中文摘要：禾谷镰刀菌复合菌成员是阿根廷小麦赤霉病(FHB)主要的病原体，产生的单端孢霉烯族霉菌毒素常见于麦粒及小麦制品。本研究旨在确定在病害流行和非流行季节，从阿根廷小麦中分离的禾谷镰刀菌复合菌的化学型及单端孢基因型。本研究报道的阿根廷禾谷镰刀菌复合菌产生玉米赤霉烯酮及其隐蔽型霉菌毒素尚属首次。
外文摘要：Members of Fusarium graminearum species complex are the main pathogens associated with Fusarium head blight (FHB) in wheat in Argentina, which produce trichothecene mycotoxins that are found in wheat grain and by-products. The aim of this study was to determine the chemotype and trichothecene genotypes of Fusarium graminearum species complex strains isolated from wheat in Argentina during an epidemic and a non-epidemic harvest season. A total of 115 and 108 strains obtained from wheat during 2012/13 and 2014/15 harvest seasons, respectively, were identified as belonging to the Fusarium graminearum species complex. PCR assays were used to differentiate the 15-acetyldeoxynivalenol (15-ADON), 3-acetyldeoxynivalenol (3-ADON) and nivalenol (NIV) genotypes. The trichothecene type B chemotype, zearalenone, and NX-2 toxin profiles were determined based on chromatographic (LC-MS/MS) analysis. Differences in the genotype frequency were due to the target locus analyzed and year of isolation of the strain. The most common genotype and chemotype was 15-ADON in both seasons, but an increasing frequency of the 3-ADON chemotype was found in the non-epidemic season (2014/15). The strains were able to produce zearalenone and its masked derivatives, but not the type A trichothecene NX-2. This is the first report of the production of zearalenone and its modified mycotoxins by Fusarium graminearum species complex strains isolated from Argentina.
外文关键词：Triticum aestivum L；Fusarium；Chemotype；Genotype；Mycotoxins
作者：Yerkovich, N；Palazzini, JM；Sulyok, M；Chulze, SN
作者单位：Univ Nacl Rio Cuarto
期刊名称：TROPICAL PLANT PATHOLOGY
期刊影响因子：0.835
出版年份：2017
出版刊次：3
点击下载：在病害流行和非流行季节引起阿根廷赤霉病的禾谷镰刀菌复合菌的单端孢基因型、化学型及产生玉米赤霉烯酮的研究