The Effect of Insecticides on the Selectivity of Propanil on Rice

Bowling, C. C.; Hudgins, H. R.

doi:10.2307/4041135

Cited by 53 publications

(35 citation statements)

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“…Certain organophosphate insecticides have demonstrated inhibitory effects on specific P450 enzymes involved in herbicide detoxification pathways, causing a synergistic interaction between the organophosphate insecticide and the herbicide and leading to greater levels of phytotoxicity in crop plants such as rice, maize and wheat and grass weeds such as E. phyllopogon or L. rigidum . Organophosphate insecticides are highly reactive and chemically diverse molecules that possess a phosphorous atom with a covalent bond to either sulphur or oxygen.…”

Section: Introductionmentioning

confidence: 99%

Phorate can reverse P450 metabolism-based herbicide resistance inLolium rigidum

2016

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We report the selective reversal of P450-mediated metabolic multiple resistance to chlorsulfuron and trifluralin in the grass weed L. rigidum by synergistic interaction with the insecticide phorate, and discuss the putative mechanistic basis. This research should encourage diversity in herbicide use patterns for weed control as part of a long-term integrated management effort to reduce the risk of selection of metabolism-based multiple herbicide resistance in L. rigidum. © 2016 Society of Chemical Industry.

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Section: Introductionmentioning

confidence: 99%

Phorate can reverse P450 metabolism-based herbicide resistance inLolium rigidum

2016

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“…Attempts to improve efficacy of propanil have included the use of carbamate and organophosphorus insecticides as synergists12h14 since these compounds are known to inhibit aryl acylamidase activity15 thereby enhancing the phytotoxicity of propanil by reducing its metabolism. 3,4,16,17 However, tolerance to propanil in E. colona increases with plant age, possibly due to an observed decrease in uptake of this herbicide. 18 Consequently, selective phytotoxicity of propanil based upon di †erences in aryl acylamidase-mediated metabolism is progressively reduced with plant age, suggesting that even propanilÈ insecticide mixtures would have limited use in the control of older E. colona plants.…”

Section: Introductionmentioning

confidence: 99%

Effect of Mono-oxygenase Inhibitors on Uptake, Metabolism and Phytotoxicity of Propanil in Resistant Biotypes of Jungle-Rice,Echinochloa Colona

et al. 1997

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: The e †ect of the mono-oxygenase inhibitors tridiphane, piperonyl butoxide and prochloraz on propanil uptake, metabolism and phytotoxicity was measured in a resistant (R) biotype of Echinochloa colona. The uptake of propanil was not signiÐcantly a †ected by any of the three mono-oxygenase inhibitors. The Ðrst metabolite of propanil metabolism, 3,4-dichloroaniline, was found to accumulate to higher levels in E. colona treated with each of the mono-oxygenase inhibitors mixed with formulated propanil, compared to propanil applied alone.Accumulation of further metabolites of propanil (glucosyl-3,4-dichloroaniline and bound products) was reduced in the presence of mono-oxygenase inhibitors, compared with propanil application alone. Leaf damage caused by a single drop of propanil compared to propanil ] mono-oxygenase inhibitor was used to assess the degree of propanil tolerance in E. colona biotypes. Leaf damage was signiÐcantly greater in propanil ] mono-oxygenase inhibitor treatments. No leaf damage was observed in mono-oxygenase inhibitor treatments alone at the concentrations used.Peroxidase activity was measured in crude extracts of the R-biotype of E. colona using 3,4-dichloroaniline as substrate, in the presence and absence of mono-oxygenase inhibitors and the speciÐc peroxidase inhibitor salicylhydroxamic acid. Peroxidase activity was inhibited by all three monooxygenase inhibitors at 10 kM and by salicylhydroxamic acid at 1 kM. Glucosyl-3,4-dichloroaniline was found not to be a substrate for peroxidase activity.These results suggest that the incorporation of 3,4-dichloroaniline into bound residues involves peroxidase activity which can be inhibited by mono-oxygenase inhibitors. When peroxidase activity is inhibited, the precursor metabolite 3,4-dichloroaniline accumulates, and propanil resistance in E. colona is reduced, possibly as a consequence of phytotoxicity of this metabolite and/or product inhibition of the Ðrst step in propanil metabolism, responsible for the formation of 3,4-dichloroaniline. Glasshouse trials have demonstrated that the application of mono-oxygenase inhibitors, (particularly tridiphane which is also known to inhibit glutathione transferase activity) with propanil o †ers a promising approach to the control of propanil resistant biotypes of Jungle-Rice.

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“…Swanson and Swanson (1968) found that certain carbamate insecticides inhibited the degradation of monuron in cotton leaf discs and thus enhanced the inhibition of photosynthesis by monuron in the leaf tissue. Similar interactions have been found to exist with the herbicide propanil and certain phosphate or carbamate insecticides in rice plants (Bowling and Hudgins, 1966). Matsunaka (1968) and Yih et a/.…”

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confidence: 81%

Insecticide inhibition of herbicide metabolism in leaf tissues

Chang¹,

Smith²,

Stephenson³

1971

J. Agric. Food Chem.

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The effects of eight insecticides on the metabolism of nine herbicides were investigated in isolated leaf tissues of plants, About half of the 72 herbicideinsecticide combinations showed some degree of interaction. The metabolism of 3,6-dichloro-oanisic acid (dicamba), isopropyl m-chlorocarbanilate (chlorpropham), and 3-(3,4-dichloropheny1)-1-methoxy-1-methylurea (linuron) in wheat, bean, and plantain, respectively, was commonly inhibited by organophosphate insecticides. 3',4'-Dichloropropionanilide (propanil) metabolism in tomato was strongly inhibited by all the insecticides examined, especially the carbamates. The metabolism of 5-amino-4-chloro-2-phenyl-3(2H)-pyridazinone (pyrazon) in red beet and N-(1,l-dimethylpropyny1)-3,5-dichlorobenzamide (Kerb) in lettuce was inhibited by some of the carbamates and some of the organophosphates. No insecticides significantly inhibited the metabolism of 3-amino-2,5-dichlorobenzoic acid (chloramben), 3-amino-s-triazole (amitrole), or 4-(2,4-dichlorophenoxy)butyric acid (2,4-DB) in bean. everal interactions have been noted for pesticide combinations (Kaufman et a/., 1970). Hacskaylo et a/.

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The Effect of Insecticides on the Selectivity of Propanil on Rice

Cited by 53 publications

References 0 publications

Phorate can reverse P450 metabolism-based herbicide resistance inLolium rigidum

Phorate can reverse P450 metabolism-based herbicide resistance inLolium rigidum

Effect of Mono-oxygenase Inhibitors on Uptake, Metabolism and Phytotoxicity of Propanil in Resistant Biotypes of Jungle-Rice,Echinochloa Colona

Insecticide inhibition of herbicide metabolism in leaf tissues

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