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首页> 外文期刊>Agriculture & Food Security >Distribution of indigenous strains of atoxigenic and toxigenic Aspergillus flavus and Aspergillus parasiticus in maize and peanuts agro-ecological zones of Kenya
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Distribution of indigenous strains of atoxigenic and toxigenic Aspergillus flavus and Aspergillus parasiticus in maize and peanuts agro-ecological zones of Kenya

机译：肯尼亚玉米和花生农业生态区中产毒和产毒黄曲霉和寄生曲霉的本地菌株分布

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Background Grains of important food and export crops in Africa are susceptible to contamination by toxin-producing moulds. Aflatoxins are mycotoxins associated with liver damage and cancer in humans and animals. These toxic substances are produced by fungi (such as Aspergillus flavus and Aspergillus parasiticus ) in food and feed exposed to poor conditions during crop cultivation, storage or processing of harvest. The presence of aflatoxins in especially maize and peanuts in Kenya is of great concern. Recent developments in the application of atoxigenic strains of these fungi as biological control agents against toxigenic strains could be a solution to the problem. The objective of this study was to isolate, identify and characterize atoxigenic and toxigenic strains of A. flavus and A. parasiticus in Kenya, and investigate possible application of atoxigenic strains in control of aflatoxin levels in maize and peanuts. Fungal communities in soils of maize and peanut fields were examined to determine the distributions of aflatoxin-producing Aspergillus species and to identify endemic atoxigenic strains. 220 isolates belonging to A. flavus and A. parasiticus were collected randomly from soils of maize and peanuts fields in seven agro-ecological zones and characterized using morphological and physiological examination.
机译：背景技术非洲重要的粮食和出口农作物的谷物容易受到产毒霉菌的污染。黄曲霉毒素是与人和动物的肝损害和癌症相关的霉菌毒素。这些有毒物质是由真菌（例如黄曲霉和寄生曲霉）在作物种植，存储或收获过程中暴露于恶劣条件的食物和饲料中产生的。黄曲霉毒素特别是在肯尼亚的玉米和花生中的存在令人极为关注。这些真菌的产毒菌株作为针对产毒菌株的生物防治剂的最新进展可能是解决该问题的方法。这项研究的目的是在肯尼亚分离，鉴定和鉴定黄曲霉和寄生曲霉的产毒和产毒菌株，并研究产毒菌株在控制玉米和花生中黄曲霉毒素水平方面的可能应用。检查了玉米和花生田土壤中的真菌群落，以确定产生黄曲霉毒素的曲霉菌种的分布，并鉴定了地方性产毒菌株。从七个农业生态区的玉米和花生田土壤中随机收集了220株黄曲霉和寄生曲霉菌株，并进行了形态学和生理学检查。

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