Climate change impacts on mycotoxin risks in US maize

Wu, Felicia; Bhatnagar, Deepak; Bui-Klimke, Travis R.; Carbone, Ignazio; Hellmich, Richard L.; Munkvold, Gary P.; Paul, Pierce A.; Payne, Gary A.; Takle, Eugene S.

doi:10.3920/wmj2010.1246

Cited by 144 publications

(106 citation statements)

References 115 publications

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“…Also because mycotoxin concentrations show an extremely skewed distribution in foods and feeds, sampling variation across studies is common (Pitt et al, 2012). (Cotty et al, 1994;Wu et al, 2011). It has been suggested that an increase in temperature and rainfall may increase mycotoxin production for stored maize (Magan and Aldred, 2007;Sandris and Magan, 2004).…”

Section: Discussionmentioning

confidence: 99%

A survey of aflatoxin B1 in maize and awareness of aflatoxins in Vietnam

Lee

Nguyen-Viet

Lindahl

et al. 2017

WMJ

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Vietnam is a tropical country with high temperature and precipitation, which may provide good conditions for fungal growth. A few limited studies have been conducted to evaluate the level of aflatoxin B 1 in maize in Vietnam. In addition, no studies have been conducted to evaluate the perception and knowledge of aflatoxins in Vietnam. Therefore, the main objective of this study was to determine the levels of aflatoxin B 1 for human and animal consumption in maize and evaluate perceptions and knowledge of aflatoxins among people across the country. A total of 2,370 samples were collected from six provinces and analysed using ELISA. Among collected samples, 799 samples (33.71%, 95% confidence interval (CI): 31.81-35.66%) and 687 samples (28.98%, 95%CI: 27.17-30.86%) had levels above 2 µg/kg and 5 µg/kg, respectively [range from below limit of detection (LOD) to 34.8 µg/kg; of the samples above LOD, the mean was 13.1 µg/kg and median was 11.2 µg/kg]. A total of 551 people were interviewed from 6 provinces. The survey showed that awareness of aflatoxins (question: Have you heard about aflatoxins?) in southern Vietnam [An Giang (25%), Dak Lak (23.23%) and Dong Nai (6%)] was relatively higher than in provinces in northern Vietnam. We believe that this analysed information can be useful to better understand the epidemiology of aflatoxins in different provinces. This study also produces evidence on potential risk to humans and animals in Vietnam as well as demographic factors (such as gender and level of education) significantly influencing knowledge of aflatoxins. In conclusion, this paper points to the importance of raising the awareness of the risks with aflatoxins, bearing in mind the gender aspect during capacity development.

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Section: Discussionmentioning

confidence: 99%

A survey of aflatoxin B1 in maize and awareness of aflatoxins in Vietnam

Lee

Nguyen-Viet

Lindahl

et al. 2017

WMJ

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“…Although literature reviews on the expected impact from climate change on mycotoxin contamination of cereals and other crops are available (Magan et al, 2011;Marín et al, 2013;Marroquín-Cardona et al, 2014;Medina et al, 2014a,b;Miraglia et al, 2009;Ongoma, 2013;Lima, 2010, 2011;Paterson et al, 2014;Tirado et al, 2010;Wu et al, 2011), a limited number of studies quantitatively estimated these impacts. This study reviewed information from these quantitative studies, identified gaps in knowledge and data, and provided recommendations for future studies.…”

Section: Introductionmentioning

confidence: 99%

Modelling climate change impacts on mycotoxin contamination

Fels‐Klerx

Liu

Battilani

2016

WMJ

117

103

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Projected climate change effects will influence primary agricultural systems and thus food security, directly via impacts on yields, and indirectly via impacts on its safety, with mycotoxins considered as crucial hazards. Mycotoxins are produced by a wide variety of fungal species, each having their own characteristics and requirements. The geographic distribution of toxigenic fungi reflects their ecological needs, with thermophilic fungi prevalent at lower latitudes and psychrophiles at the higher latitudes. A resulting gradient of mycotoxin contamination has been repeatedly stressed. Changes in climatic conditions will lead to shifts in the fungal population and the mycotoxin patterns. In general, climate change is expected to increase mycotoxin contamination of crops, but due to the complexity of mycoflora associated to each crop and its interaction with the environment, it appears rash to draw conclusions without specific studies. Very recently first quantitative estimations of impacts of climate change on mycotoxin occurrence have been made. Two studies each applied models of different disciplines including climate projection, crop phenology and fungal/mycotoxin prediction to cereals cultivated in Europe. They were followed by a case study on climate change effects on Alternaria moulds and their mycotoxins in tomato. Results showed that DON contamination of wheat grown in Europe was, in general, expected to increase. However, variation was large, and in some years and some regions a decrease in DON contamination was expected. Regarding aflatoxin contamination of maize grown in Europe, an increase was estimated, mainly in the +2 °C scenario. Two main research gaps were identified related to the (limited) number of existing quantitative models taking into account climate change and their validation in limited areas. Efforts are therefore mandatory to be prepared for future changes and challenges on model validation and limited mycotoxin-crop combinations.

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“…Sin embargo, los autores sugieren que el uso de líneas con alta resistencia a insectos y otras plagas, así como evitar la cosecha del maíz en etapas finales de desarrollo, puede disminuir el efecto de condiciones ambientales favorables para el desarrollo de fumonisinas y otras micotoxinas similares. Es también sensato tener en cuenta que, muy posiblemente, el cambio climático actual puede favorecer la contaminación con micotoxinas en cereales (Wu et al 2011;Van Asselt et al 2012), en países productores y exportadores, en los que hasta hace algunos años eso no sucedía (Miller 2008).…”

Section: Licencia Creative Commonsunclassified

Presencia de hongos y contaminación con micotoxinas en ensilajes para alimentación de rumiantes. Artículo de Revisión

Solís¹

2016

Ciencias Veterinarias

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Diversos estudios han identificado el crecimiento de hongos en forrajes ensilados para alimentar rumiantes domésticos, capaces de producir toxinas de importancia para la salud pública y animal.<br />El objetivo de esta revisión es recopilar los resultados de diversas investigaciones que identificaron hongos y micotoxinas con riesgo conocido en ensilajes de diversos materiales en varias regiones del mundo utilizados para alimentar rumiantes. En segundo lugar, describir las especies de hongos más comúnmente identificadas por diversos autores en alimentos ensilados para rumiantes, y los factores que favorecen su presencia y desarrollo, con la consecuente producción de micotoxinas. Por último, describir algunas medidas para prevenir la contaminación de los ensilajes con micotoxinas, y se muestra la necesidad de realizar investigaciones relacionadas con la presencia de micotoxinas en alimentos para rumiantes en Costa Rica.<br />Los principales efectos en rumiantes de las micotoxinas encontradas en los ensilajes se asocian a alteraciones reproductivas y del sistema inmunológico, así como del sistema digestivo. Los principales géneros identificados en los estudios revisados alrededor del mundo son Penicillium spp, Fusarium spp y Aspergillus spp. Diversos estudios reportan la contaminación de ensilajes principalmente con aflatoxinas (AFB1), fumonisinas (FB1), tricotecenos (DON, T2) y zearalenona. Factores como la presencia de oxígeno durante el ensilaje, la temperatura ambiental, el embalado y el manejo postcosecha de los forrajes tienen una importancia notable como facilitadores del desarrollo de los hongos y la consecuente producción de toxinas.

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Climate change impacts on mycotoxin risks in US maize

Cited by 144 publications

References 115 publications

A survey of aflatoxin B1 in maize and awareness of aflatoxins in Vietnam

A survey of aflatoxin B1 in maize and awareness of aflatoxins in Vietnam

Modelling climate change impacts on mycotoxin contamination

Presencia de hongos y contaminación con micotoxinas en ensilajes para alimentación de rumiantes. Artículo de Revisión

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