Effect of 2,4-Dichlorophenoxyacetic Acid on Different Metabolic Types of Bacteria

Hart, L. T.; Larson, A. D.

doi:10.1007/978-3-662-38284-4_16

Cited by 6 publications

(2 citation statements)

References 11 publications

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“…For example, inhibition of growth of denitrifying bacteria can be caused by concentrations as low as 0.2 ppm 2,4-D whereas in the case of some species of Rhizobium it is necessary to use as much as 8000 ppm. 13 The present investigation has also revealed large differences in the sensitivity of different strains to 2,4-D. The mechanism of absorption of 2,4-D into the cells of bacteria has not been fully explained.…”

Section: Discussionmentioning

confidence: 87%

The influence of 2,4‐dichlorophenoxyacetic acid on lactic acid bacteria

Libudzisz

Kirkwood²

1983

J Sci Food Agric

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The effect of 2,4-dichlorophenoxyacetic acid (2,4-D) (4 x 1 0 -5~4 x 10-3~) on the growth and physiological activity of Streptococcus lactis subsp. diacetylactis and Lactobacillus casei has been investigated when cultivated in milk and lactose-peptone media. The concentrations of 2,4-D applied in milk did not cause complete growth inhibition of any of the strains. The degree of inhibition was dependent upon the bacterium species and the herbicide dose. Growth of the tolerant strain-L. casei W-10-was reduced by about 40% (in the presence of 4 x l o -3~ 2,4-D), whereas the the level of lactic acid production remained almost unchanged. Under the sanie conditions, growth of the sensitive strain S. lactissubsp. diacetylactis239 wasreducedby almost 25 times and lactic acid production inhibited by about 40% in comparison with the controls. Cultivation of S. lactis subsp. diacetylactis 239 in lactose-peptone medium with 2 x l o -3~ 2,4-D was characterised by a lengthened lag-phase, lengthened generation time (3 times) and an increased rate of herbicide metabolism. In addition, selective or mutative action of 2,4-D has been shown. Herbicide treatment inhibited the cells of c.f.u. producing the least acid and enhanced the contribution of the active ones. Cells of c.f.u. with activities not found in the control population have also been revealed. Both species of bacteria were capable of metabolism of 2,4-D to 2,4-dichlorophenol.

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Section: Discussionmentioning

confidence: 87%

The influence of 2,4‐dichlorophenoxyacetic acid on lactic acid bacteria

Libudzisz

Kirkwood²

1983

J Sci Food Agric

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“…Denitrifying bacterial populations in soil have been reported to be enhanced by PCP (pentachlorophenol) (Ishizawa and Hatsuguchi, 1966) and by 2,4-D (2,4-dichlorophenoxyacetic acid) (Sethunathan, 1970), but to be decreased by MCPA (2-methyl-4-chlorophenoxyacetic acid) and propanil (De and Hukhopadhyay, 1971). Denitrification by cultures of denitrifying bacteria has been reported to be inhibited by diquat (Atkinson, 1973), MCPA, 2,4,5-T (2,4,5-trichlorophenoxyacetic acid) (Torstensson, 1974), 2,4-D, chlorbromuron, chloroxuron, fluometuron, metoxuron, neburon, diuron, linuron, siduron (Hart and Larson, 1966;Bollag and Nash, 1974;Bollag and Henninger, 1976), dalapon (Grant and Payne, 1982), simazine and atrazine (HcElhannon et al, 1984;Mills, 1984), to be enhanced by MCPA, 2,4,5-T, linuron and simazine (Torstensson, 1974), and to be .…”

Section: Introductionmentioning

confidence: 99%