Bacterial responses to environmental herbicide pollutants (glyphosate and paraquat)
The toxic effect of herbicides on non- target microorganisms may influence degradation of organic matter resulting in changes to nutrient cycling. In the present study, different strains of bacteria incubated in media containing different concentrations of glyphosate and paraquat were assessed ove...
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doaj-00352554f53c4c708120fffef9c43b512020-11-25T02:18:24ZengUniversity of GuilanCaspian Journal of Environmental Sciences 1735-30331735-38662018-03-011613543Bacterial responses to environmental herbicide pollutants (glyphosate and paraquat)Mazhari, M.Ferguson, J.The toxic effect of herbicides on non- target microorganisms may influence degradation of organic matter resulting in changes to nutrient cycling. In the present study, different strains of bacteria incubated in media containing different concentrations of glyphosate and paraquat were assessed over a period of two incubation terms. The deleterious impact of the herbicide was observed as glyphosate and paraquate treatments led to a reduction in the bacterial population. Analysis of the colony- forming unit (CFUs) showed a declining in microbial growth from 0 to 24 hours of incubation in all concentrations of glyphosate followed by a steady declining rate of the bacterial population after 48 h. The greatest bacterial population developed in media containing concentrations of glyphosate and paraquat was observed with strains S13.3, while strains S55 and S35 showed the lowest biomass production in response to all concentrations of glyphosate and paraquat. Based on the results obtained, strain S13.3 was determined to be resistant to the herbicides examined and may be useful for bioremediation of these compounds in soil.https://cjes.guilan.ac.ir/article_2780.htmlParaquatGlyphosateMicrobial biomassMicrobial populationsHerbicides |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Mazhari, M. Ferguson, J. |
spellingShingle |
Mazhari, M. Ferguson, J. Bacterial responses to environmental herbicide pollutants (glyphosate and paraquat) Caspian Journal of Environmental Sciences Paraquat Glyphosate Microbial biomass Microbial populations Herbicides |
author_facet |
Mazhari, M. Ferguson, J. |
author_sort |
Mazhari, M. |
title |
Bacterial responses to environmental herbicide pollutants (glyphosate and paraquat) |
title_short |
Bacterial responses to environmental herbicide pollutants (glyphosate and paraquat) |
title_full |
Bacterial responses to environmental herbicide pollutants (glyphosate and paraquat) |
title_fullStr |
Bacterial responses to environmental herbicide pollutants (glyphosate and paraquat) |
title_full_unstemmed |
Bacterial responses to environmental herbicide pollutants (glyphosate and paraquat) |
title_sort |
bacterial responses to environmental herbicide pollutants (glyphosate and paraquat) |
publisher |
University of Guilan |
series |
Caspian Journal of Environmental Sciences |
issn |
1735-3033 1735-3866 |
publishDate |
2018-03-01 |
description |
The toxic effect of herbicides on non- target microorganisms may influence degradation of organic matter resulting
in changes to nutrient cycling. In the present study, different strains of bacteria incubated in media containing
different concentrations of glyphosate and paraquat were assessed over a period of two incubation terms. The
deleterious impact of the herbicide was observed as glyphosate and paraquate treatments led to a reduction in the
bacterial population. Analysis of the colony- forming unit (CFUs) showed a declining in microbial growth from 0
to 24 hours of incubation in all concentrations of glyphosate followed by a steady declining rate of the bacterial
population after 48 h. The greatest bacterial population developed in media containing concentrations of
glyphosate and paraquat was observed with strains S13.3, while strains S55 and S35 showed the lowest biomass
production in response to all concentrations of glyphosate and paraquat. Based on the results obtained, strain S13.3
was determined to be resistant to the herbicides examined and may be useful for bioremediation of these
compounds in soil. |
topic |
Paraquat Glyphosate Microbial biomass Microbial populations Herbicides |
url |
https://cjes.guilan.ac.ir/article_2780.html |
work_keys_str_mv |
AT mazharim bacterialresponsestoenvironmentalherbicidepollutantsglyphosateandparaquat AT fergusonj bacterialresponsestoenvironmentalherbicidepollutantsglyphosateandparaquat |
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1724882505446719488 |