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Non-Target Site Mechanisms Endow Resistance to Glyphosate in Saltmarsh Aster (Aster squamatus)
dc.contributor.author | Domínguez-Valenzuela, José Alfredo | |
dc.contributor.author | Alcántara-de la Cruz, Ricardo | |
dc.contributor.author | Palma-Bautista, Candelario | |
dc.contributor.author | Vázquez-García, José Guadalupe | |
dc.contributor.author | Cruz Hipólito, Hugo E. | |
dc.contributor.author | Prado, Rafael de | |
dc.date.accessioned | 2021-10-01T10:48:45Z | |
dc.date.available | 2021-10-01T10:48:45Z | |
dc.date.issued | 2021 | |
dc.identifier.uri | http://hdl.handle.net/10396/21763 | |
dc.description.abstract | Of the six-glyphosate resistant weed species reported in Mexico, five were found in citrus groves. Here, the glyphosate susceptibility level and resistance mechanisms were evaluated in saltmarsh aster (Aster squamatus), a weed that also occurs in Mexican citrus groves. The R population accumulated 4.5-fold less shikimic acid than S population. S plants hardly survived at 125 g ae ha−1 while most of the R plants that were treated with 1000 g ae ha−1, which suffered a strong growth arrest, showed a vigorous regrowth from the third week after treatment. Further, 5-enolpyruvylshikimate-3-phosphate basal and enzymatic activities did not diverge between populations, suggesting the absence of target-site resistance mechanisms. At 96 h after treatment, R plants absorbed ~18% less glyphosate and maintained 63% of the 14C-glyphsoate absorbed in the treated leaf in comparison to S plants. R plants metabolized twice as much (72%) glyphosate to amino methyl phosphonic acid and glyoxylate as the S plants. Three non-target mechanisms, reduced absorption and translocation and increased metabolism, confer glyphosate resistance saltmarsh aster. This is the first case of glyphosate resistance recorded for A. squamatus in the world. | es_ES |
dc.format.mimetype | application/pdf | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | MDPI | es_ES |
dc.rights | https://creativecommons.org/licenses/by/4.0/ | es_ES |
dc.source | Plants 10(9), 1970 (2021) | es_ES |
dc.subject | Aminomethylphosphonic acid | es_ES |
dc.subject | Glyphosate metabolism | es_ES |
dc.subject | Impaired translocation | es_ES |
dc.subject | Phoenix phenomenon | es_ES |
dc.subject | Reduced absorption | es_ES |
dc.title | Non-Target Site Mechanisms Endow Resistance to Glyphosate in Saltmarsh Aster (Aster squamatus) | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.relation.publisherversion | https://doi.org/10.3390/plants10091970 | es_ES |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es_ES |