2,4-dichlorobenzene oxygen butyl acetate pesticide residue degradation bacterium and produced bacterium agent thereof

Abstract

The invention provides a degradation bacterium which can degrade butyl 2, 4-dichlorophenoxy acetate pesticide residue and a microbial inoculum produced by the degradation bacterium, pertaining to the high biotechnology field, wherein, the applied strains are Gram-stain negative bacteria Ld1 which are identified as Pseudomonas sp.; the degradation bacterium is mainly and biologically characterized in that: the main biological characteristic is G<->; thallus takes the shape of short rods, and the size of the thallus is about 0.5 Mum to 1.0 Mum multiplied by 1.5 Mum to 5.0 Mum; oxidase, catalase, nitrate reduction and citrate utilization reactions are positive; lipase reactions, V.P. reactions, MR reactions, indophenol reactions are negative; and starch can not be hydrolyzed. The microbial inoculum is obtained after the completion of the fermentation of the Ld1 strains. The application of the degradation bacterium products can reduce the residual quantity of butyl 2, 4-dichlorophenoxy acetate pesticides by more than 70 percent and can solve the problem that butyl 2, 4-dichlorophenoxy acetate pesticide residue in the agricultural production exceeds the standard.

Description

1. Technical field [0001] The invention provides a 2,4-dichlorophenoxy butyl ester pesticide residue degrading bacteria and the bacterial agent produced therefrom, belonging to the field of biological high technology, which uses microorganisms to degrade chemical pesticide residues, and is suitable for green production in modern agricultural production. Production of pollution-free agricultural products. 2. Background technology [0002] The use of chemical pesticides has greatly promoted the development of modern agriculture, restored a large number of losses caused by plant diseases, insects, and weed damage for agricultural production, and greatly improved the labor efficiency and mechanization degree of agricultural production. played an invaluable role in the modernization process. But at the same time, pesticides are some toxic and harmful chemical substances. After they enter the ecological environment, they not only kill the organisms that are harmful to humans, but...

AI Technical Summary

Problems solved by technology

But at the same time, pesticides are some toxic and harmful chemicals. After they enter the ecological environment, they not only kill the organisms that are harmful to humans, but also cause serious harm to the ecological system.

Extensive use of pesticides has caused pesticide residues in agricultural products to exceed the standard, seriously affecting people's health and export earnings of agricultural products