Amaranthus palmeri a New Invasive Weed in Spain with Herbicide Resistant Biotypes

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dc.contributor.authorTorra Farré, Joel
dc.contributor.authorRoyo-Esnal, Aritz
dc.contributor.authorRomano, Yolanda
dc.contributor.authorOsuna, Maria D.
dc.contributor.authorLeón, Ramón G.
dc.contributor.authorRecasens i Guinjuan, Jordi
dc.date.accessioned2020-10-27T13:36:06Z
dc.date.available2020-10-27T13:36:06Z
dc.date.issued2020-07-10
dc.date.updated2020-10-27T13:36:07Z
dc.description.abstractAmaranthus palmeri is the most prominent invasive weed in agricultural land from North America, partly due to its propensity to evolve resistance to multiple herbicide sites of action. In the last two decades, reports of this species have increased throughout the American continent and occasionally in other continents. In 2007, A. palmeri populations were found in three localities in northeastern Spain, and they are still present today. To determine whether these three populations resulted from a common or independent introduction events¿and when and from where they could have occurred¿research was carried out aiming to characterize the resistance profile and mechanisms to 5-enolpyruvylshikimate-3-phosphate synthase-and acetolactate synthase (ALS)-inhibiting herbicides and to analyze the relationship between these three populations using inter simple sequence repeat DNA fingerprinting. Dose-response trials confirmed that the three populations were susceptible to glyphosate but resistant to nicosulfuron-methyl. Resistance to ALS inhibitors was due to several amino acid substitutions in positions Pro197, Trp574 and Ser653. Moreover, the substitutions Ser653Ile and Pro197Thr are described for the first time in this species. At field-labeled rates, all populations were fully controlled with alternative herbicides with other sites of action. Amaranthus palmeri individuals were clustered in three groups based on unweighted pair group method with arithmetic mean analysis, which corresponded to the three sampled populations, with a 67% of genetic relationship among them. Considering this high genetic variability and the different positions and amino acid substations found between populations, it was hypothesized that different colonization events occurred from the American continent probably prior to the introduction of glyphosate resistant crops. Prevention from new introductions is warranted because new herbicide resistance traits could arrive, complicating the management of this invasive weed species, while managing or eradicating the already established populations.
dc.description.sponsorshipThis work was funded by Spanish Government through the project AGL2017-83325-C4-2-R (AEI/FEDER/UE). Joel Torra acknowledges support from the Spanish Ministry of Science, Innovation and Universities (grant Ramon y Cajal RYC2018-023866-I).
dc.format.mimetypeapplication/pdf
dc.identifier.doihttps://doi.org/10.3390/agronomy10070993
dc.identifier.idgrec030438
dc.identifier.issn2073-4395
dc.identifier.urihttp://hdl.handle.net/10459.1/69716
dc.language.isoeng
dc.publisherMDPI
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AGL2017-83325-C4-2-R/ES/GESTION DE MALAS HIERBAS EN CEERALES Y VIÑA MEDIANTE LA INTEGRACION DE SISTEMAS DE MANEJO Y HERRAMIENTAS DE DECISION/
dc.relation.isformatofReproducció del document publicat a: https://doi.org/10.3390/agronomy10070993
dc.relation.ispartofAgronomy-Basel, 2020, vol. 10, num. 7, p. 993
dc.rightscc-by (c) Torra Farré, Joel et al., 2020
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectAlien plant
dc.subjectDendrogram
dc.subjectGlyphosate
dc.subjectMaize
dc.subjectNicosulfuron-methyl
dc.subjectTarget-site resistance
dc.titleAmaranthus palmeri a New Invasive Weed in Spain with Herbicide Resistant Biotypes
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
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