Enhancement of glyphosate efficacy on Amaranthus palmeri by exogenous quinate application

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

Publication:
Enhancement of glyphosate efficacy on Amaranthus palmeri by exogenous quinate application

dc.contributor.author	Zulet González, Ainhoa
dc.contributor.author	Fernández Escalada, Manuel
dc.contributor.author	Zabalza Aznárez, Ana
dc.contributor.author	Royuela Hernando, Mercedes
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	2019-11-12T13:50:18Z
dc.date.available	2019-11-12T13:50:18Z
dc.date.issued	2019
dc.description.abstract	Glyphosate is a widely used herbicide targeting the enzyme 5-enolpyruvylshikimate 3-phosphate synthase (EPSPS) in the aromatic amino acid biosynthesis pathway (shikimate pathway) and provoking accumulation of quinate, a secondary metabolite synthesized through a side branch of this pathway. The objective of this work was to evaluate whether the efficacy of glyphosate activity in Amaranthus palmeri is enhanced by quinate application one day after herbicide treatment. To this end, one glyphosate-sensitive and one glyphosate-resistant (due to EPSPS gene amplification) population of A. palmeri were used. The 3- day time course study of the quinate treatment alone showed quinate, Tyr and Phe accumulation in both populations. When the herbicide was applied alone at 0.25× the recommended dose, no phytotoxicity or glyphosate effects were detected in the sensitive population 3 days after treatment, but the combined treatment with quinate was lethal, and markers of herbicide activity at the amino acid level could be detected. In the resistant population, an important metabolic perturbation in the flux of the shikimate pathway was detected in the combined treatment. These results raise the possibility of the joint application of quinate and glyphosate to enhance glyphosate efficacy while lowering doses in the sensitive population.	en
dc.description.sponsorship	This work was supported by a grant from the Ministerio de Economía y Competitividad , Spain (Project number AGL2016-77531-R ). AZ-G and MF-E received funding from fellowships trough Universidad Pública de Navarra.	en
dc.format.extent	11 p.
dc.format.mimetype	application/pdf	en
dc.identifier.doi	10.1016/j.pestbp.2019.04.004
dc.identifier.issn	0048-3575
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/35365
dc.language.iso	eng	en
dc.publisher	Elsevier	en
dc.relation.ispartof	Pesticide Biochemistry and Physiology 158 (2019) 1-11	en
dc.relation.projectID	info:eu-repo/grantAgreement/ES/1PE/AGL2016-77531-R	en
dc.relation.publisherversion	https://doi.org/10.1016/j.pestbp.2019.04.004
dc.rights	© 2019 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license.	en
dc.rights.accessRights	info:eu-repo/semantics/openAccess
dc.rights.uri	http://creativecommons.org/licenses/BY-NC-ND/4.0/
dc.subject	Free amino acid content	en
dc.subject	Aromatic amino acid pathway	en
dc.subject	Amaranthus palmeri	en
dc.subject	DAHPS	en
dc.subject	EPSPS	en
dc.title	Enhancement of glyphosate efficacy on Amaranthus palmeri by exogenous quinate application	en
dc.type	info:eu-repo/semantics/article
dc.type.version	info:eu-repo/semantics/publishedVersion	en
dc.type.version	Versión publicada / Argitaratu den bertsioa	es
dspace.entity.type	Publication
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