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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 108 (1976), S. 259-263 
    ISSN: 1432-072X
    Keywords: Lindane ; Soil microorganisms ; Bacteria ; Actinomycetes ; Fungi ; Insecticide ; Chloride ; Respiration ; Degradation ; Utilization ; Pseudomonas
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Of 147 microorganisms isolated from a loamy sand, 71 showed good growth with lindane (γ-1,2,3,4,5,6-hexachlorocyclohexane) and produced chloride in an aqueous medium. Thirteen soil microorganisms were selected to study the utilization of lindane. Lindane was metabolized by the microbes to γ-2,3,4,5,6-pentachloro-1-cyclohexene (γ-PCCH), α-3,4,5,6-tetrachloro-1-cyclohexene (α-TCCH), β-3,4,5,6-tetrachloro-1-cyclohexene (β-TCCH), γ-3,4,5,6-tetrachloro-1-cyclohexene (γ-TCCH), and pentachlorobenzene (PCB). Cells of Pseudomonas sp. No. 62 grown on lindane simultaneously adapted to γ-PCCH, α-TCCH, β-TCCH, γ-TCCH, PCB, 1,2,3,4-tetrachlorobenzene (1,2,3,4-TCB) and 1,2,4,5-tetrachlorobenzene (1,2,4,5-TCB). The bacteria degraded each of these chemicals at least partially as indicated by an increased rate of oxygen consumption.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 105 (1975), S. 131-134 
    ISSN: 1432-072X
    Keywords: Lindane ; Soil Microorganisms ; Interaction ; Bacteria ; Fungi ; Respiration ; Chloride ; Degradation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Three lindane (γ-1,2,3,4,5,6-hexachlorocyclohexane) treated soils were studied under laboratory conditions to determine the interaction between lindane and the soil microorganisms. Microbial populations and respiration were monitored to study insecticide effects. Formation of lindane degradation products and chloride content were examined to determine effects of the microorganisms. Some populations in lindane treated soils showed temporary declines but all ultimately recovered to at least the level of the controls in 16 weeks. Respiration was stimulated over a 9-week period especially in the sandy and clay loams, suggesting the possibility of microbial degradation of the insecticide. Lindane degradation products separated and identified by TLC included γ-2,3,4,5,6-pentachloro-1-cyclohexene (γ-PCCH), α-3,4,5,6-tetrachloro-1-cyclohexene (α-TCCH), γ-3,4,5,6-tetrachloro-1-cyclohexene (γ-TCCH), and pentachlorobenzene (PCB). Chloride production increased in soils treated with higher levels of lindane.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 49 (1992), S. 120-128 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 57 (1996), S. 924 -931 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 8 (1968), S. 0 
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary. Laboratory experiments were conducted to determine if paraquat had any effect on soil micro-organisms and consequently on soil fertility.Numbers of bacteria and moulds tended to increase with incubation time as residual paraquat decreased. Lag periods of 1–5 days were observed in the development of soil microflora and concomitant degradation of paraquat. Under controlled culture conditions, Aerobacter aerogenes, Agrobacterium tumefaciens, Pseudomonas fluorescens and Bacillus cereus were able to utilize paraquat as sole carbon and nitrogen sources in synthetic media.Paraquat at 0–25, 0–5, 2–5 and 25 ppm cation was added to four different soils to study changes in microbial activities concomitant with decreases in herbicide concentration. Analytical recoveries were correlated inversely with clay mineral content, cation-exchange capacity and organic matter.Mineralization of peptone nitrogen by amnnonification and nitrification was stimulated by 0–25 ppm; higher rates up to 25 ppm had little influence. A bimodal effect or growth inversion was observed in several instances, with increased microbial development at intermediate concentrations. Paraquat at recommended field rates appeared to have no appreciable influence on general microbial activities of importance to soil fertility.Interaction entre U paraquat et les microbes dans les sols
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 8 (1968), S. 0 
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary. When paraquat was added to four different soils, nitrification was not appreciably affected but ammonification of soil organic-matter nitrogen was slightly retarded. Carbon dioxide evolution as well as oxygen consumption was used as an index of metabolic activity of soil micro-organisms and paraquat had a stimulatory effect at higher concentrations. Oxidation of added sulphur was slightly depressed. Paraquat decreased both the total mould and bacterial populations in Chehalis silt loam. After 30 days incubation the percentages of Streptomyces and Penicillia were markedly increased by most treatments but were little affected in Chehalis silt clay and Woodburn soils. Except for the temporary suppression of nitrification, paraquat had no significant influence on general microbial activities of importance to soil fertility. Some bimodal effects or toxicity inversions were observed with intermediate concentrations.Effet du paraquat sur les activités microbiennes dans les sols
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Industrial & engineering chemistry 26 (1934), S. 749-757 
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 51 (1993), S. 30-39 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 18 (1977), S. 190-199 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Summary SeventeenRhizobium japonicum cultures isolated from soybean nodules induced formation of nodules on taproots of soybean plants. All isolates reduced acetylene to ethylene to different extentsin vitro. Paper disc assay indicated that two insecticides, lindane (γ-1,2,3,4,5,6-hexachlorocyclohexane), chlorpyrifos (O,O-diethyl O-3,5,6-trichloro-2-pyridyl phosphorothioate), and a fungicide, thiram (tetramethylthiuratn disulphide) individually or in combination caused significant inhibition of the growth ofR. japonicum No. 16. The effects of insecticide-fungicide seed treatments on the nitrogenase activity of soybean plants in nitrogen-fixing capacity, weights of leaves, stems, and nodules were determined. Thiram, singly or in combination with lindane and/or chlorpyrifos, significantly delayed growth of the plants and affected the activity of nitrogenase in the fixation of nitrogen 3 weeks after treatments. No drastic effect of any of the pesticide treatments on soybean plant growth was observed after 8 weeks.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 20 (1978), S. 212-218 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Summary A simplified technique for assessing the effect of pesticides on non-target soil microorganisms was developed. Changes in microbial population determined by the dilution plate method, in nitrification by the soil perfusion technique, and in oxygen consumption using a differential respirometer are the only measurements required. A comparison of the effects observed for three pesticides, dieldrin, chlorpyrifos and Vorlex, in three soil types with those produced by an antibiotic, a fungicide, a nitrification inhibitor and steam pasteurization of the soil clearly demonstrate the effectiveness of the simple technique.
    Type of Medium: Electronic Resource
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