Differences in metabolism of three Conyza species to herbicides glyphosate and triclopyr revealed by LC-MS/MS

ABSTRACT Conyza spp. are among the most common weeds found in perennial crops, and resistance to several herbicides has already occurred worldwide. In the present study, pot and laboratory experiments were conducted to evaluate differences in glyphosate and triclopyr susceptibility between different...

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Autores principales:	Anagnostopoulos,Christos, Stasinopoulou,Panagiota, Kanatas,Panagiotis, Travlos,Ilias
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2020
Materias:	Conyza spp. glyphosate herbicide resistance LC-MS/MS triclopyr
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392020000100100
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spelling	oai:scielo:S0718-583920200001001002020-02-25Differences in metabolism of three Conyza species to herbicides glyphosate and triclopyr revealed by LC-MS/MSAnagnostopoulos,ChristosStasinopoulou,PanagiotaKanatas,PanagiotisTravlos,Ilias Conyza spp. glyphosate herbicide resistance LC-MS/MS triclopyr ABSTRACT Conyza spp. are among the most common weeds found in perennial crops, and resistance to several herbicides has already occurred worldwide. In the present study, pot and laboratory experiments were conducted to evaluate differences in glyphosate and triclopyr susceptibility between different biotypes of Conyza spp. Plant material was obtained from seeds collected in perennial crops in Greece. Seeds of four Conyza spp. biotypes were sown in separate pots and treated with glyphosate at the rosette stage, while seeds of six different Conyza spp. biotypes were sown and treated with triclopyr. Twenty-four hours after the herbicide treatment, the aboveground part of the weeds was manually collected and plant samples were prepared to determine the analytes with LC-MS/MS. In two C. bonariensis biotypes, the glyphosate concentration was 50% to 52% lower than for other biotypes; therefore, they could be considered as potentially resistant to glyphosate because the resistant biotype had a stronger and faster metabolism than the sensitive biotype, transforming glyphosate into non-toxic metabolites. The higher glyphosate concentration was detected in C. canadensis biotypes, which proved to be potentially susceptible to glyphosate. Three C. bonariensis biotypes and one C. albida biotype were less susceptible to triclopyr because analytes were detected in 63% to 82% higher concentrations than the two C. canadensis biotypesthat were susceptible to triclopyr. These results reveal significant differences between the three species, confirm the problem of herbicide resistance, and suggest that glyphosate and triclopyr efficacy in Conyza spp. is merely due to herbicide metabolism to other compounds.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.80 n.1 20202020-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392020000100100en10.4067/S0718-58392020000100100
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Conyza spp. glyphosate herbicide resistance LC-MS/MS triclopyr
spellingShingle	Conyza spp. glyphosate herbicide resistance LC-MS/MS triclopyr Anagnostopoulos,Christos Stasinopoulou,Panagiota Kanatas,Panagiotis Travlos,Ilias Differences in metabolism of three Conyza species to herbicides glyphosate and triclopyr revealed by LC-MS/MS
description	ABSTRACT Conyza spp. are among the most common weeds found in perennial crops, and resistance to several herbicides has already occurred worldwide. In the present study, pot and laboratory experiments were conducted to evaluate differences in glyphosate and triclopyr susceptibility between different biotypes of Conyza spp. Plant material was obtained from seeds collected in perennial crops in Greece. Seeds of four Conyza spp. biotypes were sown in separate pots and treated with glyphosate at the rosette stage, while seeds of six different Conyza spp. biotypes were sown and treated with triclopyr. Twenty-four hours after the herbicide treatment, the aboveground part of the weeds was manually collected and plant samples were prepared to determine the analytes with LC-MS/MS. In two C. bonariensis biotypes, the glyphosate concentration was 50% to 52% lower than for other biotypes; therefore, they could be considered as potentially resistant to glyphosate because the resistant biotype had a stronger and faster metabolism than the sensitive biotype, transforming glyphosate into non-toxic metabolites. The higher glyphosate concentration was detected in C. canadensis biotypes, which proved to be potentially susceptible to glyphosate. Three C. bonariensis biotypes and one C. albida biotype were less susceptible to triclopyr because analytes were detected in 63% to 82% higher concentrations than the two C. canadensis biotypesthat were susceptible to triclopyr. These results reveal significant differences between the three species, confirm the problem of herbicide resistance, and suggest that glyphosate and triclopyr efficacy in Conyza spp. is merely due to herbicide metabolism to other compounds.
author	Anagnostopoulos,Christos Stasinopoulou,Panagiota Kanatas,Panagiotis Travlos,Ilias
author_facet	Anagnostopoulos,Christos Stasinopoulou,Panagiota Kanatas,Panagiotis Travlos,Ilias
author_sort	Anagnostopoulos,Christos
title	Differences in metabolism of three Conyza species to herbicides glyphosate and triclopyr revealed by LC-MS/MS
title_short	Differences in metabolism of three Conyza species to herbicides glyphosate and triclopyr revealed by LC-MS/MS
title_full	Differences in metabolism of three Conyza species to herbicides glyphosate and triclopyr revealed by LC-MS/MS
title_fullStr	Differences in metabolism of three Conyza species to herbicides glyphosate and triclopyr revealed by LC-MS/MS
title_full_unstemmed	Differences in metabolism of three Conyza species to herbicides glyphosate and triclopyr revealed by LC-MS/MS
title_sort	differences in metabolism of three conyza species to herbicides glyphosate and triclopyr revealed by lc-ms/ms
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392020000100100
work_keys_str_mv	AT anagnostopouloschristos differencesinmetabolismofthreeconyzaspeciestoherbicidesglyphosateandtriclopyrrevealedbylcmsms AT stasinopouloupanagiota differencesinmetabolismofthreeconyzaspeciestoherbicidesglyphosateandtriclopyrrevealedbylcmsms AT kanataspanagiotis differencesinmetabolismofthreeconyzaspeciestoherbicidesglyphosateandtriclopyrrevealedbylcmsms AT travlosilias differencesinmetabolismofthreeconyzaspeciestoherbicidesglyphosateandtriclopyrrevealedbylcmsms
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Differences in metabolism of three Conyza species to herbicides glyphosate and triclopyr revealed by LC-MS/MS

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