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Identifying Chloris Species from Cuban Citrus Orchards and Determining Their Glyphosate-Resistance Status

Overview of attention for article published in Frontiers in Plant Science, November 2017
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Title
Identifying Chloris Species from Cuban Citrus Orchards and Determining Their Glyphosate-Resistance Status
Published in
Frontiers in Plant Science, November 2017
DOI 10.3389/fpls.2017.01977
Pubmed ID
Authors

Enzo R. Bracamonte, Pablo T. Fernández-Moreno, Fernando Bastida, María D. Osuna, Ricardo Alcántara-de la Cruz, Hugo E. Cruz-Hipolito, Rafael De Prado

Abstract

The Chloris genus is a C4 photosynthetic species mainly distributed in tropical and subtropical regions. Populations of three Chloris species occurring in citrus orchards from central Cuba, under long history glyphosate-based weed management, were studied for glyphosate-resistant status by characterizing their herbicide resistance/tolerance mechanisms. Morphological and molecular analyses allowed these species to be identified as C. ciliata Sw., Chloris elata Desv., and Chloris barbata Sw. Based on the glyphosate rate that causes 50% mortality of the treated plants, glyphosate resistance (R) was confirmed only in C. elata, The R population was 6.1-fold more resistant compared to the susceptible (S) population. In addition, R plants of C. elata accumulated 4.6-fold less shikimate after glyphosate application than S plants. Meanwhile, populations of C. barbata and C. ciliata with or without glyphosate application histories showed similar LD50 values and shikimic acid accumulation rates, demonstrating that resistance to glyphosate have not evolved in these species. Plants of R and S populations of C. elata differed in 14C-glyphosate absorption and translocation. The R population exhibited 27.3-fold greater 5-enolpyruvyl shikimate-3-phosphate synthase (EPSPS) activity than the S population due to a target site mutation corresponding to a Pro-106-Ser substitution found in the EPSPS gene. These reports show the innate tolerance to glyphosate of C. barbata and C. ciliata, and confirm the resistance of C. elata to this herbicide, showing that both non-target site and target-site mechanisms are involved in its resistance to glyphosate. This is the first case of herbicide resistance in Cuba.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 19 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 19 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 5 26%
Professor 3 16%
Student > Master 3 16%
Student > Ph. D. Student 3 16%
Librarian 2 11%
Other 3 16%
Readers by discipline Count As %
Agricultural and Biological Sciences 11 58%
Arts and Humanities 2 11%
Biochemistry, Genetics and Molecular Biology 1 5%
Psychology 1 5%
Unknown 4 21%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 21 December 2017.
All research outputs
#20,454,971
of 23,011,300 outputs
Outputs from Frontiers in Plant Science
#16,393
of 20,507 outputs
Outputs of similar age
#283,174
of 324,977 outputs
Outputs of similar age from Frontiers in Plant Science
#367
of 434 outputs
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We're also able to compare this research output to 434 others from the same source and published within six weeks on either side of this one. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.