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  • 1
    Electronic Resource
    Electronic Resource
    Nematode Chemotaxis and Possible Mechanisms of Host/Prey Recognition (1984)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Phytopathology 22 (1984), S. 95-113 
    Details
    ISSN: 0066-4286
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.py.22.090184.000523
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Selective Feeding of Tubificids on Bacteria (1967)
    [s.l.] : Nature Publishing Group
    Nature 216 (1967), S. 1143-1144 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Homogenates of mixed populations of tubificids (Limno-drilus sp., Tubifex sp. and Peloscolex sp.) were analysed by gas-liquid chromatography for the presence of an organophosphate pesticide (diazinon) incorporated by bacteria on which the worms were fed. It was thus possible to establish, on the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2161143a0
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  • 3
    Electronic Resource
    Electronic Resource
    Studies on the biodegradation of parathion (1970)
    Springer
    Plant and soil 33 (1970), S. 273-281 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Four compounds formed as the results of parathion degradation byChlorella pyrenoidosa proteose were identified or partly characterized in these studies. The major parathion metabolite, aminoparathion, was shown by bioassay to be nontoxic to vinegar flies at the levels tested. Evidence is presented that aminoparathion is released rapidly from algal cells after this compound is formed from parathion. Metabolites of unknown chemical structure which were detected were partially characterized as follows: Metabolite 1 - contains sulfur and phenyl ring, strong cholinesterase inhibitor. Metabolite 2 - contains sulfur, lacks phenyl ring, not a cholinesterase inhibitor at levels tested. Metabolite 3 - contains phenyl ring but not sulfur, a strong cholinesterase inhibitor. Probably an oxon of parathion. The findings herein support previous conclusions that biotic forces, rather than abiotic factors, are of greater importance to the degradation of parathion under natural conditions extant in a temperate climate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01378220
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Studies on the biodegradation of parathion (1970)
    Springer
    Plant and soil 33 (1970), S. 273-281 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Four compounds formed as the results of parathion degradation byChlorella pyrenoidosa proteose were identified or partly characterized in these studies. The major parathion metabolite, aminoparathion, was shown by bioassay to be nontoxic to vinegar flies at the levels tested. Evidence is presented that aminoparathion is released rapidly from algal cells after this compound is formed from parathion. Metabolites of unknown chemical structure which were detected were partially characterized as follows: Metabolite 1 - contains sulfur and phenyl ring, strong cholinesterase inhibitor. Metabolite 2 - contains sulfur, lacks phenyl ring, not a cholinesterase inhibitor at levels tested. Metabolite 3 - contains phenyl ring but not sulfur, a strong cholinesterase inhibitor. Probably an oxon of parathion. The findings herein support previous conclusions that biotic forces, rather than abiotic factors, are of greater importance to the degradation of parathion under natural conditions extant in a temperate climate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01378220
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    The distribution and persistence of diazinon applied to plant and soil and its influence on rhizosphere and soil microflora (1966)
    Springer
    Plant and soil 25 (1966), S. 249-264 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary 1. Evidence was obtained of the rapid translocation of radioactive Diazion through bean plants and its emergence in bean root exudates maintained under sterile conditions. 2. The presence of bean rhizosphere microflora did not appear to be a factor in the metabolism of Diazinon by the bean plant. 3. Diazinon applied at the rate of 3 lbs per acre to soil under non-sterile conditions persisted for as long as 180 days after application. No Diazinon was detectable after 10 weeks in soil receiving 0.3 lbs per acre. 4. Diazinon or its degradation products exerted a selective effect common to both soil and rhizosphere microflora which expressed itself in the selective enrichment of a cocoidal rod. Numbers of fungi seemed unaffected by the presence of Diazinon. After 180 days a large number of the genus Streptomyces appeared as a seeming climax population. 5. The predominant microbial isolate utilized Diazinon as a sulfur, phosphorus, carbon and nitrogen source in that order of preference. The biodegradability of Diazinon was conditioned by its solubilization in a suitable carrier, and by the presence of an additional carbon source.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01347822
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  • 6
    Electronic Resource
    Electronic Resource
    Lectin studies of surface carbohydrates and induction of gland secretion in the free-living stages ofSchistosoma mansoni (1988)
    Springer
    Journal of chemical ecology 14 (1988), S. 691-700 
    Details
    ISSN: 1573-1561
    Keywords: Schistosoma mansoni ; lectins ; cercariae ; miracidia ; secretions ; surface carbohydrates
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Secretion from glands was observed when cercariae ofSchistosoma mansoni were exposed to certain lectins. Lectins fromMaclura pomifera, Pisum sativum, andTriticum vulgaris, were effective at 7.5 μ/ml. The effects of cercarial gland secretion caused byT. vulgaris agglutinin andArachis hypogaea agglutinin were blocked by pretreatment with the inhibiting glycan. Discharge of glands was not visualized after exposure of miracidia to lectins. The distribution of five labeled lectins was determined on live miracidia and cercariae. OnlyT. vulgaris agglutinin generally labeled the cercarial and miracidial bodies. Specific labeling occurred with the other lectins on the anterior, in glands or on their secretions, in flame cells in both stages, and on an unidentified ring of cells in miracidia. The possible mechanisms involved in changes caused by the lectins are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01013916
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  • 7
    Electronic Resource
    Electronic Resource
    Control of plant-parasitic nematodes by a nematicidal strain ofAspergillus niger (1994)
    Springer
    Journal of chemical ecology 20 (1994), S. 33-43 
    Details
    ISSN: 1573-1561
    Keywords: Aspergillus niger ; biological control ; plant-parasitic nematodes ; Meloidogyne incognita ; nematicidal activity ; Caenorhabditis elegans ; Rotylenchulus reniformis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract An isolate ofAspergillus niger (designated PD-42) was evaluated in laboratory, greenhouse, and field trials for efficacy in controlling plant-parasitic nematodes. In greenhouse experiments, PD-42 drenches containing spores of PD-42 on oatmeal significantly reduced galling on tomato due to root-knot nematode as compared to untreated controls. In a one-half acre field experiment, PD-42 incorporated in seed coats was associated with significantly increased yield and decreased root-knot galling on pepper. In a second one-half acre field experiment, PD-42 drenches significantly reduced tomato and pepper root galling due toMeloidogyne incognita, and nonsignificant yield increases occurred. In each field experiment, treatment with PD-42 reducedRotylenchulus reniformis populations. The nematicidal components of theA. niger culture filtrates include citric acid, oxalic acid, and undetermined molecules larger than 8000 MW.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02065989
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  • 8
    Electronic Resource
    Electronic Resource
    The author M.B. Dicklor should be added to author names and the following change made in the text (1995)
    Springer
    Journal of chemical ecology 21 (1995), S. 1893-1893 
    Details
    ISSN: 1573-1561
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02033684
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