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This work was funded by the Asociacion de Agroquimicos y Medioambiente and the Universidad Autonoma Chapingo.

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Vazquez-Garcia, Jose GuadalupeAuthor

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March 5, 2025
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Non-Target Site Mechanisms Endow Resistance to Glyphosate in Saltmarsh Aster (Aster squamatus)

Publicated to:Plants-Basel. 10 (9): 1970- - 2021-09-01 10(9), DOI: 10.3390/plants10091970

Authors: Dominguez-Valenzuela, Jose Alfredo; de la Cruz, Ricardo; Palma-Bautista, Candelario; Vazquez-Garcia, Jose Guadalupe; Cruz-Hipolito, Hugo E; De Prado, Rafael

Affiliations

Univ Autonoma Chapingo, Dept Parasitol Agr, Texcoco 56230, Mexico - Author
Univ Cordoba, Dept Agr Chem Edaphol & Microbiol, Cordoba 14014, Spain - Author
Univ Fed Sao Carlos, Ctr Ciencias, Campus Lagoa Sino, BR-18290000 Buri, Brazil - Author

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 similar to 18% less glyphosate and maintained 63% of the C-14-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.

Keywords

Aminomethylphosphonic acidDegradationGlyphosate metabolismHerbicide resistanceImpaired translocationLolium-multiflorumPhoenix phenomenonReduced absorptioReduced absorptionTargeTranslocation

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Plants-Basel due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2021, it was in position 39/239, thus managing to position itself as a Q1 (Primer Cuartil), in the category Plant Sciences.

From a relative perspective, and based on the normalized impact indicator calculated from the Field Citation Ratio (FCR) of the Dimensions source, it yields a value of: 1.63, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: Dimensions Jul 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-07-10, the following number of citations:

  • WoS: 5
  • Scopus: 7
  • Europe PMC: 1

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-07-10:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 16 (PlumX).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Brazil; Mexico.