| |
|
|
|
Registro completo
|
|
Biblioteca (s) : |
INIA Las Brujas. |
|
Fecha : |
06/06/2019 |
|
Actualizado : |
06/06/2019 |
|
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
|
Autor : |
BESIL, N.; CESIO, V.; LUQUE, E.; PINTOS, P.; RIVAS, F.; HEINZEN, H. |
|
Afiliación : |
NATALIA BESIL, Universidad de la República (UdelaR)/ Facultad de Química; VERÓNICA CESIO, Universidad de la República (UdelaR)/ Facultad de Química; MAYZA ELEANA LUQUE NUÑEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; PEDRO MAXIMILIANO PINTOS RODRIGUEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CARLOS FERNANDO RIVAS GRELA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; HORACIO HEINZEN, Universidad de la República (UdelaR)/ Facultad de Química. |
|
Título : |
Dissipation of pre-harvest pesticides on "Clementine" mandarins after open field application, and their persistence when stored under conventional postharvest conditions. |
|
Fecha de publicación : |
2018 |
|
Fuente / Imprenta : |
Horticulturae. 2018, vol.4, Issue 4:55. |
|
DOI : |
10.3390/horticulturae4040055 |
|
Idioma : |
Inglés |
|
Notas : |
Article history: Received: 13 October 2018 / Revised: 11 December 2018 / Accepted: 12 December 2018 / Published: 18 December 2018.
This article belongs to the Special Issue Postharvest Disease Development: Pre and/or Postharvest Practices. |
|
Contenido : |
ABSTRACT.
The dissipation of field-applied difenoconazole, imidacloprid, pyraclostrobin and spinosad on Clementine mandarins (Citrus clementina Hort. ex Tan.) under controlled conditions throughout the citrus production chain was assessed. At harvest, 42 days after application, the dissipation of these pesticides were 80, 92, and 48% for difenoconazole, imidacloprid, pyraclostrobin, respectively, and spinosad was below the level of detectability. At day 28 after application, spinosad was no longer detected. The model equations that best describe the dissipation curves of these pesticides on Clementine mandarins showed different patterns. Their half-life on Clementine, calculated by the best-fitted experimental data, were 19.2 day (1st-order model) for difenoconazole, 4.1 day (Root Factor (RF) 1st-order model) for imidacloprid, 39.8 day (2nd-order model) for pyraclostrobin and 5.8 day (1st-order model) for spinosad. These results are the first record of pyraclostrobin persistence on mandarins, showing a longer half-life in this matrix than those reported for any other fruit. The treated fruit were harvested and submitted to the usual postharvest treatments: first, a hypochlorite drenching was performed; as a second step, imazalil and wax were applied, and then the mandarins were stored at 4 °C. After 32 days, cold storage caused no significant effects on the residue levels of the four pesticides compared with those determined on freshly harvested mandarins. All residues were below their Codex and European Union (EU) maximum residue limit (MRL) for mandarin since the spray application day. MenosABSTRACT.
The dissipation of field-applied difenoconazole, imidacloprid, pyraclostrobin and spinosad on Clementine mandarins (Citrus clementina Hort. ex Tan.) under controlled conditions throughout the citrus production chain was assessed. At harvest, 42 days after application, the dissipation of these pesticides were 80, 92, and 48% for difenoconazole, imidacloprid, pyraclostrobin, respectively, and spinosad was below the level of detectability. At day 28 after application, spinosad was no longer detected. The model equations that best describe the dissipation curves of these pesticides on Clementine mandarins showed different patterns. Their half-life on Clementine, calculated by the best-fitted experimental data, were 19.2 day (1st-order model) for difenoconazole, 4.1 day (Root Factor (RF) 1st-order model) for imidacloprid, 39.8 day (2nd-order model) for pyraclostrobin and 5.8 day (1st-order model) for spinosad. These results are the first record of pyraclostrobin persistence on mandarins, showing a longer half-life in this matrix than those reported for any other fruit. The treated fruit were harvested and submitted to the usual postharvest treatments: first, a hypochlorite drenching was performed; as a second step, imazalil and wax were applied, and then the mandarins were stored at 4 °C. After 32 days, cold storage caused no significant effects on the residue levels of the four pesticides compared with those determined on freshly harvested mandarins. All residues were ... Presentar Todo |
|
Palabras claves : |
DEGRADATION DYNAMIC; LC-MS/MS; PESTICIDE RESIDUES. |
|
Thesagro : |
CITRUS. |
|
Asunto categoría : |
F01 Cultivo |
|
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/12791/1/horticulturae-04-00055.pdf
https://www.mdpi.com/2311-7524/4/4/55
|
|
Marc : |
LEADER 02625naa a2200253 a 4500
001 1059829
005 2019-06-06
008 2018 bl uuuu u00u1 u #d
024 7 $a10.3390/horticulturae4040055$2DOI
100 1 $aBESIL, N.
245 $aDissipation of pre-harvest pesticides on "Clementine" mandarins after open field application, and their persistence when stored under conventional postharvest conditions.$h[electronic resource]
260 $c2018
500 $aArticle history: Received: 13 October 2018 / Revised: 11 December 2018 / Accepted: 12 December 2018 / Published: 18 December 2018. This article belongs to the Special Issue Postharvest Disease Development: Pre and/or Postharvest Practices.
520 $aABSTRACT. The dissipation of field-applied difenoconazole, imidacloprid, pyraclostrobin and spinosad on Clementine mandarins (Citrus clementina Hort. ex Tan.) under controlled conditions throughout the citrus production chain was assessed. At harvest, 42 days after application, the dissipation of these pesticides were 80, 92, and 48% for difenoconazole, imidacloprid, pyraclostrobin, respectively, and spinosad was below the level of detectability. At day 28 after application, spinosad was no longer detected. The model equations that best describe the dissipation curves of these pesticides on Clementine mandarins showed different patterns. Their half-life on Clementine, calculated by the best-fitted experimental data, were 19.2 day (1st-order model) for difenoconazole, 4.1 day (Root Factor (RF) 1st-order model) for imidacloprid, 39.8 day (2nd-order model) for pyraclostrobin and 5.8 day (1st-order model) for spinosad. These results are the first record of pyraclostrobin persistence on mandarins, showing a longer half-life in this matrix than those reported for any other fruit. The treated fruit were harvested and submitted to the usual postharvest treatments: first, a hypochlorite drenching was performed; as a second step, imazalil and wax were applied, and then the mandarins were stored at 4 °C. After 32 days, cold storage caused no significant effects on the residue levels of the four pesticides compared with those determined on freshly harvested mandarins. All residues were below their Codex and European Union (EU) maximum residue limit (MRL) for mandarin since the spray application day.
650 $aCITRUS
653 $aDEGRADATION DYNAMIC
653 $aLC-MS/MS
653 $aPESTICIDE RESIDUES
700 1 $aCESIO, V.
700 1 $aLUQUE, E.
700 1 $aPINTOS, P.
700 1 $aRIVAS, F.
700 1 $aHEINZEN, H.
773 $tHorticulturae. 2018, vol.4, Issue 4:55.
Descargar
Esconder MarcPresentar Marc Completo |
|
Registro original : |
INIA Las Brujas (LB) |
|
|
Biblioteca
|
Identificación
|
Origen
|
Tipo / Formato
|
Clasificación
|
Cutter
|
Registro
|
Volumen
|
Estado
|
Volver
|
|
|
 | Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
|
Registro completo
|
|
Biblioteca (s) : |
INIA Las Brujas. |
|
Fecha actual : |
30/06/2023 |
|
Actualizado : |
30/06/2023 |
|
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
|
Circulación / Nivel : |
Internacional - -- |
|
Autor : |
GIANNITTI, F.; GARCÍA, J. P.; ADAMS, V.; ARMENDANO, J.; BEINGESSER, J.; ROOD, J.; UZAL, F. A. |
|
Afiliación : |
FEDERICO GIANNITTI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JORGE P. GARCÍA, Universidad Nacional del Centro de la Provincia de Buenos Aires, Tandil, Buenos Aires, Argentina; VICKI ADAMS, Monash University, Parkville, Victoria, Australia; JOAQUÍN I. ARMENDANO, Universidad Nacional del Centro de la Provincia de Buenos Aires, Tandil, Buenos Aires, Argentina; JULIANN BEINGESSER, California Animal Health and Food Safety Laboratoy, University of California at Davis, San Bernardino, CA; JULIAN I. ROOD, Monash University, Parkville, Victoria, Australia; FRANCISCO A. UZAL, Monash University, Parkville, Victoria, Australia. |
|
Título : |
Experimental acute Clostridium perfringens type D enterotoxemia in sheep is not characterized by specific renal lesions. |
|
Complemento del título : |
Infectious Disease - Original Article. |
|
Fecha de publicación : |
2023 |
|
Fuente / Imprenta : |
Veterinary Pathology. 2023, vol.60(4):412-419. https://doi.org/10.1177/03009858231171669 |
|
ISSN : |
0300-9858 (print); 1544-2217 (online). |
|
DOI : |
10.1177/03009858231171669 |
|
Idioma : |
Inglés |
|
Notas : |
Article history: First published online May 12, 2023. -- Corresponding Author: Francisco A. Uzal, California Animal Health and Food Safety Laboratory, School of Veterinary Medicine, University of California at Davis, 105 W CVentral Ave, San Bernardino, CA 92408, USA. Email: fauzal@ucdavis.edu -- Funding: This work was supported by grant R01 AI056177 from the National Institute of Allergy and Infectious Diseases (NIAID). Research at Monash University was also supported by funding provided by the Australian Research Council to the Australian Research Council Centre of Excellence in Structural and Functional Microbial Genomics (grant no. CE0562063). -- |
|
Contenido : |
ABSTRACT.- Type D enterotoxemia, caused by Clostridium perfringens epsilon toxin (ETX), is one of the most economically important clostridial diseases of sheep. Acute type D enterotoxemia is characterized by well-documented lesions in the nervous, cardiocirculatory, and pulmonary systems. However, discrepancies and confusion exist as to whether renal lesions are part of the spectrum of lesions of this condition, which is controversial considering that for many decades it has been colloquially referred to as "pulpy kidney disease". Here, the authors assess renal changes in an experimental model of acute type D enterotoxemia in sheep and evaluate the possible role of ETX in their genesis. Four groups of 6 sheep each were intraduodenally inoculated with either a wild-type virulent C. perfringens type D strain, an etx knockout mutant unable to produce ETX, the etx mutant strain complemented with the wild-type etx gene that regains the ETX toxin production, or sterile culture medium (control group). All sheep were autopsied less than 24 hours after inoculation; none of them developed gross lesions in the kidneys. Ten predefined histologic renal changes were scored in each sheep. The proportion of sheep with microscopic changes and their severity scores did not differ significantly between groups. Mild intratubular medullary hemorrhage was observed in only 2 of the 12 sheep inoculated with the wild-type or etx-complemented bacterial strains, but not in the 12 sheep of the other 2 groups. The authors conclude that no specific gross or histologic renal lesions are observed in sheep with experimental acute type D enterotoxemia. © The Author(s) 2023 MenosABSTRACT.- Type D enterotoxemia, caused by Clostridium perfringens epsilon toxin (ETX), is one of the most economically important clostridial diseases of sheep. Acute type D enterotoxemia is characterized by well-documented lesions in the nervous, cardiocirculatory, and pulmonary systems. However, discrepancies and confusion exist as to whether renal lesions are part of the spectrum of lesions of this condition, which is controversial considering that for many decades it has been colloquially referred to as "pulpy kidney disease". Here, the authors assess renal changes in an experimental model of acute type D enterotoxemia in sheep and evaluate the possible role of ETX in their genesis. Four groups of 6 sheep each were intraduodenally inoculated with either a wild-type virulent C. perfringens type D strain, an etx knockout mutant unable to produce ETX, the etx mutant strain complemented with the wild-type etx gene that regains the ETX toxin production, or sterile culture medium (control group). All sheep were autopsied less than 24 hours after inoculation; none of them developed gross lesions in the kidneys. Ten predefined histologic renal changes were scored in each sheep. The proportion of sheep with microscopic changes and their severity scores did not differ significantly between groups. Mild intratubular medullary hemorrhage was observed in only 2 of the 12 sheep inoculated with the wild-type or etx-complemented bacterial strains, but not in the 12 sheep of the other 2 ... Presentar Todo |
|
Palabras claves : |
Clostridium perfringens type D; Enterotoxemia; ETX; Experimental infection; Kidneys; PLATAFORMA DE INVESTIGACIÓN EN SALUD ANIMAL - INIA; Renal pathology; Sheep. |
|
Asunto categoría : |
L10 Genética y mejoramiento animal |
|
Marc : |
LEADER 03352naa a2200325 a 4500
001 1064216
005 2023-06-30
008 2023 bl uuuu u00u1 u #d
022 $a0300-9858 (print); 1544-2217 (online).
024 7 $a10.1177/03009858231171669$2DOI
100 1 $aGIANNITTI, F.
245 $aExperimental acute Clostridium perfringens type D enterotoxemia in sheep is not characterized by specific renal lesions.$h[electronic resource]
260 $c2023
500 $aArticle history: First published online May 12, 2023. -- Corresponding Author: Francisco A. Uzal, California Animal Health and Food Safety Laboratory, School of Veterinary Medicine, University of California at Davis, 105 W CVentral Ave, San Bernardino, CA 92408, USA. Email: fauzal@ucdavis.edu -- Funding: This work was supported by grant R01 AI056177 from the National Institute of Allergy and Infectious Diseases (NIAID). Research at Monash University was also supported by funding provided by the Australian Research Council to the Australian Research Council Centre of Excellence in Structural and Functional Microbial Genomics (grant no. CE0562063). --
520 $aABSTRACT.- Type D enterotoxemia, caused by Clostridium perfringens epsilon toxin (ETX), is one of the most economically important clostridial diseases of sheep. Acute type D enterotoxemia is characterized by well-documented lesions in the nervous, cardiocirculatory, and pulmonary systems. However, discrepancies and confusion exist as to whether renal lesions are part of the spectrum of lesions of this condition, which is controversial considering that for many decades it has been colloquially referred to as "pulpy kidney disease". Here, the authors assess renal changes in an experimental model of acute type D enterotoxemia in sheep and evaluate the possible role of ETX in their genesis. Four groups of 6 sheep each were intraduodenally inoculated with either a wild-type virulent C. perfringens type D strain, an etx knockout mutant unable to produce ETX, the etx mutant strain complemented with the wild-type etx gene that regains the ETX toxin production, or sterile culture medium (control group). All sheep were autopsied less than 24 hours after inoculation; none of them developed gross lesions in the kidneys. Ten predefined histologic renal changes were scored in each sheep. The proportion of sheep with microscopic changes and their severity scores did not differ significantly between groups. Mild intratubular medullary hemorrhage was observed in only 2 of the 12 sheep inoculated with the wild-type or etx-complemented bacterial strains, but not in the 12 sheep of the other 2 groups. The authors conclude that no specific gross or histologic renal lesions are observed in sheep with experimental acute type D enterotoxemia. © The Author(s) 2023
653 $aClostridium perfringens type D
653 $aEnterotoxemia
653 $aETX
653 $aExperimental infection
653 $aKidneys
653 $aPLATAFORMA DE INVESTIGACIÓN EN SALUD ANIMAL - INIA
653 $aRenal pathology
653 $aSheep
700 1 $aGARCÍA, J. P.
700 1 $aADAMS, V.
700 1 $aARMENDANO, J.
700 1 $aBEINGESSER, J.
700 1 $aROOD, J.
700 1 $aUZAL, F. A.
773 $tVeterinary Pathology. 2023, vol.60(4):412-419. https://doi.org/10.1177/03009858231171669
Descargar
Esconder MarcPresentar Marc Completo |
|
Registro original : |
INIA Las Brujas (LB) |
|
|
Biblioteca
|
Identificación
|
Origen
|
Tipo / Formato
|
Clasificación
|
Cutter
|
Registro
|
Volumen
|
Estado
|
Volver
|
| Expresión de búsqueda válido. Check! |
|
|
