Metabolism of Atrazine by Susceptible and Resistant Plants

Negi, Nisha; join(, H. H. Funderburk; Davis, Donald E.

doi:10.2307/4040641

Cited by 31 publications

(12 citation statements)

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“…S ELECTIVE toxicity of a herbicide among different species may be due to several factors including absorption, translocation, and metabolism of the herbicide. Selectiv ity of atrazine and simazine among plants from different families and genera appears to be due to metabolism (2,5,9,10,12,13,19). Absorption and translocation of atra zine and simazine do not correlate with selectivity among species (2,9,13,19).…”

Section: Introductionmentioning

confidence: 96%

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Metabolism of Chloros-Triazine Herbicides byPanicumandSetaria

Thompson

1972

Weed sci.

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SixSetariaspecies and varieties and threePanicumspecies were allowed to absorb14C-labeled 2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine (atrazine), 2-chloro-4,6-bis(isopropylamino)-s-triazine (propazine), and/or 2-chloro-4,6-bis (ethylamino)-s-triazine (simazine). The grasses metabolized the herbicides to water-soluble derivatives. Peptide conjugates were the only major metabolites formed by each species or variety; however, hydroxyderivatives of the herbicides were detected. The order of ability of theSetariaandPanicumspecies and varieties to metabolize atrazine and/or propazine was similar to the order of their tolerance to atrazine and/or propazine. SeveralSetariaandPanicumspecies and varieties formed peptide conjugates of atrazine and/or propazine to which they are resistant, more rapidly than they formed peptide conjugates of simazine, to which they are susceptible.

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Section: Introductionmentioning

confidence: 96%

“…Corn (Zea mays L.) and sorghum (Sorghum bicolor L.) are tolerant to atrazine because they rapidly metabolize it to hydroxyatrazine and/or peptide conjugates (1,2,5,8,9,10,12,14,15,16,17). The intermediate level of tol erance of fall panicum (Panicum dichotomiflorum Michx.)…”

Section: Introductionmentioning

confidence: 99%

Metabolism of Chloros-Triazine Herbicides byPanicumandSetaria

Thompson

1972

Weed sci.

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“…Chloroform (CHILWELL and HUGHES 1962, MAJOR 1962, MONTGOMERY and FREED 1961, carbon tetrachloride (KNUSLI et al 1964), dichloromethane (BENFIELD and CHILWELL 1964, CHILWELL and HUGHES 1962, KNUSLI et al 1964), dioxane (KNUSLI et al 1964), methanol (BENFIELD and CHILWELL 1964, NEGI et al 1964, DELLEY et al 1967, and 8M urea solution have been used. Procedures for carrying out the extractions have used agitation of the soil and solvent for various periods of time at various temperatures and Soxhlet extractions.…”

Section: A) Extraction Proceduresmentioning

confidence: 99%

Single Pesticide Volume: The Triazine Herbicides

Günther¹,

Gunther²

1970

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“…Numerous studies have been conducted with the s-triazine herbicides to determine the basis of their selectivity for different species. Where the amounts of s-triazine herbicides absorbed by resist ant and susceptible species have been compared, little differ ence has been found between the two types of plants in most studies (2,10,12,14). Likewise, most translocation studies with the 5-triazine herbicides have shown them to be readily translocated acropetally by both sensitive and tolerant species 238 (2,9,15,18).…”

Section: Introductionmentioning

confidence: 99%

“…A prominent exception to this generalization is the limited translocation of certain s-triazine herbicides in cotton due to their accumulation in the lysigenous glands (4,5,14,20). A significant correlation has been found between the extent of metabolism and the degree of resistance of many plants to the s-triazine herbicides (3,7,10,11,12,13,16,17).…”

Section: Introductionmentioning

confidence: 99%

Behavior and Fate of Metribuzin in Soybean and Hemp Sesbania

Hargroder

Rogers

1974

Weed sci.

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The absorption, translocation, and metabolism of metribuzin [4-amino-6-tert-butyl-3-(methylthio)-as-triazin-5(4H) one] by soybean (Glycine maxMerr. ‘Lee 68′) and hemp sesbania (Sesbania exaltataL.) grown in nutrient solution and in soil treated with14C-metribuzin were investigated. Absorption studies indicated there were no significant differences in the amount of14C-metribuzin absorbed from treated nutrient solution by soybean (tolerant) and hemp sesbania (susceptible). When these species were grown in14C-metribuzin treated soil, hemp sesbania absorbed appreciably more herbicide than did soybean.14C-metribuzin and (or) its14C-metabolites were translocated from the roots to the shoots of both species. Radioactivity was rapidly translocated and accumulated in all the leaves of hemp sesbania, but it tended to accumulate to the greatest extent in the roots and lower leaves of soybean. Translocation differences between the two species were apparent in plants grown either in soil or nutrient solution treated with14C-metribuzin. However, differences were greatest in plants grown in treated soil. Preliminary metabolic studies indicated that a higher rate of metribuzin degradation occurred in soybean than in hemp sesbania. The major14C-metabolite appeared to be the relatively nonphytotoxic deaminated diketo derivative [6-tert-butyl-1,2,4,-triazine-3-5(2H,4H)dione]. Thus, differences in the absorption, translocation, and metabolism of metribuzin all appeared to contribute to the differential susceptibility of soybean and hemp sesbania to metribuzin.

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Metabolism of Atrazine by Susceptible and Resistant Plants

Cited by 31 publications

References 0 publications

Metabolism of Chloros-Triazine Herbicides byPanicumandSetaria

Metabolism of Chloros-Triazine Herbicides byPanicumandSetaria

Single Pesticide Volume: The Triazine Herbicides

Behavior and Fate of Metribuzin in Soybean and Hemp Sesbania

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