Glyphosate, but not its metabolite AMPA, alters the honeybee gut microbiota.

The honeybee (Apis mellifera) has to cope with multiple environmental stressors, especially pesticides. Among those, the herbicide glyphosate and its main metabolite, the aminomethylphosphonic acid (AMPA), are among the most abundant and ubiquitous contaminant in the environment. Through the foragin...

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Main Authors: Nicolas Blot, Loïs Veillat, Régis Rouzé, Hélène Delatte
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2019-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0215466
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author Nicolas Blot
Loïs Veillat
Régis Rouzé
Hélène Delatte
author_facet Nicolas Blot
Loïs Veillat
Régis Rouzé
Hélène Delatte
author_sort Nicolas Blot
collection DOAJ
description The honeybee (Apis mellifera) has to cope with multiple environmental stressors, especially pesticides. Among those, the herbicide glyphosate and its main metabolite, the aminomethylphosphonic acid (AMPA), are among the most abundant and ubiquitous contaminant in the environment. Through the foraging and storing of contaminated resources, honeybees are exposed to these xenobiotics. As ingested glyphosate and AMPA are directly in contact with the honeybee gut microbiota, we used quantitative PCR to test whether they could induce significant changes in the relative abundance of the major gut bacterial taxa. Glyphosate induced a strong decrease in Snodgrassella alvi, a partial decrease of a Gilliamella apicola and an increase in Lactobacillus spp. abundances. In vitro, glyphosate reduced the growth of S. alvi and G. apicola but not Lactobacillus kunkeei. Although being no bee killer, we confirmed that glyphosate can have sublethal effects on the honeybee microbiota. To test whether such imbalanced microbiota could favor pathogen development, honeybees were exposed to glyphosate and to spores of the intestinal parasite Nosema ceranae. Glyphosate did not significantly enhance the effect of the parasite infection. Concerning AMPA, while it could reduce the growth of G. apicola in vitro, it did not induce any significant change in the honeybee microbiota, suggesting that glyphosate is the active component modifying the gut communities.
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spelling doaj.art-4f15385273fc4c6fa8fab98fb4a8f2ba2023-12-23T05:34:15ZengPublic Library of Science (PLoS)PLoS ONE1932-62032019-01-01144e021546610.1371/journal.pone.0215466Glyphosate, but not its metabolite AMPA, alters the honeybee gut microbiota.Nicolas BlotLoïs VeillatRégis RouzéHélène DelatteThe honeybee (Apis mellifera) has to cope with multiple environmental stressors, especially pesticides. Among those, the herbicide glyphosate and its main metabolite, the aminomethylphosphonic acid (AMPA), are among the most abundant and ubiquitous contaminant in the environment. Through the foraging and storing of contaminated resources, honeybees are exposed to these xenobiotics. As ingested glyphosate and AMPA are directly in contact with the honeybee gut microbiota, we used quantitative PCR to test whether they could induce significant changes in the relative abundance of the major gut bacterial taxa. Glyphosate induced a strong decrease in Snodgrassella alvi, a partial decrease of a Gilliamella apicola and an increase in Lactobacillus spp. abundances. In vitro, glyphosate reduced the growth of S. alvi and G. apicola but not Lactobacillus kunkeei. Although being no bee killer, we confirmed that glyphosate can have sublethal effects on the honeybee microbiota. To test whether such imbalanced microbiota could favor pathogen development, honeybees were exposed to glyphosate and to spores of the intestinal parasite Nosema ceranae. Glyphosate did not significantly enhance the effect of the parasite infection. Concerning AMPA, while it could reduce the growth of G. apicola in vitro, it did not induce any significant change in the honeybee microbiota, suggesting that glyphosate is the active component modifying the gut communities.https://doi.org/10.1371/journal.pone.0215466
spellingShingle Nicolas Blot
Loïs Veillat
Régis Rouzé
Hélène Delatte
Glyphosate, but not its metabolite AMPA, alters the honeybee gut microbiota.
PLoS ONE
title Glyphosate, but not its metabolite AMPA, alters the honeybee gut microbiota.
title_full Glyphosate, but not its metabolite AMPA, alters the honeybee gut microbiota.
title_fullStr Glyphosate, but not its metabolite AMPA, alters the honeybee gut microbiota.
title_full_unstemmed Glyphosate, but not its metabolite AMPA, alters the honeybee gut microbiota.
title_short Glyphosate, but not its metabolite AMPA, alters the honeybee gut microbiota.
title_sort glyphosate but not its metabolite ampa alters the honeybee gut microbiota
url https://doi.org/10.1371/journal.pone.0215466
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