Surfactant-Increased Glyphosate Uptake into Plasma Membrane Vesicles Isolated from Common Lambsquarters Leaves

Riechers, Dean E.; Wax, Loyd M.; Liebl, Rex A.; Bush, Daniel R.

doi:10.1104/pp.105.4.1419

Cited by 42 publications

(28 citation statements)

References 19 publications

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“…Riechers and his co-workers found that MON 0818, a cationic surfactant used in commercial formulations of herbicide, acted directly on the plasma membrane to increase glyphosate uptake. [39] Therefore, Rufli opposed use of adjuvants in test concentration as they might increase bioavailability in toxicity test of chemicals with sparingly solubility. [40] As the combination of pesticides can be additive, synergistic, or antagonistic, [41] the joint toxicity of the combination of pesticide and adjuvants also exists.…”

Section: Change In Mirna Expression Caused By Adjuvantsmentioning

confidence: 99%

Effect of triazophos, fipronil and their mixture on miRNA expression in adult zebrafish

Wang

Zhou

Ding

et al. 2010

Journal of Environmental Science and Health, Part B

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MicroRNA (miRNA) plays a crucial role in gene expression regulation. However, no data are available on change of miRNA expression of zebrafish (Danio rerio) after treatment with pesticides. We evaluated the effect of fipronil (5-amino-1-[2, 6-dichloro-4-(trifluoromethyl) phenyl]-4-[(trifluoromethyl) sulfinyl]-1H-pyrazole-3-carbonitrile) and triazophos (3-(O, O-diethyl)-1-phenyl thiophosphoryl-1, 2, 4-triazol) and their mixture on miRNA expression in zebrafish.MiRNA expression profiles in zebrafish were altered after treatment with these chemicals. An association between these chemicals and the expression of 21 miRNAs was found 96 h after treatment. Among them, 14 miRNAs were differentially expressed due to the treatments with fipronil, triazophos and their mixture; 5 miRNAs showed altered expression level after treatment with formulations of these chemicals; miR-29b and miR-738 were differentially expressed after treatment with adjuvants. MiRNAs might present a novel toxicological response that could be used as a toxicological biomarker and have a different direction for future investigations of their association with miRNAs involved in chemical related diseases.

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Section: Change In Mirna Expression Caused By Adjuvantsmentioning

confidence: 99%

Effect of triazophos, fipronil and their mixture on miRNA expression in adult zebrafish

Wang

Zhou

Ding

et al. 2010

Journal of Environmental Science and Health, Part B

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“…These workers reported that absorption of radioactive MON 0818 was rapid during the first 6 h and reached a maximum by 24 h; less than 3% of the radioactivity was recovered from the ECW of the treated leaves 13. Riechers et al 14 confirmed that MON 0818 molecules possess the ability to diffuse away from the leaf cuticle into the apoplastic space, where they act directly on the plasma membrane to increase uptake of glyphosate.…”

Section: Introductionmentioning

confidence: 97%

Absorption, localisation, translocation and activity of glyphosate in barnyardgrass (Echinochloa crus-galli (L) Beauv): influence of herbicide and surfactant concentration

Kirkwood¹,

Hetherington²,

Reynolds

et al. 2000

Pest Manag. Sci.

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“…Stock & Holloway (1993) afirmaram que os surfatantes, além de melhorarem a deposição e retenção do herbicida, podem penetrar na cutícula, às vezes rapidamente, para atingir outros lugares de ação, como a membrana celular, aumentando sua permeabilidade em baixas concentrações ou danifica ndo-a em maiores concentrações. Riechers et al (1994) observaram que a eficácia dos surfatantes para incrementar a absorção do glyphosate depende da habilidade de se difundir através da cutícula para chegar ao apoplasto e atuar diretamente na membrana celular com a proteína ou com os lipídeos, aumentando sua permeabilidade.…”

Section: Introductionunclassified

Avaliação de formulações de glyphosate sobre soja Roundup Ready

et al. 2007

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RESUMO -Avaliou-se neste trabalho o efeito da aplicação de três marcas comerciais de glyphosate -Roundup Ready® e R. Transorb®, formuladas à base do sal de isopropilamina, e Zapp Qi®, à base do sal potássico -sobre a soja transgênica (variedade CD 219RR), tolerante a esse herbicida . Aos 25 dias após a emergência, quando as plantas apresentavam o segundo trifólio completamente expandido (estádios V 2 -V 3 ), foram aplicadas formulações do glyphosate na dose de 2.000 g ha -1. Avaliou-se a intoxicação das plantas aos 15 dias após a aplicação do herbicida, o número e massa seca de folíolos, o número de nódulos radiculares e o teor foliar de N, P, K, S, Ca, Mg, Fe, Cu, Zn e Mn, por ocasião do florescimento (59 dias após a emergência -DAE), e o rendimento de grãos ao final do ciclo (127 DAE). A partir de amostras de solo, também coletadas na etapa de florescimento da soja, avaliou-se a taxa de respiração basal do solo, o carbono da biomassa microbiana e quociente metabólico. O Roundup Transorb, formulado à base do sal de isopropilamina, foi mais prejudicial às plantas de soja RG, reduzindo o número de nódulos radiculares e o rendimento de grãos, além de promover maior efeito negativo sobre a microbiota do solo. Roundup Ready, à base do mesmo sal isopropilamina, não deve ser aplicado na soja RG em doses elevadas, haja visto ser capaz de alterar o teor de alguns nutrientes nas folhas da cultura, entre eles N, Ca, Mg, Fe e Cu, além de causar intoxicação nas plantas.Palavras-chave: herbicidas, seletividade, soja transgênica, inibidores da EPSPs. N, P, K, S, Ca, Mg, Fe, Cu, Zn, and Mn at flowering and grain yield ABSTRACT -This study aimed to evaluate the effects of three glyphosate formulations (Roundup

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Surfactant-Increased Glyphosate Uptake into Plasma Membrane Vesicles Isolated from Common Lambsquarters Leaves

Cited by 42 publications

References 19 publications

Effect of triazophos, fipronil and their mixture on miRNA expression in adult zebrafish

Effect of triazophos, fipronil and their mixture on miRNA expression in adult zebrafish

Absorption, localisation, translocation and activity of glyphosate in barnyardgrass (Echinochloa crus-galli (L) Beauv): influence of herbicide and surfactant concentration

Avaliação de formulações de glyphosate sobre soja Roundup Ready

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