A Study of<i>Aspergillus flavus/parasiticus</i>in Iowa Crop Fields: 1988–1990

Shearer, Judy F.; Sweets, Laura; Baker, Nardia; Tiffany, L. H.

doi:10.1094/pd-76-0019

Cited by 47 publications

(29 citation statements)

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“…Environmental conditions conducive to mycotoxin producing fungi vary. A. flavus competes poorly under cool conditions and the prevalence of A. flavus is higher in warmer environments (above 25°C) compared to cooler environments (20 -- 25 °C) (Shearer et al, 1992). The er A. flavus are associated with hot and --ecological zones with latitudinal shifts in climate influencing fungal community structure (Cardwell & Cotty, 2002).…”

Section: Plant Diseasesmentioning

confidence: 99%

Maize Production in a Changing Climate

Cairns

Sonder

Zaidi

et al. 2012

Advances in Agronomy

226

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Section: Plant Diseasesmentioning

confidence: 99%

Maize Production in a Changing Climate

Cairns

Sonder

Zaidi

et al. 2012

Advances in Agronomy

226

View full text Add to dashboard Cite

“…Field, greenhouse and controlled environment studies have shown that high temperatures favour infection of maize with A. flavus and contribute to high concentrations of aflatoxins (Jones et al, 1980;Payne et al, 1985;Shearer et al, 1992). In controlled environment studies, Payne et al (1988) showed a striking effect of temperature on infection of maize kernels after inoculation of the silks with conidia of A. flavus.…”

mentioning

confidence: 99%

“…Shearer (1992) found soil populations of A. flavus in Iowa in 1988 (the worst year for recorded aflatoxin contamination in the Midwest) to average 1,200 colony forming units (cfu)/g following harvest. These populations, however, dropped to 700 and 396 cfu/g by 1989 and 1990, respectively, and to 14 cfu/g in 1991 and 0.3 cfu/g by 1993 (McGee et al, 1996).…”

mentioning

confidence: 99%

Climate change impacts on mycotoxin risks in US maize

Bhatnagar

Bui-Klimke

et al. 2011

WMJ

144

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To ensure future food security, it is crucial to understand how potential climate change scenarios will affect agriculture. One key area of interest is how climatic factors, both in the near- and the long-term future, could affect fungal infection of crops and mycotoxin production by these fungi. The objective of this paper is to review the potential impact of climate change on three important mycotoxins that contaminate maize in the United States, and to highlight key research questions and approaches for understanding this impact. Recent climate change analyses that pertain to agriculture and in particular to mycotoxigenic fungi are discussed, with respect to the climatic factors – temperature and relative humidity – at which they thrive and cause severe damage. Additionally, we discuss how climate change will likely alter the life cycles and geographic distribution of insects that are known to facilitate fungal infection of crops.

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“…These results are in [17]. The presence of A. parasiticus has been reported for decades in several countries, especially in America and Asia [30][31][32][33], and recently it was detected in wheat in Slovakia [34], and in indoor air in Croatia [35]. However, regarding the appearance of A. parasiticus in maize, it is the first data from Central Europe.…”

Section: Discussionmentioning

confidence: 84%

Aflatoxigenic Aspergillus flavus and Aspergillus parasiticus strains in Hungarian maize fields

Sebők¹,

Dobolyi²,

Zágoni³

et al. 2016

Acta Microbiologica et Immunologica Hungarica

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Due to the climate change, aflatoxigenic Aspergillus species and strains have appeared in several European countries, contaminating different agricultural commodities with aflatoxin. Our aim was to screen the presence of aflatoxigenic fungi in maize fields throughout the seven geographic regions of Hungary. Fungi belonging to Aspergillus section Flavi were isolated in the ratio of 26.9% and 42.3% from soil and maize samples in 2013, and these ratios decreased to 16.1% and 34.7% in 2014. Based on morphological characteristics and the sequence analysis of the partial calmodulin gene, all isolates proved to be Aspergillus flavus, except four strains, which were identified as Aspergillus parasiticus. About half of the A. flavus strains and all the A. parasiticus strains were able to synthesize aflatoxins. Aflatoxigenic Aspergillus strains were isolated from all the seven regions of Hungary. A. parasiticus strains were found in the soil of the regions Southern Great Plain and Southern Transdanubia and in a maize sample of the region Western Transdanubia. In spite of the fact that aflatoxins have rarely been detected in feeds and foods in Hungary, aflatoxigenic A. flavus and A. parasiticus strains are present in the maize culture throughout Hungary posing a potential threat to food safety.

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A Study ofAspergillus flavus/parasiticusin Iowa Crop Fields: 1988–1990

Cited by 47 publications

References 0 publications

Maize Production in a Changing Climate

Maize Production in a Changing Climate

Climate change impacts on mycotoxin risks in US maize

Aflatoxigenic Aspergillus flavus and Aspergillus parasiticus strains in Hungarian maize fields

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