Please use this identifier to cite or link to this item:
acessibilidade
http://hdl.handle.net/20.500.12207/5424
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Rojano-Blanco, Antonia | - |
dc.contributor.author | Portugal, João | - |
dc.contributor.author | Palma-Bautista, Candelario | - |
dc.contributor.author | Alcantara-de la Cruz, Ricardo | - |
dc.contributor.author | Torra, Joel | - |
dc.contributor.author | Alcantara, Esteban | - |
dc.contributor.author | De Prado, Rafael | - |
dc.date.accessioned | 2022-05-05T12:12:40Z | - |
dc.date.available | 2022-05-05T12:12:40Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Rojano-Delgado, A.M., Portugal, J.M., Palma-Bautista, C., Alcántara-de la Cruz, R., Torra, J., Alcántara, E. & De Prado, R. (2019). Scientific Reports, 9 (15423). https://doi.org/10.1038/s41598-019-51682-z | por |
dc.identifier.uri | http://hdl.handle.net/20.500.12207/5424 | - |
dc.description.abstract | Euphorbia heterophylla is a weed species that invades extensive crop areas in subtropical regions of Brazil. This species was previously controlled by imazamox, but the continuous use of this herbicide has selected for resistant biotypes. Two biotypes of E. heterophylla from southern Brazil, one resistant (R) and one susceptible (S) to imazamox, were compared. The resistance of the R biotype was confrmed by dose-response assays since it required 1250.2g ai ha−1 to reduce the fresh weight by 50% versus 7.4g ai ha−1 for the S biotype. The acetolactate synthase (ALS) enzyme activity was studied using ALS-inhibiting herbicides from fve diferent chemical families. The R biotype required the highest concentrations to reduce this enzyme activity by 50%. A Ser653Asn mutation was found in the ALS gene of the R biotype. The experiments carried out showed that imazamox absorption and metabolism were not involved in resistance. However, greater 14C-imazamox root exudation was found in the R biotype (~70% of the total absorbed imazamox). Target site mutation in the ALS gene is the principal mechanism that explains the imazamox resistance of the R biotype, but root exudation seems to also contribute to the resistance of this biotype | por |
dc.language.iso | eng | por |
dc.publisher | Nature | por |
dc.relation | This work was funded by the AGL2016-78944-R (Spain) project and Asociación de Agroquímicos y Medioambiente | por |
dc.rights | openAccess | por |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | por |
dc.subject | Euphorbia heterophylla | por |
dc.subject | Pest control | por |
dc.subject | Extensive crop areas | por |
dc.subject | Imazamox | por |
dc.subject | Controlo de infestantes | por |
dc.subject | Herbicida | por |
dc.title | Target site as the main mechanism of resistance to imazamox in a Euphorbia heterophylla biotype | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | https://www.nature.com/articles/s41598-019-51682-z.pdf | por |
degois.publication.title | Science Report | por |
degois.publication.volume | 9 (15423) | por |
dc.identifier.doi | https://doi.org/10.1038/s41598-019-51682-z | por |
Appears in Collections: | D-BIO - Artigos em revistas indexadas à WoS/Scopus |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Target site as the main mechanism.pdf | 1.59 MB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License