Rimsulfuron uptake, translocation, metabolism and

Research was conducted to determine the role in selectivityof uptake, translocation, metabolism and ALS (acetolactatesynthase) activity of rimsulfuron in two maize (Zea maysL.) hybrids (‘Cargill 2127’, tolerant, and ‘Pioneer 3897’,sensitive) grown at temperatures of 14°C and 21°C. Fortyeight hours a...

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Autores:
Fuentes, Cilia L.
Leroux, Gilles D.
Tipo de recurso:
Article of journal
Fecha de publicación:
2003
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/31323
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/31323
http://bdigital.unal.edu.co/21401/
Palabra clave:
Herbicides
sulfonylureas
rimsulfuron
Rights
openAccess
License
Atribución-NoComercial 4.0 Internacional
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repository_id_str
spelling Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Fuentes, Cilia L.0e02aa4b-b0e9-4d5b-a9fa-3ffab4e4bf70300Leroux, Gilles D.ee4baf5e-4869-4750-bc46-4ca7186bca183002019-06-26T14:28:20Z2019-06-26T14:28:20Z2003https://repositorio.unal.edu.co/handle/unal/31323http://bdigital.unal.edu.co/21401/Research was conducted to determine the role in selectivityof uptake, translocation, metabolism and ALS (acetolactatesynthase) activity of rimsulfuron in two maize (Zea maysL.) hybrids (‘Cargill 2127’, tolerant, and ‘Pioneer 3897’,sensitive) grown at temperatures of 14°C and 21°C. Fortyeight hours after treatment (HAT), uptake of rimsulfuronwas 40% and 67% in ‘Pioneer 3897’, and 26% and 43%in ‘Cargill 2127’ at 14°C and 21°C, respectively. Neithertotal translocation nor allocation of rimsulfuron in variousorgans differed greatly between the hybrids. Translocationof 14C-rimsulfuron was greater at 21°C (53%) than at 14°C(23%), 48 HAT. In ‘Pioneer 3897’ over 65% and 30% ofthe total 14C-activity present in plant extracts was recoveredas the parent compound within 24 HAT, at 14°C and21°C, respectively. However, in ‘Cargill 2127’ detoxificationof rimsulfuron was not affected by temperature, and27% of the 14C-total activity was recovered as the parentcompound. Crude ALS extracts from ‘Pioneer 3897’ and‘Cargill 2127’ maize seedlings were treated with variousdoses (0.001, 0.005, 0.01, 0.1 and 1.0 μM) of rimsulfuron.Based on ALS specific activity, I 50 values differed sligthlybetween the two hybrids (I 50 ‘Pioneer 3897’ = 0.091 μMand I 50 ‘Cargill 2127’ = 0.142 μM). These results suggestthat the mechanism of rimsulfuron tolerance in maizecould be mainly explained by differential herbicide uptakeand detoxification, with translocation and ALS sensitivityhaving little effect on differential tolerance of these maizehybrids to rimsulfuron. On the other hand, the greateruptake and translocation of rimsulfuron at 21°C, comparedto 14°C, could explain the observed herbicide injury inmaize at high temperatures under field conditions.application/pdfspaUniversidad Nacional de Colombia, Facultad de Agronomía, Centro Editorialhttp://revistas.unal.edu.co/index.php/agrocol/article/view/17775Universidad Nacional de Colombia Revistas electrónicas UN Agronomía ColombianaAgronomía ColombianaAgronomía Colombiana; Vol. 21, núm. 1 Y 2 (2003); 17-28 Agronomía Colombiana; Vol. 21, núm. 1 Y 2 (2003); 17-28 2357-3732 0120-9965Fuentes, Cilia L. and Leroux, Gilles D. (2003) Rimsulfuron uptake, translocation, metabolism and. Agronomía Colombiana; Vol. 21, núm. 1 Y 2 (2003); 17-28 Agronomía Colombiana; Vol. 21, núm. 1 Y 2 (2003); 17-28 2357-3732 0120-9965 .Rimsulfuron uptake, translocation, metabolism andArtículo de revistainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1http://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/ARTHerbicidessulfonylureasrimsulfuronORIGINAL17775-56937-1-PB.pdfapplication/pdf413889https://repositorio.unal.edu.co/bitstream/unal/31323/1/17775-56937-1-PB.pdf94a033e2d95879f4684fc830c4419f87MD51THUMBNAIL17775-56937-1-PB.pdf.jpg17775-56937-1-PB.pdf.jpgGenerated Thumbnailimage/jpeg9725https://repositorio.unal.edu.co/bitstream/unal/31323/2/17775-56937-1-PB.pdf.jpgd2e33e4a9459eb75a072cbaaeb9c5f79MD52unal/31323oai:repositorio.unal.edu.co:unal/313232023-11-29 23:05:50.927Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co
dc.title.spa.fl_str_mv Rimsulfuron uptake, translocation, metabolism and
title Rimsulfuron uptake, translocation, metabolism and
spellingShingle Rimsulfuron uptake, translocation, metabolism and
Herbicides
sulfonylureas
rimsulfuron
title_short Rimsulfuron uptake, translocation, metabolism and
title_full Rimsulfuron uptake, translocation, metabolism and
title_fullStr Rimsulfuron uptake, translocation, metabolism and
title_full_unstemmed Rimsulfuron uptake, translocation, metabolism and
title_sort Rimsulfuron uptake, translocation, metabolism and
dc.creator.fl_str_mv Fuentes, Cilia L.
Leroux, Gilles D.
dc.contributor.author.spa.fl_str_mv Fuentes, Cilia L.
Leroux, Gilles D.
dc.subject.proposal.spa.fl_str_mv Herbicides
sulfonylureas
rimsulfuron
topic Herbicides
sulfonylureas
rimsulfuron
description Research was conducted to determine the role in selectivityof uptake, translocation, metabolism and ALS (acetolactatesynthase) activity of rimsulfuron in two maize (Zea maysL.) hybrids (‘Cargill 2127’, tolerant, and ‘Pioneer 3897’,sensitive) grown at temperatures of 14°C and 21°C. Fortyeight hours after treatment (HAT), uptake of rimsulfuronwas 40% and 67% in ‘Pioneer 3897’, and 26% and 43%in ‘Cargill 2127’ at 14°C and 21°C, respectively. Neithertotal translocation nor allocation of rimsulfuron in variousorgans differed greatly between the hybrids. Translocationof 14C-rimsulfuron was greater at 21°C (53%) than at 14°C(23%), 48 HAT. In ‘Pioneer 3897’ over 65% and 30% ofthe total 14C-activity present in plant extracts was recoveredas the parent compound within 24 HAT, at 14°C and21°C, respectively. However, in ‘Cargill 2127’ detoxificationof rimsulfuron was not affected by temperature, and27% of the 14C-total activity was recovered as the parentcompound. Crude ALS extracts from ‘Pioneer 3897’ and‘Cargill 2127’ maize seedlings were treated with variousdoses (0.001, 0.005, 0.01, 0.1 and 1.0 μM) of rimsulfuron.Based on ALS specific activity, I 50 values differed sligthlybetween the two hybrids (I 50 ‘Pioneer 3897’ = 0.091 μMand I 50 ‘Cargill 2127’ = 0.142 μM). These results suggestthat the mechanism of rimsulfuron tolerance in maizecould be mainly explained by differential herbicide uptakeand detoxification, with translocation and ALS sensitivityhaving little effect on differential tolerance of these maizehybrids to rimsulfuron. On the other hand, the greateruptake and translocation of rimsulfuron at 21°C, comparedto 14°C, could explain the observed herbicide injury inmaize at high temperatures under field conditions.
publishDate 2003
dc.date.issued.spa.fl_str_mv 2003
dc.date.accessioned.spa.fl_str_mv 2019-06-26T14:28:20Z
dc.date.available.spa.fl_str_mv 2019-06-26T14:28:20Z
dc.type.spa.fl_str_mv Artículo de revista
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dc.identifier.eprints.spa.fl_str_mv http://bdigital.unal.edu.co/21401/
url https://repositorio.unal.edu.co/handle/unal/31323
http://bdigital.unal.edu.co/21401/
dc.language.iso.spa.fl_str_mv spa
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dc.relation.spa.fl_str_mv http://revistas.unal.edu.co/index.php/agrocol/article/view/17775
dc.relation.ispartof.spa.fl_str_mv Universidad Nacional de Colombia Revistas electrónicas UN Agronomía Colombiana
Agronomía Colombiana
dc.relation.ispartofseries.none.fl_str_mv Agronomía Colombiana; Vol. 21, núm. 1 Y 2 (2003); 17-28 Agronomía Colombiana; Vol. 21, núm. 1 Y 2 (2003); 17-28 2357-3732 0120-9965
dc.relation.references.spa.fl_str_mv Fuentes, Cilia L. and Leroux, Gilles D. (2003) Rimsulfuron uptake, translocation, metabolism and. Agronomía Colombiana; Vol. 21, núm. 1 Y 2 (2003); 17-28 Agronomía Colombiana; Vol. 21, núm. 1 Y 2 (2003); 17-28 2357-3732 0120-9965 .
dc.rights.spa.fl_str_mv Derechos reservados - Universidad Nacional de Colombia
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dc.rights.license.spa.fl_str_mv Atribución-NoComercial 4.0 Internacional
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dc.rights.accessrights.spa.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial 4.0 Internacional
Derechos reservados - Universidad Nacional de Colombia
http://creativecommons.org/licenses/by-nc/4.0/
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
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