Influence of the pesticides glyphosate, chlorpyrifos and atrazine on growth parameters of nonochratoxigenic<i>Aspergillus</i>section<i>Nigri</i>strains isolated from agricultural soils

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

doi:10.1080/03601234.2014.929860

Cited by 18 publications

(8 citation statements)

References 51 publications

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“…Xenobiotic compounds, such as pesticides, also have a considerable effect on fungal development. Previous studies have shown significant changes on both growth rate and mycotoxin production of Aspergillus species caused by GP …”

Section: Introductionmentioning

confidence: 99%

Effect of in vitro glyphosate on Fusarium spp. growth and disease severity in maize

et al. 2019

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BACKGROUND Glyphosate (GP) is one of the main pesticides used for maize production. Fusarium sp. is a fungal genus with several phytopathogenic species and toxigenic features. In this study, the culturable soil mycota was evaluated using the surface‐spray method. The effect of GP on the growth parameters (growth rate and lag phase) of Fusarium spp. was also tested on solid media conditioned with different water activities. Finally, the GP effect on disease severity caused by Fusarium sp. in maize seedlings was studied. RESULTS The results showed that Fusarium species are frequently isolated from GP‐exposed soils. The GP concentrations tested had a significant effect on F. graminearum, F. verticillioides and F. oxysporum growth parameters on solid media. The pathogenicity tests showed that the disease severity of the maize seedlings significantly increased with increasing GP concentrations. CONCLUSIONS This study showed that Fusarium species are frequently isolated from pesticide‐exposed soils and the GP concentrations tested had a significant effect both on growth parameters and disease severity in maize. This study provides an approach to the effect of GP on Fusarium sp. growth and pathogenicity that reinforces the importance of evaluating all the factors that could affect feed and food production. © 2019 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Effect of in vitro glyphosate on Fusarium spp. growth and disease severity in maize

et al. 2019

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“…Carranza et al [48] described a difference among various strains of Aspergillus in an ability of growth in the presence of the chlorpyrifos. Thus, insecticide-fungal relations are not exactly defined, and they should be considered strain by strain.…”

Section: Discussionmentioning

confidence: 99%

Effect of Dursban 480 EC (chlorpyrifos) and Talstar 10 EC (bifenthrin) on the physiological and genetic diversity of microorganisms in soil

Medo

Maková

Kovácsová

et al. 2015

Journal of Environmental Science and Health, Part B

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This investigation was undertaken to determine the impact of the insecticides Dursban 480 EC (with organophosphate compound chlorpyrifos as the active ingredient) and Talstar 10 EC (with pyrethroid bifenthrin as the active ingredient) on the respiration activity and microbial diversity in a sandy loam luvisol soil. The insecticides were applied in two doses: the maximum recommended dose for field application (15 mg kg(-1) for Dursban 480 EC and 6 mg kg(-1) for Talstar 10 EC) and a 100-fold higher dose for extrapolation of their effect. Bacterial and fungal genetic diversity was analysed in soil samples using PCR DGGE and the functional diversity (catabolic potential) was studied using BIOLOG EcoPlates at 1, 3, 7, 14, 28, 56 and 112 days after insecticide application. Five bacterial groups (α, β, γ proteobacteria, firmibacteria and actinomycetes) and five groups of fungi or fungus-like microorganisms (Ascomycota, Basidiomycota, Chytridiomycota, Oomycota and Zygomycota) were analysed using specific primer sets. This approach provides high resolution of the analysis covering majority of microorganisms in the soil. Only the high-dose Dursban 480 EC significantly changed the community of microorganisms. We observed its negative effect on α- and γ-proteobacteria, as the number of OTUs (operational taxonomic units) decreased until the end of incubation. In the β-proteobacteria group, initial increase of OTUs was followed by strong decrease. Diversity in the firmibacteria, actinomycetes and Zygomycota groups was minimally disturbed by the insecticide application. Dursban 480 EC, however, both positively and negatively affected certain species. Among negatively affected species Sphingomonas, Flavobacterium or Penicillium were detected, but Achromobacter, Luteibacter or Aspergillus were supported by applied insecticide. The analysis of BIOLOG plates using AWCD values indicated a significant increase in metabolic potential of microorganisms in the soil after the high-dose Dursban application. Analysis of respiration demonstrated high microbial activity after insecticide treatments; thus, microbial degradation was relatively fast. The half-life of the active insecticide compounds were estimated within the range of 25 to 27 days for Talstar and 6 to 11 days for Dursban and higher doses stimulated degradation. The recommended dose levels of both insecticides can be considered as safe for microbial community in the soil.

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“…Barros et al (2003Barros et al ( , 2005 and Alaniz Zanon et al (2013) also reported that A. flavus was the dominant species, being isolated in 90% of soils samples from peanut fields. Carranza et al (2014), also informed that A. flavus was the most frequent species isolated from fields from the south of Córdoba. The isolation percentages were 87.5%, 50% and 67% from maize, soybean and soybean-maize rotation respectively.…”

Section: Discussionmentioning

confidence: 99%

“…These results partially agree with previous studies, where the first three genera were isolated in high frequency of agricultural soils of the central region of Córdoba followed by Cladosporium sp., Paecilomyces sp. (Carranza et al 2014), Fusarium sp. and Alternaria sp.…”

Section: Discussionmentioning

confidence: 99%

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Native mycota in agricultural soils exposed to pesticides and Aspergillus oryzae tolerance to chlorpyrifos in microcosms assays

Carranza¹

2017

CREAM

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Magnoli CE -Native mycota in agricultural soils exposed to pesticides and Aspergillus oryzae tolerance to chlorpyrifos in microcosms assays. Current Research in Environmental & Applied Mycology 7(3), 236-248, Doi 10.5943/cream/7/3/10 AbstractChlorpyrifos (CPF) constitutes a class of older and riskier pesticides, with more than 50 years of use. After pesticide application, a low percentage reaches the target and the rest remain in the environment. Due to this, bioremediation strategies are being increasingly studied. The aims of the present study were to determine the competitiveness and the permanence of a non-toxigenic, CPFdegrading A. oryzae (AM 1) strain in agricultural soil microcosms. These microcosms were contaminated with commercial formulation of CPF (10, 20 and 50 mM) and conditioned at two water holding capacity (70 and 30 WHC). In addition, Aspergillus section Flavi counts of soils of three localities of southern Córdoba Province were evaluated, due to these soils were used to prepare the microcosms. In the microcosm's assays, together with the native mycota, A. oryzae was isolated from all the treatments and conditions assayed. Thus this strain was able to tolerate the different doses of CPF tested. Regarding the native mycota, Aspergillus sp., Trichoderma sp., Penicillium sp., Cladosporium sp. and Fusarium sp. were the most frequent genera isolated from the microcosms. The CPF treatments influenced in different ways the counts of the most frequent genera isolated. This study allowed knowing the in situ survival, under optimal and not optimal humidity conditions, of a CPF-degrading fungal strain in presence of the native mycota. These results are very important because the permanence in the environment of a potentially bioremediation agent is one of the main characteristic that must be evaluated.

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Influence of the pesticides glyphosate, chlorpyrifos and atrazine on growth parameters of nonochratoxigenicAspergillussectionNigristrains isolated from agricultural soils

Cited by 18 publications

References 51 publications

Effect of in vitro glyphosate on Fusarium spp. growth and disease severity in maize

Effect of in vitro glyphosate on Fusarium spp. growth and disease severity in maize

Effect of Dursban 480 EC (chlorpyrifos) and Talstar 10 EC (bifenthrin) on the physiological and genetic diversity of microorganisms in soil

Native mycota in agricultural soils exposed to pesticides and Aspergillus oryzae tolerance to chlorpyrifos in microcosms assays

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