produced in the degradation process, causing the secondary pollution of agricultural products and a series of problems. Taking it above as an example, the paper paid attention to the degradation process of microorganism under natural conditions and factors affecting the microbial degradation of pesticide. In addition, the developed trend of the research on microbial degradation of pesticide and some obvious problems that need further solution were put forward.
Highlights
From the end of the 20th century to the present, the total global grain output has increased from 500 million tons to 700 million tons [1]
In addition to the above, there are a lot of pesticide degrading bacteria, such as Escherichia coli, Clostridium, Escherichia coli, Bacillus licheniformis, Thiobacillus and so on
The results showed that JCN13 has higher hydrophobicity and degradation ability than JC1, which mean that the high hydrophobicity of the cell of degrading bacteria can enhance the degradation of CY
Summary
From the end of the 20th century to the present, the total global grain output has increased from 500 million tons to 700 million tons [1]. 27.5–37.5 million tons a year, due to pests and other causes [4] To avoid such losses, pesticides are widely used to control agricultural and household pests [5]. Studies on microbial degradation of pesticide residues originated in 1940s, and as people pay more attention to the environment, the research on the degradation process and degradation mechanism of organic pollutants has been deeply studied. Bacteria in nature could degrade the pesticide residues, with low cost and environmentally friendly and it would not cause secondary pollution. The review was of significant meaning and value to provide reference for other studies, such as biodegradation of other types of pesticides or veterinary drugs, using CY pesticides to biodegrade environmental pollution, eliminating or reducing pesticide residues in agricultural products
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