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 | Acceso al texto completo restringido a Biblioteca INIA Treinta y Tres. Por información adicional contacte bibliott@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha : |
15/09/2014 |
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Actualizado : |
11/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
YASOUR, H.; OSUNA, M.D.; ORTIZ, A.; ECKERT, J.W.; FISHER, A.J.; SALDAIN, N. |
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Afiliación : |
NESTOR ELIO SALDAIN CROCCE, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
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Título : |
Mechanism of resistance to penoxsulam in late watergrass [Echinochloa phyllopogon (stapf) koss.]. |
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Fecha de publicación : |
2009 |
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Fuente / Imprenta : |
Journal of Agricultural and Food Chemistry, 2009, v. 57. n. 9, p. 3653-3660. |
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ISSN : |
0021-8561 |
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DOI : |
10.1021/jf8039999 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received for Review December 23, 2008 // Accepted March 11, 2009 // Revised manuscript received March 9, 2009.
DOI: https://doi.org/10.1021/jf8039999 |
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Contenido : |
Abstract
Late watergrass [Echinochloa phyllopogon (Stapf.) Koss.] is a major weed of California rice that has evolved P450-mediated metabolic resistance to multiple herbicides. Resistant (R) populations are also poorly controlled by the recently introduced herbicide penoxsulam. Ratios (R/S) of the R to susceptible (S) GR50 (herbicide rate for 50% growth reduction) ranged from 5 to 9. Although specific acetolactate synthase (ALS) activity was 1.7 higher in R than in S plants, the enzyme in R plants was about 6 times more susceptible to the herbicide. R plants exhibited faster (2.8 times) oxidative [14C]-penoxsulam metabolism than S plants 24 h after treatment. Addition of malathion (P450 inhibitor) enhanced herbicide phytotoxicity and reduced penoxsulam metabolism in R plants. Tank mixtures with thiobencarb (can induce P450) antagonized penoxsulam toxicity in R plants, suggesting penoxsulam may be broken down by a thiobencarb-inducible enzyme. These results suggest E. phyllopogon resistance to penoxsulam is mostly due to enhanced herbicide metabolism, possibly via P450 monooxidation. |
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Thesagro : |
ARROZ; ARROZ IRRIGADO; ECHINOCHLOA PHYLLOPOGON; ESCARDA; HERBICIDAS; PENOXSULAN. |
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Asunto categoría : |
H60 Malezas y escardas |
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Marc : |
LEADER 02075naa a2200289 a 4500
001 1050250
005 2019-10-11
008 2009 bl uuuu u00u1 u #d
022 $a0021-8561
024 7 $a10.1021/jf8039999$2DOI
100 1 $aYASOUR, H.
245 $aMechanism of resistance to penoxsulam in late watergrass [Echinochloa phyllopogon (stapf) koss.].$h[electronic resource]
260 $c2009
500 $aArticle history: Received for Review December 23, 2008 // Accepted March 11, 2009 // Revised manuscript received March 9, 2009. DOI: https://doi.org/10.1021/jf8039999
520 $aAbstract Late watergrass [Echinochloa phyllopogon (Stapf.) Koss.] is a major weed of California rice that has evolved P450-mediated metabolic resistance to multiple herbicides. Resistant (R) populations are also poorly controlled by the recently introduced herbicide penoxsulam. Ratios (R/S) of the R to susceptible (S) GR50 (herbicide rate for 50% growth reduction) ranged from 5 to 9. Although specific acetolactate synthase (ALS) activity was 1.7 higher in R than in S plants, the enzyme in R plants was about 6 times more susceptible to the herbicide. R plants exhibited faster (2.8 times) oxidative [14C]-penoxsulam metabolism than S plants 24 h after treatment. Addition of malathion (P450 inhibitor) enhanced herbicide phytotoxicity and reduced penoxsulam metabolism in R plants. Tank mixtures with thiobencarb (can induce P450) antagonized penoxsulam toxicity in R plants, suggesting penoxsulam may be broken down by a thiobencarb-inducible enzyme. These results suggest E. phyllopogon resistance to penoxsulam is mostly due to enhanced herbicide metabolism, possibly via P450 monooxidation.
650 $aARROZ
650 $aARROZ IRRIGADO
650 $aECHINOCHLOA PHYLLOPOGON
650 $aESCARDA
650 $aHERBICIDAS
650 $aPENOXSULAN
700 1 $aOSUNA, M.D.
700 1 $aORTIZ, A.
700 1 $aECKERT, J.W.
700 1 $aFISHER, A.J.
700 1 $aSALDAIN, N.
773 $tJournal of Agricultural and Food Chemistry, 2009$gv. 57. n. 9, p. 3653-3660.
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Registro original : |
INIA Treinta y Tres (TT) |
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| Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
10/07/2019 |
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Actualizado : |
25/01/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
BESIL, N.; PÉREZ-PARADA, A.; BOLOGNA, F.; CESIO, M.V.; RIVAS, F.; HEINZEN, H. |
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Afiliación : |
NATALIA BESIL, Grupo de Análisis de Compuestos Traza, Departamento de Química del Litoral, Facultad de Química, CENUR Litoral Norte, Universidad de la República UdelaR, Paysandú, Uruguay; ANDRÉS PÉREZ-PARADA, Grupo de Análisis de Compuestos Traza, Departamento de Química del Litoral, Facultad de Química, CENUR Litoral Norte, Universidad de la República UdelaR, Paysandú, Uruguay;Dpto de Desarrollo Tecnológico – DDT, Centro Universitario Regional del Este, Rocha; FRANCO DAMIAN BOLOGNA FERNANDEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARÍA VERÓNICA CESIO, Grupo de Análisis de Compuestos Traza, Cátedra de Farmacognosia y Productos Naturales, Departamento de Química Orgánica, Facultad de Química, Universidad de la República UdelaR, Montevideo, Uruguay.; CARLOS FERNANDO RIVAS GRELA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; HORACIO HEINZEN, Grupo de Análisis de Compuestos Traza, Departamento de Química del Litoral, Facultad de Química, CENUR Litoral Norte, Universidad de la República UdelaR, Paysandú, Uruguay. |
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Título : |
Dissipation of selected insecticides and fungicides applied during pre-harvest on mandarin and orange trees in Uruguay. |
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Fecha de publicación : |
2019 |
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Fuente / Imprenta : |
Scientia Horticulturae, 5 April 2019, Volume 248, Pages 34-40. |
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ISSN : |
0304-4238 |
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DOI : |
10.1016/j.scienta.2018.12.053 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 4 October 2018 / Revised 28 December 2018 / Accepted 29 December 2018 / Available online 9 January 2019.
Funding sources: Financial support from Instituto Nacional de Investigación Agropecuaria Uruguay, (L2_12_1_VI_CT_GT4_7639 project). N. Besil is grateful to Agencia Nacional de Investigación e Innovación, Uruguay, for her scholarship POS_NAC_2012_1_9348. |
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Contenido : |
ABSTRACT.
The dissipation of 4 commercial pre-harvest pesticides used in two Citrus species under field conditions is presented. The influence of agroecological region, the Citrus species and weather conditions on abamectin, spinosad, imidacloprid and difenoconazole dissipation rate on fruits were evaluated. A validated ethyl acetate method coupled to liquid chromatography-tandem mass spectrometry allowed the determination of pesticide residues having recoveries of 72?115%, relative standard deviations ≤16% and quantification limits below the international Maximum Residue Levels (MRLs). After 35?40 days from pesticides spraying, all residues were below the international required MRL. For each citrus species, the influence of the agroecological region on the pesticide dissipation was assessed. Film-protected fruits against direct radiation and rain showed higher residue levels of imidacloprid and spinosad than the non-protected ones. Either for orange or mandarin, abamectin residues were detectable only at the first day after application. These findings provide useful information to state safer pre harvest intervals and to ensure food safety and compliance with good agricultural practices.
© 2019 Elsevier B.V. All rights reserved. |
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Palabras claves : |
CITRUS FRUITS; LC-MS/MS; PESTICIDE RESIDUES; PRE-HARVEST DISSIPATION. |
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Thesagro : |
CITRUS. |
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Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 02458naa a2200277 a 4500
001 1059940
005 2019-01-25
008 2019 bl uuuu u00u1 u #d
022 $a0304-4238
024 7 $a10.1016/j.scienta.2018.12.053$2DOI
100 1 $aBESIL, N.
245 $aDissipation of selected insecticides and fungicides applied during pre-harvest on mandarin and orange trees in Uruguay.$h[electronic resource]
260 $c2019
500 $aArticle history: Received 4 October 2018 / Revised 28 December 2018 / Accepted 29 December 2018 / Available online 9 January 2019. Funding sources: Financial support from Instituto Nacional de Investigación Agropecuaria Uruguay, (L2_12_1_VI_CT_GT4_7639 project). N. Besil is grateful to Agencia Nacional de Investigación e Innovación, Uruguay, for her scholarship POS_NAC_2012_1_9348.
520 $aABSTRACT. The dissipation of 4 commercial pre-harvest pesticides used in two Citrus species under field conditions is presented. The influence of agroecological region, the Citrus species and weather conditions on abamectin, spinosad, imidacloprid and difenoconazole dissipation rate on fruits were evaluated. A validated ethyl acetate method coupled to liquid chromatography-tandem mass spectrometry allowed the determination of pesticide residues having recoveries of 72?115%, relative standard deviations ≤16% and quantification limits below the international Maximum Residue Levels (MRLs). After 35?40 days from pesticides spraying, all residues were below the international required MRL. For each citrus species, the influence of the agroecological region on the pesticide dissipation was assessed. Film-protected fruits against direct radiation and rain showed higher residue levels of imidacloprid and spinosad than the non-protected ones. Either for orange or mandarin, abamectin residues were detectable only at the first day after application. These findings provide useful information to state safer pre harvest intervals and to ensure food safety and compliance with good agricultural practices. © 2019 Elsevier B.V. All rights reserved.
650 $aCITRUS
653 $aCITRUS FRUITS
653 $aLC-MS/MS
653 $aPESTICIDE RESIDUES
653 $aPRE-HARVEST DISSIPATION
700 1 $aPÉREZ-PARADA, A.
700 1 $aBOLOGNA, F.
700 1 $aCESIO, M.V.
700 1 $aRIVAS, F.
700 1 $aHEINZEN, H.
773 $tScientia Horticulturae, 5 April 2019, Volume 248, Pages 34-40.
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