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首页> 外文期刊>Mycotoxin Research >Mycotoxins produced by Fusarium species associated with annual legume pastures and ‘sheep feed refusal disorders’ in Western Australia
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Mycotoxins produced by Fusarium species associated with annual legume pastures and ‘sheep feed refusal disorders’ in Western Australia

机译：镰刀菌属物种产生的霉菌毒素与西澳大利亚州的一年生豆类牧草和“绵羊拒食性疾病”有关

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摘要

Sheep grazing in Western Australia can partially or completely refuse to consume annual Medicago pods contaminated with a number of different Fusarium species. Many Fusarium species are known to produce trichothecenes as part of their array of toxigenic secondary metabolites, which are known to cause feed refusal in animals. This study reports the identity of Fusarium species using species-specific PCR primers and a characterization of the toxigenic secondary metabolites produced by 24 Fusarium isolates associated with annual legume-based pastures and particularly those associated with sheep feed refusal disorders in Western Australia. Purification of the fungal extracts was facilitated by a bioassay-guided fractionation using brine shrimp. A number of trichothecenes (3-acetyldeoxynivalenol, deoxynivalenol, fusarenon-X, monoacetoxyscirpenols, diacetoxyscirpenol, scirpentriol, HT-2 toxin and T-2 toxin), enniatins (A, A1, B, and B1), chlamydosporol and zearalenone were identified using GC/MS and/or NMR spectroscopy. Some of the crude extracts and fractions showed significant activity against brine shrimp at concentrations as low as 5 μg ml-1, and are likely to be involved in the sheep feed refusal disorders. This is the first report of chlamydosporol production by confirmed Fusarium spp.; of the incidence of F. brachygibbosum and F. venenatum in Australia and of F. tricinctum in Western Australia; and of mycotoxin production by Fusarium species from Western Australia.
机译：在西澳大利亚州放牧的绵羊可以部分或完全拒绝食用被多种镰刀菌污染的一年生苜蓿荚。已知许多镰刀菌种会产生毛虫，这是其产毒次生代谢产物阵列的一部分，已知会导致动物拒食。这项研究报告了使用物种特异性PCR引物鉴定镰刀菌物种的特征，并表征了由24种与一年生豆类牧场相关的镰孢分离株产生的产毒次生代谢产物，特别是与西澳大利亚州绵羊拒食性疾病相关的菌株。使用盐水虾进行生物测定指导的分馏有助于真菌提取物的纯化。使用了三甲酚（3-乙酰基脱氧雪茄烯醇，脱氧雪茄烯醇，fusarenon-X，单乙酰氧基scirpenols，二乙酰氧基scirpenol，scirpentriol，HT-2毒素和T-2毒素），en烯苷（A，A1，B和B1），衣原体和玉米赤霉烯酮GC / MS和/或NMR光谱。一些粗提取物和馏分在浓度低至5μgml-1 时显示出对盐水虾的显着活性，并且可能与绵羊拒食有关。这是确诊的镰刀菌属物种首次生产衣原体的报告。在澳大利亚和在西澳大利亚的短螺旋体和肉毒杆菌的发生率；以及来自西澳大利亚的镰刀菌属种类产生的霉菌毒素。

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  • 来源
    《Mycotoxin Research》 |2011年第2期|p.123-135|共13页
  • 作者

    Diana C. Tan; Gavin R. Flematti; Emilio L. Ghisalberti; Krishnapillai Sivasithamparam; Sukumar Chakraborty; Friday Obanor; Martin John Barbetti;

  • 作者单位

    School of Plant Biology, Faculty of Natural and Agricultural Sciences, The University of Western Australia, Crawley, WA, 6009, Australia;

    School of Biomedical, Biomolecular and Chemical Sciences, Faculty of Life and Physical Sciences, The University of Western Australia, Crawley, WA, 6009, Australia;

    School of Biomedical, Biomolecular and Chemical Sciences, Faculty of Life and Physical Sciences, The University of Western Australia, Crawley, WA, 6009, Australia;

    School of Plant Biology, Faculty of Natural and Agricultural Sciences, The University of Western Australia, Crawley, WA, 6009, Australia;

    CSIRO Plant Industry, 306 Carmody Road, St Lucia, Queensland, 4067, Australia;

    CSIRO Plant Industry, 306 Carmody Road, St Lucia, Queensland, 4067, Australia;

    School of Plant Biology, Faculty of Natural and Agricultural Sciences, The University of Western Australia, Crawley, WA, 6009, Australia;

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  • 关键词

    Fusarium; Feed refusal; Mycotoxins; Trichothecene; Enniatin; Chlamydosporol; Zearalenone; Pasture; Brine shrimp;

    机译：镰刀菌;拒食;霉菌毒素;单端孢菌素;烯醇丁胺;衣原体;泽拉烯酮;牧草;盐水虾;

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