Response of Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) to sublethal treatments with phosphine

Hobbs, S.K.; Bond, E.J.

doi:10.1016/0022-474x(89)90035-0

Cited by 23 publications

(22 citation statements)

References 26 publications

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“…Thèse results indicate that phosphine is a respiration inhibitor (Bond et al 1969;Chefurka et al 1976;Hobbs and Bond 1989;Nakakita 1976;Nakakita et al 1971;Price 1980). The mode of action of this gas has been further explained by its inhibition of mitochondrial activity from rat liver (Nakakita et al 1971) and insects (Chefurka et al 1976;Price 1980).…”

Section: Discussionmentioning

confidence: 99%

“…There are many reports about inhibition of catalase of insects by phosphine (Hobbs and Bond 1989;Price eta/.1982). Thèse papers show that catalase both in vivo and in vitro was inhibited and the inhibition rate of in vivo catalase was higher than that of in vitro catalase.…”

Section: Discussionmentioning

confidence: 99%

“…To aid the dissolving of the gas, stirring was done for 30 min for every 1 h until 3 h or 6 h at 25 ± 1°C. This method maintained 120 to 200 mg L" 1 phosphine concentration in the extract solution (Hobbs and Bond 1989). Similar extracts that were not treated with phosphine served as controls.…”

Section: Testing Of Enzyme Activitymentioning

confidence: 99%

“…Mites were homogenized immediately using a Polytron homogenizer (Brinkmann Instruments, Westbury, N.J.) with a PT-10 generator (1 cm diam) at approximately 13 000 rpm (Hobbs and Bond 1989). The supernatant was filtered through Whatman No.…”

Section: Testing Of Enzyme Activitymentioning

confidence: 99%

“…The main toxic action of phosphine on insects is as a respiratory inhibitor (Bond et al 1969;Chefurka et al 1976;Hobbs and Bond 1989;Nakakita 1976;Nakakita et al 1971;Price 1980). In studies on stored-product beetles, inhibitory effects of the gas on in vitro cytochrome C oxidase was found; however, no effects on this enzyme were detected in susceptible or résistant insects after phosphine treatment in vivo (Price and Dance 1983).…”

Section: Introductionmentioning

confidence: 99%

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Toxic action of phosphine on the adults of copra mite Tyrophagus putrescentiae [Astigmata : Acaridae]

Jian¹,

Jayas²,

White³

2005

phyto

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The inhibitory effects of phosphine gas on cytochrome C oxidase and catalase, both in vivo and in vitro, and gas uptake by adults of Tyrophagus putrescentiae were determined. The activities of both enzymes were reduced by the gas. Relative inhibition rates of the enzymes were : in vivo catalase > in vitro catalase, in vivo cytochrome C oxidase < in vitro cytochrome C oxidase, and the inhibition effects of in vitro enzymes were proportional to the exposure period of phosphine applied to the cytosolic extracts. Although the uptake of phosphine by adults increased with an increase of phosphine concentration and exposure period, the rate of uptake was relatively slower than at low concentration and short exposure period. The absorption mechanism of phosphine between insects and mites appears to be different.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Testing Of Enzyme Activitymentioning

confidence: 99%

Section: Testing Of Enzyme Activitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Toxic action of phosphine on the adults of copra mite Tyrophagus putrescentiae [Astigmata : Acaridae]

Jian¹,

Jayas²,

White³

2005

phyto

View full text Add to dashboard Cite

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Review A Review of the Mechanisms Involved in the Action of Phosphine as an Insecticide and Phosphine Resistance in Stored‐Product Insects

Chaudhry¹

1997

Pestic. Sci.

178

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Phosphine gas has been used world‐wide for more than four decades as an ideal fumigant for disinfestation of stored grains and other commodities. Its use as a safe fumigant of stored products has become even more important with recent restrictions on the production of the only alternative, methyl bromide. Widespread resistance to phosphine has emerged in several species of stored‐product insects in many countries, which in some instances may have caused control failures. Chemically, phosphine is a strong reducing agent and biological redox systems, especially the components of the mitochondrial electron transport chain, are probably the site of its action in insects. The oxidation of phosphine could produce reactive phosphorylating species and interactions of phosphine with biological redox systems have been reported to cause generation of highly reactive oxyradicals. This appears to be the basis of phosphine toxicity to insects, which differs from that of respiratory inhibitors such as hydrogen cyanide. Phosphine‐resistant strains of several species of stored‐product insects have been reported to absorb very small amounts of the compound compared to their susceptible counterparts. This reduced uptake in resistant insects appears to result from respiratory exclusion of phosphine. The overall mechanism of resistance also involves a detoxification process. Despite the likely involvement of oxyradicals in the insecticidal action of phosphine, the level of anti‐oxidant enzymes in resistant insects is apparently not higher than that in their susceptible counterparts. The reduced uptake of the compound might be due either to the presence of a phosphine insensitive target site or to a membrane‐based efflux system that excludes phosphine gas in resistant insects. Studies have indicated the oxygen uptake in mitochondrial preparations from susceptible and resistant insects to be equally sensitive to inhibition by phosphine in vitro. The nature of the phosphine‐exclusion system in resistant insects has not been fully elucidated. The possibilities of controlling resistant insects with phosphine and prospects for developing new alternative fumigants are also discussed. © 1997 SCI.

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Review A Review of the Mechanisms Involved in the Action of Phosphine as an Insecticide and Phosphine Resistance in Stored‐Product Insects

Chaudhry¹

1997

Pestic. Sci.

View full text Add to dashboard Cite

: Phosphine gas has been used world-wide for more than four decades as an ideal fumigant for disinfestation of stored grains and other commodities. Its use as a safe fumigant of stored products has become even more important with recent restrictions on the production of the only alternative, methyl bromide. Widespread resistance to phosphine has emerged in several species of storedproduct insects in many countries, which in some instances may have caused control failures.Chemically, phosphine is a strong reducing agent and biological redox systems, especially the components of the mitochondrial electron transport chain, are probably the site of its action in insects. The oxidation of phosphine could produce reactive phosphorylating species and interactions of phosphine with biological redox systems have been reported to cause generation of highly reactive oxyradicals. This appears to be the basis of phosphine toxicity to insects, which di †ers from that of respiratory inhibitors such as hydrogen cyanide.Phosphine-resistant strains of several species of stored-product insects have been reported to absorb very small amounts of the compound compared to their susceptible counterparts. This reduced uptake in resistant insects appears to result from respiratory exclusion of phosphine. The overall mechanism of resistance also involves a detoxiÐcation process. Despite the likely involvement of oxyradicals in the insecticidal action of phosphine, the level of anti-oxidant enzymes in resistant insects is apparently not higher than that in their susceptible counterparts. The reduced uptake of the compound might be due either to the presence of a phosphine insensitive target site or to a membrane-based efflux system that excludes phosphine gas in resistant insects. Studies have indicated the oxygen uptake in mitochondrial preparations from susceptible and resistant insects to be equally sensitive to inhibition by phosphine in vitro. The nature of the phosphine-exclusion system in resistant insects has not been fully elucidated.The possibilities of controlling resistant insects with phosphine and prospects for developing new alternative fumigants are also discussed.

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Response of Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) to sublethal treatments with phosphine

Cited by 23 publications

References 26 publications

Toxic action of phosphine on the adults of copra mite Tyrophagus putrescentiae [Astigmata : Acaridae]

Toxic action of phosphine on the adults of copra mite Tyrophagus putrescentiae [Astigmata : Acaridae]

Review A Review of the Mechanisms Involved in the Action of Phosphine as an Insecticide and Phosphine Resistance in Stored‐Product Insects

Review A Review of the Mechanisms Involved in the Action of Phosphine as an Insecticide and Phosphine Resistance in Stored‐Product Insects

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