Bacillus megaterium strains derived from water and soil exhibit differential responses to the herbicide mesotrione.
The intense use of herbicides for weed control in agriculture causes selection pressure on soil microbiota and water ecosystems, possibly resulting in changes to microbial processes, such as biogeochemical cycles. These xenobiotics may increase the production of reactive oxygen species and consequen...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2018-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC5918998?pdf=render |
| _version_ | 1819045800494235648 |
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| author | Tatiane Dobrzanski Fernanda Gravina Bruna Steckling Luiz R Olchanheski Ricardo F Sprenger Bruno C Espírito Santo Carolina W Galvão Péricles M Reche Rosilene A Prestes Sônia A V Pileggi Francinete R Campos Ricardo A Azevedo Michael J Sadowsky Flávio L Beltrame Marcos Pileggi |
| author_facet | Tatiane Dobrzanski Fernanda Gravina Bruna Steckling Luiz R Olchanheski Ricardo F Sprenger Bruno C Espírito Santo Carolina W Galvão Péricles M Reche Rosilene A Prestes Sônia A V Pileggi Francinete R Campos Ricardo A Azevedo Michael J Sadowsky Flávio L Beltrame Marcos Pileggi |
| author_sort | Tatiane Dobrzanski |
| collection | DOAJ |
| description | The intense use of herbicides for weed control in agriculture causes selection pressure on soil microbiota and water ecosystems, possibly resulting in changes to microbial processes, such as biogeochemical cycles. These xenobiotics may increase the production of reactive oxygen species and consequently affect the survival of microorganisms, which need to develop strategies to adapt to these conditions and maintain their ecological functionality. This study analyzed the adaptive responses of bacterial isolates belonging to the same species, originating from two different environments (water and soil), and subjected to selection pressure by herbicides. The effects of herbicide Callisto and its active ingredient, mesotrione, induced different adaptation strategies on the cellular, enzymatic, and structural systems of two Bacillus megaterium isolates obtained from these environments. The lipid saturation patterns observed may have affected membrane permeability in response to this herbicide. Moreover, this may have led to different levels of responses involving superoxide dismutase and catalase activities, and enzyme polymorphisms. Due to these response systems, the strain isolated from water exhibited higher growth rates than did the soil strain, in evaluations made in oligotrophic culture media, which would be more like that found in semi-pristine aquatic environments. The influence of the intracellular oxidizing environments, which changed the mode of degradation of mesotrione in our experimental model and produced different metabolites, can also be observed in soil and water at sites related to agriculture. Since the different metabolites may present different levels of toxicity, we suggest that this fact should be considered in studies on the fate of agrochemicals in different environments. |
| first_indexed | 2024-12-21T10:34:20Z |
| format | Article |
| id | doaj.art-cda9bea461b34c879f4c437feef49d70 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-21T10:34:20Z |
| publishDate | 2018-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-cda9bea461b34c879f4c437feef49d702022-12-21T19:07:08ZengPublic Library of Science (PLoS)PLoS ONE1932-62032018-01-01134e019616610.1371/journal.pone.0196166Bacillus megaterium strains derived from water and soil exhibit differential responses to the herbicide mesotrione.Tatiane DobrzanskiFernanda GravinaBruna StecklingLuiz R OlchanheskiRicardo F SprengerBruno C Espírito SantoCarolina W GalvãoPéricles M RecheRosilene A PrestesSônia A V PileggiFrancinete R CamposRicardo A AzevedoMichael J SadowskyFlávio L BeltrameMarcos PileggiThe intense use of herbicides for weed control in agriculture causes selection pressure on soil microbiota and water ecosystems, possibly resulting in changes to microbial processes, such as biogeochemical cycles. These xenobiotics may increase the production of reactive oxygen species and consequently affect the survival of microorganisms, which need to develop strategies to adapt to these conditions and maintain their ecological functionality. This study analyzed the adaptive responses of bacterial isolates belonging to the same species, originating from two different environments (water and soil), and subjected to selection pressure by herbicides. The effects of herbicide Callisto and its active ingredient, mesotrione, induced different adaptation strategies on the cellular, enzymatic, and structural systems of two Bacillus megaterium isolates obtained from these environments. The lipid saturation patterns observed may have affected membrane permeability in response to this herbicide. Moreover, this may have led to different levels of responses involving superoxide dismutase and catalase activities, and enzyme polymorphisms. Due to these response systems, the strain isolated from water exhibited higher growth rates than did the soil strain, in evaluations made in oligotrophic culture media, which would be more like that found in semi-pristine aquatic environments. The influence of the intracellular oxidizing environments, which changed the mode of degradation of mesotrione in our experimental model and produced different metabolites, can also be observed in soil and water at sites related to agriculture. Since the different metabolites may present different levels of toxicity, we suggest that this fact should be considered in studies on the fate of agrochemicals in different environments.http://europepmc.org/articles/PMC5918998?pdf=render |
| spellingShingle | Tatiane Dobrzanski Fernanda Gravina Bruna Steckling Luiz R Olchanheski Ricardo F Sprenger Bruno C Espírito Santo Carolina W Galvão Péricles M Reche Rosilene A Prestes Sônia A V Pileggi Francinete R Campos Ricardo A Azevedo Michael J Sadowsky Flávio L Beltrame Marcos Pileggi Bacillus megaterium strains derived from water and soil exhibit differential responses to the herbicide mesotrione. PLoS ONE |
| title | Bacillus megaterium strains derived from water and soil exhibit differential responses to the herbicide mesotrione. |
| title_full | Bacillus megaterium strains derived from water and soil exhibit differential responses to the herbicide mesotrione. |
| title_fullStr | Bacillus megaterium strains derived from water and soil exhibit differential responses to the herbicide mesotrione. |
| title_full_unstemmed | Bacillus megaterium strains derived from water and soil exhibit differential responses to the herbicide mesotrione. |
| title_short | Bacillus megaterium strains derived from water and soil exhibit differential responses to the herbicide mesotrione. |
| title_sort | bacillus megaterium strains derived from water and soil exhibit differential responses to the herbicide mesotrione |
| url | http://europepmc.org/articles/PMC5918998?pdf=render |
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