Does sourgrass leaf anatomy influence glyphosate resistance?
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.14295/CS.v6i4.1124 http://hdl.handle.net/11449/220569 |
Resumo: | Sourgrass(Digitaria insularis, L. Mez ex Ekman) is a weed that requires high rates of glyphosate ((N-[phosphonomethyl]-glycine) forcontrol, verylittle of the herbicide applied isabsorbed by theleaves. Morphological and histological differences in leaves of glyphosate-resistant and glyphosate-susceptible plantsshould explain the contrast of variance between herbicide susceptibility. Leaves of different growth and phenological stages were collected and submitted to histological and electron microscopy scanning analysis. Those plants were also submitted to a glyphosate dose-response curve analysis. The results suggest thatbiotypes exhibits differences infoliar structures that can influence the uptake and translocation of glyphosate. A thinparenchyma, lesser distance amongvascular bundles, and higher phloem sizewere found in resistant biotypes (differences close to 10%). Minor stomata number and higher epicuticular waxy deposition in stomata and leaf surface were found in resistant plants when leaves came from regrowth, leading to a possiblelesser herbicide absorption. Resistant plants showed absence of trichomes in late stages of development (64% less trichomes than susceptible plants). The higher concentration of trichomes in susceptible plants can be an absorption pathfor glyphosate getthrough the cuticle. |
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Repositório Institucional da UNESP |
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Does sourgrass leaf anatomy influence glyphosate resistance?AbsorptionHerbicide resistanceParenchymaTrichomesSourgrass(Digitaria insularis, L. Mez ex Ekman) is a weed that requires high rates of glyphosate ((N-[phosphonomethyl]-glycine) forcontrol, verylittle of the herbicide applied isabsorbed by theleaves. Morphological and histological differences in leaves of glyphosate-resistant and glyphosate-susceptible plantsshould explain the contrast of variance between herbicide susceptibility. Leaves of different growth and phenological stages were collected and submitted to histological and electron microscopy scanning analysis. Those plants were also submitted to a glyphosate dose-response curve analysis. The results suggest thatbiotypes exhibits differences infoliar structures that can influence the uptake and translocation of glyphosate. A thinparenchyma, lesser distance amongvascular bundles, and higher phloem sizewere found in resistant biotypes (differences close to 10%). Minor stomata number and higher epicuticular waxy deposition in stomata and leaf surface were found in resistant plants when leaves came from regrowth, leading to a possiblelesser herbicide absorption. Resistant plants showed absence of trichomes in late stages of development (64% less trichomes than susceptible plants). The higher concentration of trichomes in susceptible plants can be an absorption pathfor glyphosate getthrough the cuticle.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Universidade Estadual PaulistaUniversidade de São PauloUniversidade Federal do ParanáUniversidade Estadual PaulistaUniversidade Estadual Paulista (UNESP)Universidade de São Paulo (USP)Universidade Federal do Paraná (UFPR)Barroso, Arthur Arrobas Martins [UNESP]Galeano, EstebanPaiola Albrecht, AlfredoDos Reis, Fabrícia CristinaFilho, Ricardo Victoria2022-04-28T19:02:47Z2022-04-28T19:02:47Z2015-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article445-453http://dx.doi.org/10.14295/CS.v6i4.1124Comunicata Scientiae, v. 6, n. 4, p. 445-453, 2015.2176-9079http://hdl.handle.net/11449/22056910.14295/CS.v6i4.11242-s2.0-84959530024Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengComunicata Scientiaeinfo:eu-repo/semantics/openAccess2022-04-28T19:02:48Zoai:repositorio.unesp.br:11449/220569Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:16:58.409235Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Does sourgrass leaf anatomy influence glyphosate resistance? |
title |
Does sourgrass leaf anatomy influence glyphosate resistance? |
spellingShingle |
Does sourgrass leaf anatomy influence glyphosate resistance? Barroso, Arthur Arrobas Martins [UNESP] Absorption Herbicide resistance Parenchyma Trichomes |
title_short |
Does sourgrass leaf anatomy influence glyphosate resistance? |
title_full |
Does sourgrass leaf anatomy influence glyphosate resistance? |
title_fullStr |
Does sourgrass leaf anatomy influence glyphosate resistance? |
title_full_unstemmed |
Does sourgrass leaf anatomy influence glyphosate resistance? |
title_sort |
Does sourgrass leaf anatomy influence glyphosate resistance? |
author |
Barroso, Arthur Arrobas Martins [UNESP] |
author_facet |
Barroso, Arthur Arrobas Martins [UNESP] Galeano, Esteban Paiola Albrecht, Alfredo Dos Reis, Fabrícia Cristina Filho, Ricardo Victoria |
author_role |
author |
author2 |
Galeano, Esteban Paiola Albrecht, Alfredo Dos Reis, Fabrícia Cristina Filho, Ricardo Victoria |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade de São Paulo (USP) Universidade Federal do Paraná (UFPR) |
dc.contributor.author.fl_str_mv |
Barroso, Arthur Arrobas Martins [UNESP] Galeano, Esteban Paiola Albrecht, Alfredo Dos Reis, Fabrícia Cristina Filho, Ricardo Victoria |
dc.subject.por.fl_str_mv |
Absorption Herbicide resistance Parenchyma Trichomes |
topic |
Absorption Herbicide resistance Parenchyma Trichomes |
description |
Sourgrass(Digitaria insularis, L. Mez ex Ekman) is a weed that requires high rates of glyphosate ((N-[phosphonomethyl]-glycine) forcontrol, verylittle of the herbicide applied isabsorbed by theleaves. Morphological and histological differences in leaves of glyphosate-resistant and glyphosate-susceptible plantsshould explain the contrast of variance between herbicide susceptibility. Leaves of different growth and phenological stages were collected and submitted to histological and electron microscopy scanning analysis. Those plants were also submitted to a glyphosate dose-response curve analysis. The results suggest thatbiotypes exhibits differences infoliar structures that can influence the uptake and translocation of glyphosate. A thinparenchyma, lesser distance amongvascular bundles, and higher phloem sizewere found in resistant biotypes (differences close to 10%). Minor stomata number and higher epicuticular waxy deposition in stomata and leaf surface were found in resistant plants when leaves came from regrowth, leading to a possiblelesser herbicide absorption. Resistant plants showed absence of trichomes in late stages of development (64% less trichomes than susceptible plants). The higher concentration of trichomes in susceptible plants can be an absorption pathfor glyphosate getthrough the cuticle. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-01-01 2022-04-28T19:02:47Z 2022-04-28T19:02:47Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.14295/CS.v6i4.1124 Comunicata Scientiae, v. 6, n. 4, p. 445-453, 2015. 2176-9079 http://hdl.handle.net/11449/220569 10.14295/CS.v6i4.1124 2-s2.0-84959530024 |
url |
http://dx.doi.org/10.14295/CS.v6i4.1124 http://hdl.handle.net/11449/220569 |
identifier_str_mv |
Comunicata Scientiae, v. 6, n. 4, p. 445-453, 2015. 2176-9079 10.14295/CS.v6i4.1124 2-s2.0-84959530024 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Comunicata Scientiae |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
445-453 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128339314999296 |