Enzymatic Conjugation and Insecticide Metabolism

Yang, Raymond S. H.

doi:10.1007/978-1-4899-2212-0_5

Cited by 34 publications

(14 citation statements)

References 176 publications

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“…Several authors have reviewed conjugation reactions and the group transfer enzymes in general (Williams, 1974;Smith and Litwack, 1980;Jakoby and Habig, 1982;Jakoby et al, 1982;Caldwell, 1982;Rafter et aI., 1983;Paulson et aI., 1986) and in insects (Smith, 1968;Yang, 1976;Ahmad and Forgash, 1976;Dauterman and Hodgson, 1978;Dauterman, 1980Dauterman, , 1985Wilkinson, 1986).…”

Section: Group Transfer Enzymesmentioning

confidence: 97%

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Enzymes Involved in the Metabolism of Plant Allelochemicals

Ahmad

Brattsten

Mullin

et al. 1986

Molecular Aspects of Insect-Plant Associations

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Section: Group Transfer Enzymesmentioning

confidence: 97%

“…In some insect species they occur in the soluble fraction of the cell, whereas in others they may be associated with microsomal and/or mitochondrial fractions (Yang, 1976;Mehendale and Dorough, 1972). …”

Section: Hexose Transferasesmentioning

confidence: 98%

Enzymes Involved in the Metabolism of Plant Allelochemicals

Ahmad

Brattsten

Mullin

et al. 1986

Molecular Aspects of Insect-Plant Associations

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“…In insects, GST plays an important role in biotransformation of various insecticides (Motoyama 1980, Lamoureux andRusness 1987), including the degradation of some organophosphorus compounds (Yang 1976). In addition, GST activity in insects and other animals has also been shown to be induced by a number of chemicals, including pesticides, e.g.…”

Section: Introductionmentioning

confidence: 99%

The effect of environmental parameters on growth, cholinesterase activity and glutathione S-transferase activity in the earthworm (Apporectodea caliginosa)

2000

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The effect of age and environmental parameters on growth, cholinesterase (ChE), and glutathione S-transferase (GST) activities were assessed in juvenile Apporectodea caliginosa earthworms. Earthworms were maintained in three types of soil- loam, sandy, and clay- at a range of moisture contents (15-30%), and temperatures (5-20 C). Earthworm age (1-3 months) had no significant affect on ChE activity. Growth rates were influenced by all environmental parameters tested and these effects were interrelated. Optimum conditions for growth appeared to be in loam or sandy soil with 25-30% moisture at 10-15 C. The GST activity was influenced by soil temperature and activity was significantly higher at 15 C than at 5 C and 10 C. Soil type also influenced GST activity and this influence was dependent on moisture content. In sandy soil GST activity was significantly lower at 30% moisture than at lower moisture contents, in loam soil GST activity was significantly higher at 15% moisture than at higher moisture contents, while in clay soil GST activity was not affected by moisture content. These results indicate that in field experiments when evaluating GST activity soil temperature and soil type need to be consistent between control and 'contaminated sites'. ChE activity was only affected by temperature, so this should be considered when comparing control and treatedareas.

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“…The oxidative reactions take place on the microsomal membranes of the cells, while the other enzymes are located in the cytoplasm. It is noteworthy that, of the various conjugation mechanisms, the glutathione-dependent transferases are the only ones involved in the primary metabolism of insecticides, particularly organophosphorus compounds; many examples are known (Yang, R. 1976). Insecticide metabolism has been extensively reviewed (e.g.…”

Section: Types Of Metabolizing Systemsmentioning

confidence: 99%