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dc.contributor.authorVázquez-García, José Guadalupe
dc.contributor.authorPalma-Bautista, Candelario
dc.contributor.authorRojano Delgado, Antonia M.
dc.contributor.authorPrado Amián, Rafael de
dc.contributor.authorMenéndez Calle, Julio
dc.date.accessioned2020-03-03T07:51:31Z
dc.date.available2020-03-03T07:51:31Z
dc.date.issued2020
dc.identifier.urihttp://hdl.handle.net/10396/19672
dc.description.abstractSix Johnsongrass populations suspected of being glyphosate resistant were collected from railways and freeways near Cordoba (SW Spain), where glyphosate is the main weed control tool. The 50% reduction in shoot fresh weight (GR50) values obtained for these six populations ranged from 550.4 to 1169 g ae ha−1, which were 4.2 to 9 times greater than the value obtained for the susceptible population. Glyphosate was equally metabolized to the same extent in both resistant and susceptible populations, with no significant differences in either 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) inhibition or basal activity. No amino acid substitutions were observed in any of the resistant populations. Slight but significant differences in glyphosate penetration were observed among some but not all of the resistant populations and for the times of incubation assayed, although these differences were not considered further. The proposed primary mechanism of resistance in these six glyphosate-resistant Johnsongrass populations is reduced herbicide translocation, because the amount of glyphosate that translocated from treated leaves to shoots and roots in the susceptible population was double that observed in the resistant populations. As glyphosate multiple resistance due to more than one mechanism is not uncommon, this is the first time that glyphosate-resistant Johnsongrass populations have been fully described for all known mechanisms.es_ES
dc.format.mimetypeapplication/pdfes_ES
dc.language.isoenges_ES
dc.publisherMDPIes_ES
dc.rightshttps://creativecommons.org/licenses/by/4.0/es_ES
dc.sourcePlants 9(3), 313 (2020)es_ES
dc.subjectTranslocationes_ES
dc.subjectMetabolismes_ES
dc.subjectPenetrationes_ES
dc.subjectEPSPSes_ES
dc.subjectNon-target site resistancees_ES
dc.subjectResistant weedses_ES
dc.titleThe First Case of Glyphosate Resistance in Johnsongrass (Sorghum halepense (L.) Pers.) in Europees_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttp://dx.doi.org/10.3390/plants9030313es_ES
dc.relation.projectIDGobierno de España. AGL2016-78944-Res_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES


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