Effect of glucose on the amount of bacteria mineralizing 2,4-dichlorophenoxyacetic acid in soil |
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Authors: | F Kunc J Rybá?ová |
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Institution: | (1) Department of Ecology of Microorganisms, Institute of Microbiology, Czechoslovak Academy of Sciences, 142 20 Prague 4 |
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Abstract: | Plate numbers of bacteria and relative incidence of strains capable of mineralization of 2,4-dichlorophenoxyacetic acid (2,4-D)
in chernozem samples incubated for 14 d with the herbicide (50 ppm) in the presence or absence of glucose (1000 ppm) were
compared. Whereas the total number of bacteria increased 1.2-fold in the variant with 2,4-D and 2.4-fold in the variant with
glucose and the herbicide, the number of 2,4-D-mineralizing bacteria increased 12.1-fold and 34.2-fold, respectively. In a
collection of 96 isolates of soil bacteria substantially more strains capable of degradation of 2,4-D in the presence of glucose
were detected as compared with the variant without it, indicating that processes of cometabolic type are involved during the
degradation of this herbicide in the soil. |
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Keywords: | |
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