Influence of herbicide glyphosate on growth and aflatoxin B1production byAspergillussectionFlavistrains isolated from soil onin vitroassay

Barberis, Carla Lorena; Carranza, Cecilia Soledad; Chiacchiera, Stella Maris; Magnoli, Carina Elizabeth

doi:10.1080/03601234.2013.824223

Cited by 18 publications

(16 citation statements)

References 59 publications

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“…These results are comparable to those found previously by Barberis et al . (), who showed in toxigenic A. flavus strains, a significant increase in growth rate from 0·5 mmol l −1 of glyphosate only at water activity conditions ( a W ) of 0·93 and 0·95; while at 0·98 a W , a significant increase in this parameter was also observed at 0·5, 1·0 and 1·5 mmol l −1 depending on the strains evaluated. Other authors, Reddy et al .…”

Section: Discussionmentioning

confidence: 92%

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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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Section: Discussionmentioning

confidence: 92%

“…Similar results were reported by Barberis et al . () with toxigenic Aspergillus section Flavi strains isolated from soils on maize‐based medium. These authors showed that all the A. flavus strains showed the same behaviour pattern at different conditions tested, the lag phase decreased as glyphosate concentration increased.…”

Section: Discussionmentioning

confidence: 99%

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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“…According to Adegoke and Letuma (2013), to adopt mechanisms to control mycotoxins, it is essential to have (Barberis et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

Production technology and quality of corn silage for feeding dairy cattle in Southern Brazil

Silva

Jobim

Poppi³

et al. 2015

R. Bras. Zootec.

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-The objective of this study was to evaluate the production practices and use of corn silage in dairy farms in Southern Brazil, and to evaluate their impact on the nutritional quality and occurrence of mycotoxins. The data were collected by application of questionnaires among the producers, and by analysis of silage samples. The variables were subjected to factorial analysis of data reduction through the principal components method, thus obtaining 84.12% of the variance associated with the location, corn hybrid, crop production management, and inoculant used, characterizing the farms into four distinct groups. In farms from Paraná, the silage production technologies were more associated with implantation and crop management processes, and investment in equipment related to ensilage/silo feed-out was less frequent. Farms of Rio Grande do Sul showed high adoption of outsourced services, self-propelled machines, bunker silos, double-sided plastic film, and inoculant to control aerobic deterioration, and the silages showed higher levels of propionic acid (7.95 g/kg DM), and lower concentrations of aflatoxins (7.7 ppb) and total mycotoxins (26.58 ppb). The farms evaluated in Southern Brazil have good production efficiency and corn silages with excellent quality, regardless of their production characteristics.

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“…Since gly-pro is a very common sequence in collagen, glyphosate-pro is likely to impede the breakdown of collagen fragments, which may then encourage Aspergillus infection in both plants and animals. Glyphosate has been shown to increase the growth rate of Aspergillus [71].…”

Section: Glyphosate-contaminated Collagen and Proteolysis Resistancementioning

confidence: 99%

Glyphosate pathways to modern diseases VI: Prions, amyloidoses and autoimmune neurological diseases

Samsel¹,

Seneff²

2017

JBPC

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Influence of herbicide glyphosate on growth and aflatoxin B₁production byAspergillussectionFlavistrains isolated from soil onin vitroassay

Cited by 18 publications

References 59 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

Production technology and quality of corn silage for feeding dairy cattle in Southern Brazil

Glyphosate pathways to modern diseases VI: Prions, amyloidoses and autoimmune neurological diseases

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