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Fate and adaptive plasticity of heterogeneous resistant population of Echinochloa colona in response to glyphosate

Understanding the fate of heterogenous herbicide resistant weed populations in response to management practices can help towards overcoming the resistance issues. We selected one pair of susceptible (S) and resistant (R) phenotypes (2B21-R vs 2B21-S and 2B37-R vs 2B37-S) separately from two glyphosa...

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Autores principales: Asaduzzaman, Md, Koetz, Eric, Wu, Hanwen, Hopwood, Michael, Shephard, Adam
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8295337/
https://www.ncbi.nlm.nih.gov/pubmed/34290336
http://dx.doi.org/10.1038/s41598-021-94370-7
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author Asaduzzaman, Md
Koetz, Eric
Wu, Hanwen
Hopwood, Michael
Shephard, Adam
author_facet Asaduzzaman, Md
Koetz, Eric
Wu, Hanwen
Hopwood, Michael
Shephard, Adam
author_sort Asaduzzaman, Md
collection PubMed
description Understanding the fate of heterogenous herbicide resistant weed populations in response to management practices can help towards overcoming the resistance issues. We selected one pair of susceptible (S) and resistant (R) phenotypes (2B21-R vs 2B21-S and 2B37-R vs 2B37-S) separately from two glyphosate resistant heterogeneous populations (2B21 and 2B37) of Echinochloa colona and their fate and adaptive plasticity were evaluated after glyphosate application. Our study revealed the glyphosate concentration required to cause a 50% plant mortality (LD(50)) was 1187, 200, 3064, and 192 g a. e. ha(−1) for the four phenotypes 2B21-R, 2B21-S, 2B37-R, and 2B37-S respectively. Both S phenotypes accumulated more biomass than the R phenotypes at the lower application rates (34 and 67.5 g a. e. ha(−1)) of glyphosate. However, the R phenotypes generally produced more biomass at rates of glyphosate higher than 100 g a. e. ha(−1) throughout the growth period. Plants from the R phenotypes of 2B21 and 2B37 generated 32% and 38% fewer spikes plant(−1) than their respective S counterparts in the absence of glyphosate respectively. The spike and seed numbers plant(-1) significantly higher in R than S phenotypes at increased rates of glyphosate and these relationships were significant. Our research suggests that glyphosate-resistant E. colona plants will be less fit than susceptible plants (from the same population) in the absence of glyphosate. But in the presence of glyphosate, the R plants may eventually dominate in the field. The use of glyphosate is widespread in field, would favour the selection towards resistant individuals.
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spelling pubmed-82953372021-07-22 Fate and adaptive plasticity of heterogeneous resistant population of Echinochloa colona in response to glyphosate Asaduzzaman, Md Koetz, Eric Wu, Hanwen Hopwood, Michael Shephard, Adam Sci Rep Article Understanding the fate of heterogenous herbicide resistant weed populations in response to management practices can help towards overcoming the resistance issues. We selected one pair of susceptible (S) and resistant (R) phenotypes (2B21-R vs 2B21-S and 2B37-R vs 2B37-S) separately from two glyphosate resistant heterogeneous populations (2B21 and 2B37) of Echinochloa colona and their fate and adaptive plasticity were evaluated after glyphosate application. Our study revealed the glyphosate concentration required to cause a 50% plant mortality (LD(50)) was 1187, 200, 3064, and 192 g a. e. ha(−1) for the four phenotypes 2B21-R, 2B21-S, 2B37-R, and 2B37-S respectively. Both S phenotypes accumulated more biomass than the R phenotypes at the lower application rates (34 and 67.5 g a. e. ha(−1)) of glyphosate. However, the R phenotypes generally produced more biomass at rates of glyphosate higher than 100 g a. e. ha(−1) throughout the growth period. Plants from the R phenotypes of 2B21 and 2B37 generated 32% and 38% fewer spikes plant(−1) than their respective S counterparts in the absence of glyphosate respectively. The spike and seed numbers plant(-1) significantly higher in R than S phenotypes at increased rates of glyphosate and these relationships were significant. Our research suggests that glyphosate-resistant E. colona plants will be less fit than susceptible plants (from the same population) in the absence of glyphosate. But in the presence of glyphosate, the R plants may eventually dominate in the field. The use of glyphosate is widespread in field, would favour the selection towards resistant individuals. Nature Publishing Group UK 2021-07-21 /pmc/articles/PMC8295337/ /pubmed/34290336 http://dx.doi.org/10.1038/s41598-021-94370-7 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Asaduzzaman, Md
Koetz, Eric
Wu, Hanwen
Hopwood, Michael
Shephard, Adam
Fate and adaptive plasticity of heterogeneous resistant population of Echinochloa colona in response to glyphosate
title Fate and adaptive plasticity of heterogeneous resistant population of Echinochloa colona in response to glyphosate
title_full Fate and adaptive plasticity of heterogeneous resistant population of Echinochloa colona in response to glyphosate
title_fullStr Fate and adaptive plasticity of heterogeneous resistant population of Echinochloa colona in response to glyphosate
title_full_unstemmed Fate and adaptive plasticity of heterogeneous resistant population of Echinochloa colona in response to glyphosate
title_short Fate and adaptive plasticity of heterogeneous resistant population of Echinochloa colona in response to glyphosate
title_sort fate and adaptive plasticity of heterogeneous resistant population of echinochloa colona in response to glyphosate
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8295337/
https://www.ncbi.nlm.nih.gov/pubmed/34290336
http://dx.doi.org/10.1038/s41598-021-94370-7
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