DDT uptake and growth ofEuglena gracilis

Koning, H. W. de; Mortimer, D. C.

doi:10.1007/bf01539934

Cited by 15 publications

(3 citation statements)

References 2 publications

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“…S. notophora and T. pyriformis accumulated about 0.5% of the DDT, whereas in B. intermedium, DDT accumulation continued until the end of the experiment, when the organism had accumulated 90%o of the DDT. Another flagellate protozoan, Euglena gracilis, also accumulated DDT without eliminating it (56). As pointed out earlier, such species can be used as indicators of DDT contamination in water.…”

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confidence: 85%

Accumulation, metabolism, and effects of organochlorine insecticides on microorganisms.

Lal¹,

Saxena²

1982

Microbiological Reviews

150

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Section: Downloaded Frommentioning

confidence: 85%

Accumulation, metabolism, and effects of organochlorine insecticides on microorganisms.

Lal¹,

Saxena²

1982

Microbiological Reviews

150

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“…Selected chlorinated hydrocarbons were taken up from both water and soil by fungal and actinomycete myelia (2,8). Cells of Euglena gracilis also have been reported to take up DDT from their environment (4). These studies were concerned with uptake by intact cells, and little is known of the distribution of DDT within the cells.…”

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confidence: 99%

Location and Consequences of 1,1,1-Trichloro-2,2-bis(p-Chlorophenyl) Ethane Uptake by Bacillus megaterium

Hicks¹,

Corner²

1973

Applied Microbiology

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No detrimental effects of 1,1, 1-trichloro-2, 2-bis(p-chlorophenyl)ethane (DDT) were observed when cells of Bacillus megaterium were grown from small inocula in nutrient media containing up to 100 Mg of DDT/ml. However, when the ratio of DDT to biomass of resting cells was held constant, levels of DDT as low as 1 Mg/ml (0.5 Mg/mg of cell dry weight) enhanced the rate of death in the population. The lethal action of DDT was both time-and dose-dependent so that higher doses required less time to effect the same killing than did lower doses. Intact cells bound a maximum of about 1.7 gg of DDT/mg of cell dry weight, of which about 75% was localized in the protoplast membrane. Much of the bound DDT was subsequently lost to the suspending medium and the aqueous stability of the returned DDT was enhanced, possibly by association with solubilized cell materials. A small quantity of bound DDT was converted to 1, 1-dichloro-2, 2-bis(p-chlorophenyl)ethane, which was released from cells somewhat faster than DDT. Apparently the lethal action of DDT was related to its binding in the membrane, but respiration was not inhibited. The atypical macroscopic appearance of membranes isolated from treated cells suggested that cell death may result from altered membrane chemistry.

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“…In some cases, the changes were concluded to be no greater than those caused by climate or other ecological factors (Bishop, 1947;DeKoning and Mortimer, 1971). Others reported that the effects might influence the algal population composition in nature (Lazaroff and Moore, 1966;Woodwell, et a1., 1967;Mosser, et al, 1972;Batterson, et a1., 1972).…”

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confidence: 99%

The effects of selected pesticides on ten isolates of terrestrial algae.

Scheer¹

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DDT uptake and growth ofEuglena gracilis

Cited by 15 publications

References 2 publications

Accumulation, metabolism, and effects of organochlorine insecticides on microorganisms.

Accumulation, metabolism, and effects of organochlorine insecticides on microorganisms.

Location and Consequences of 1,1,1-Trichloro-2,2-bis(p-Chlorophenyl) Ethane Uptake by Bacillus megaterium

The effects of selected pesticides on ten isolates of terrestrial algae.

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