Assessment of microbial community function and structure in soil microcosms exposed to glyphosate

Zabaloy, María Celina; Gómez, Emma Laura Alfaro; Garland, Jay L.; Gómez, M. A.

doi:10.1016/j.apsoil.2011.12.004

Cited by 85 publications

(54 citation statements)

References 34 publications

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“…, ; Krzysko‐Lupicka and Sudol ; Zabaloy et al . ), the stimulation of growth rate observed suggests that the glyphosate may be utilized mainly either as carbon or as energy source.…”

Section: Discussionmentioning

confidence: 93%

Survey of Aspergillus section Flavi presence in agricultural soils and effect of glyphosate on nontoxigenic A. flavus growth on soil-based medium

et al. 2014

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Aims: To evaluate the cultivable mycobiota from agricultural soils exposed to pesticides, the aflatoxigenic capacity of Aspergillus section Flavi strains and the effect of glyphosate on lag phase and growth rates of native nontoxigenic Aspergillus flavus under different water potential (MPa) conditions on soilbased medium. Methods and Results: Culturable mycobiota analysis from different agricultural soils was performed by the surface spread method. The effect of glyphosate (0-20 mmol l À1 ) on the growth of A. flavus strains was evaluated on a soil extract solid medium. Mycobiota analysis of crop soils showed the presence of twenty-one genera of filamentous fungi. Aspergillus flavus and Aspergillus niger aggregate strains were isolated from the three soil types. Ninety-two per cent of A. flavus strains were toxigenic. In vitro assay results showed that at À0Á70 MPa, a significant increase in growth rate in all strains was recorded at 5 and 20 mmol l À1 of glyphosate. At À2Á78 MPa, this parameter remained constant at all glyphosate concentrations, except in GM4 strain where an increase in growth rate was recorded with increasing pesticide concentrations. At À7Á06 MPa, a significant increase in growth rate has also been observed in GM 3 strain with 5 mmol l À1 and in GM 4 strain with 10 and 20 mmol l À1 . Conclusions: This study showed that the imperfecti fungi Aspergillus spp., Penicillium spp., Trichoderma spp., Cladosporium spp. and Paecilomyces spp. are isolated as prevalent groups in agricultural soil exposed to pesticides, and the capacity of nontoxigenic A. flavus strains to tolerate different glyphosate concentrations under different water potential (MPa) conditions. Significance and Impact of the Study: This manuscript makes a contribution to the knowledge of cultivable fungal populations from agricultural soils exposed to pesticides and the glyphosate tolerance of A. flavus strains.

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“…, ; Krzysko‐Lupicka and Sudol ; Zabaloy et al . ), the stimulation of growth rate observed suggests that the glyphosate may be utilized mainly either as carbon or as energy source.…”

Section: Discussionmentioning

confidence: 93%

Survey of Aspergillus section Flavi presence in agricultural soils and effect of glyphosate on nontoxigenic A. flavus growth on soil-based medium

et al. 2014

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“…Many reports showed that insecticides also can alter ecosystems through concentrating along food chain (Stephenson et al 2006). Insecticides are often found in crop, food, soils, and water, and the large amount of insecticide application often leads to insecticide residues in soils, which can affect the soil microbial community by changing their number, microbial activity, and diversity (Zhang et al 2010(Zhang et al , 2014Zabaloy et al 2012;Cycon et al 2013;Cai et al 2015a).…”

Section: Introductionmentioning

confidence: 99%

Impact of the novel neonicotinoid insecticide Paichongding on bacterial communities in yellow loam and Huangshi soils

Cai

Wang

et al. 2015

Environ Sci Pollut Res

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Insecticides are widely sprayed in modern agriculture for ensuring the crop yield, which could also lead to contamination and insecticide residue in soils. Paichongding (IPP) is a novel neonicotinoid insecticide and was developed recently in China. Soil bacterial community, diversity, and community composition vary widely depending on environmental factors. As for now, little is known about bacterial species thriving, bacterial community diversity, and structure in IPP-spraying soils. In present study, IPP degradation in yellow loam and Huangshi soils was investigated, and bacterial communities and diversity were examined in soil without IPP spray and with IPP spray through pyrosequencing of 16S ribosomal RNA (rRNA) gene amplicons. The degradation ratio of IPP at 60 days after treatment (DAT) reached 51.22 and 34.01 % in yellow loam and Huangshi soil, respectively. A higher richness of operational taxonomic units (OTUs) was found in yellow loam soil (867 OTUs) and Huangshi soil (762 OTUs) without IPP spray while OUTs were relatively low in IPP-spraying soils. The community composition also differed both in phyla and genus level between these two environmental conditions. Proteobacteria, Firmicutes, Planctomycetes, Chloroflexi, Armatimonadetes, and Chlorobi were stimulated to increase after IPP application, while IPP inhibited the phyla of Bacteroidetes, Actinobacteria, and Acidobacteria.

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“…In a similar agronomic context, a similar shift in catabolic profiles was observed after glyphosate‐based herbicide addition by Zabaloy et al . () who related those differences to less efficient C‐substrate utilization probably due to the deleterious effect of glyphosate on microbial communities.…”

Section: Discussionmentioning

confidence: 99%

Olive mill waste and glyphosate‐based herbicide addition to olive grove soils: effects on microbial activities and their responses to drying–rewetting cycles

Boukhdoud

Silva

Darwish

et al. 2017

Soil Use and Management

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The objective of this experimental study was to determine the effect of agronomic practices usually implemented in olive groves (addition of olive mill waste and herbicides) on soil microbial communities and to test whether drought enhanced such effects. For that purpose, mesocosms containing soil cores from olive groves were incubated for 5 months under either of the three treatments: (i) addition of olive mill waste (OMW), (ii) addition of glyphosate‐based herbicide (Gly treatment) and (iii) both treatments. Half of the mesocosms were subjected or not (controls) to drying–rewetting cycles (D/Rw) for 1 month (1 D/Rw) or 3 months (3 D/Rw). In the controls, 2 months after the Gly treatment, higher lipase activities were observed compared with no practice treatment as well as a significant change in catabolic profiles of cultivable microbial communities. Three months later, lipase activities significantly decreased under the Gly treatment. Addition of OMW together with Gly treatment counteracted the negative effect of the herbicide on lipase activities. After three D/Rw cycles, Gly treatment modified catabolic profiles and induced a decrease in functional diversity. Overall, the combination of glyphosate‐based herbicide with OMW was a conservative practice that maintained soil functioning and led to a better response to D/Rw cycles.

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Assessment of microbial community function and structure in soil microcosms exposed to glyphosate

Cited by 85 publications

References 34 publications

Survey of Aspergillus section Flavi presence in agricultural soils and effect of glyphosate on nontoxigenic A. flavus growth on soil-based medium

Survey of Aspergillus section Flavi presence in agricultural soils and effect of glyphosate on nontoxigenic A. flavus growth on soil-based medium

Impact of the novel neonicotinoid insecticide Paichongding on bacterial communities in yellow loam and Huangshi soils

Olive mill waste and glyphosate‐based herbicide addition to olive grove soils: effects on microbial activities and their responses to drying–rewetting cycles

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