Physiological performance of glyphosate and imazamox mixtures on Amaranthus palmeri sensitive and resistant to glyphosate

Fernández Escalada, Manuel; Zulet González, Ainhoa; Gil Monreal, Miriam; Royuela Hernando, Mercedes; Zabalza Aznárez, Ana

Physiological performance of glyphosate and imazamox mixtures on Amaranthus palmeri sensitive and resistant to glyphosate

dc.contributor.author	Fernández Escalada, Manuel
dc.contributor.author	Zulet González, Ainhoa
dc.contributor.author	Gil Monreal, Miriam
dc.contributor.author	Royuela Hernando, Mercedes
dc.contributor.author	Zabalza Aznárez, Ana
dc.contributor.department	Institute for Multidisciplinary Research in Applied Biology - IMAB	en
dc.contributor.funder	Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa	es
dc.date.accessioned	2020-05-12T11:15:20Z
dc.date.available	2020-05-12T11:15:20Z
dc.date.issued	2019
dc.description.abstract	The herbicides glyphosate and imazamox inhibit the biosynthetic pathway of aromatic amino acids (AAA) and branched-chain amino acids (BCAA), respectively. Both herbicides share several physiological effects in the processes triggered in plants after herbicide application that kills the plant, and mixtures of both herbicides are being used. The aim of this study was to evaluate the physiological effects in the mixture of glyphosate and imazamox in glyphosate-sensitive (GS) and -resistant (GR) populations of the troublesome weed Amaranthus palmeri. The changes detected in the physiological parameters after herbicide mixtures application were similar and even less to the changes detected after individual treatments. This pattern was detected in shikimate, amino acid and carbohydrate content, and it was independent of the EPSPS copy number, as it was detected in both populations. In the case of the transcriptional pattern of the AAA pathway after glyphosate, interesting and contrary interactions with imazamox treatment were detected for both populations; enhancement of the effect in the GS population and alleviation in the GR population. At the transcriptional level, no cross regulation between AAA and BCAA inhibitors was confirmed. This study suggests that mixtures are equally or less toxic than herbicides alone, and would implicate careful considerations when applying the herbicide mixtures.	en
dc.description.sponsorship	This work was supported by a grant from the Ministerio Español de Economía y Competitividad (Project number AGL2016-77531-R). M.F.-E. and A.Z.-G. received funding from fellowships trough Universidad Pública de Navarra.	en
dc.format.extent	14 p.
dc.format.mimetype	application/pdf	en
dc.identifier.doi	10.1038/s41598-019-54642-9
dc.identifier.issn	2045-2322
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/36851
dc.language.iso	eng	en
dc.publisher	Nature Research	en
dc.relation.ispartof	Scientific Reports, (2019) 9:18225	en
dc.relation.projectID	info:eu-repo/grantAgreement/ES/1PE/AGL2016-77531-R/
dc.relation.publisherversion	https://doi.org/10.1038/s41598-019-54642-9
dc.rights	© The Author(s) 2019. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.	en
dc.rights.accessRights	info:eu-repo/semantics/openAccess
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/
dc.subject	Herbicides	en
dc.subject	Amaranthus palmeri	en
dc.subject	Glyphosate	en
dc.subject	Imazamox	en
dc.title	Physiological performance of glyphosate and imazamox mixtures on Amaranthus palmeri sensitive and resistant to glyphosate	en
dc.type	info:eu-repo/semantics/article
dc.type.version	info:eu-repo/semantics/publishedVersion
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