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Biological Assays for Two Mycotoxins Produced by Fusarium tricinctum

机译：镰刀菌产生的两种霉菌毒素的生物测定

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A survey was made to detect microorganisms useful for assaying butenolide [4-acetamido-4-hydroxy-2-butenoic acid γ-lactone] and T-2 toxin [4β, 15-diacetoxy-8α-(3-methylbutyryloxy)-12,13-epoxytricothec -9-en-3α-ol]. These mycotoxins produced by strains of Fusarium tricinctum have been implicated in mycotoxicosis of livestock. Although butenolide proved to be a very weak antibiotic, assay discs containing 100 μg of this toxin inhibited Sprillum serpens NRRL B-2052, Vibrio tyrogenus NRRL B-1033, and Xanthomonas campestris NRRL B-1459. T-2 toxin had no effect on 54 bacterial strains but inhibited 6 of 11 fungi. Growth of Rhodotorula rubra NRRL Y-7222 and Penicillium digitatum NRRL 1202 was retarded by assay discs containing 4 μg of T-2 toxin. Solutions with less than 1 μg of T-2 per ml toxin were readily detected by a pea seed germination test. Germination was reduced more than 50% when seeds imbibed solutions of 0.5 μg of T-2 toxin per ml. Butenolide had no effect on pea seed germination at concentrations as high as 200 μg/ml.
机译：进行了一项调查，以检测可用于检测丁烯内酯[4-乙酰氨基-4-羟基-2-丁烯酸γ-内酯]和T-2毒素[4β，15-二乙酰氧基-8α-（3-甲基丁酰氧基）-12， 13-环氧tricothec-9-en-3α-ol]。由镰孢镰刀菌（Fusarium tricinctum）菌株产生的这些霉菌毒素与家畜的霉菌毒素中毒有关。尽管丁烯内酯被证明是一种非常弱的抗生素，但含有100μg这种毒素的检测盘却能抑制Sprillum serpens NRRL B-2052，tybrgen tyrogenus NRRL B-1033和Xanthomonas campestris NRRL B-1459。 T-2毒素对54个细菌菌株没有影响，但抑制了11种真菌中的6种。含有4μgT-2毒素的检测盘可延缓洋红假单胞菌NRRL Y-7222和指状青霉NRRL 1202的生长。每毫升毒素中T-2含量低于1μg的溶液很容易通过豌豆种子发芽试验检测到。当种子吸收每毫升0.5μgT-2毒素的溶液时，发芽减少超过50％。丁烯内酯浓度高达200μg/ ml时对豌豆种子发芽没有影响。

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