胶孢镰刀菌产生串珠镰刀菌素的不稳定性 |
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引用本文: | 章红,吴江,李季伦.胶孢镰刀菌产生串珠镰刀菌素的不稳定性[J].菌物学报,1995,14(2). |
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作者姓名: | 章红 吴江 李季伦 |
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作者单位: | 北京农业大学生物学院 北京 100094 |
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摘 要: | 从陕北克山病病区分离到的两株串珠镰刀菌素产生菌株——胶孢镰刀菌(Fusarium subglutinans Wollenw.et Reinking)陕-6号和2-17号进行单孢分离,分别得到23和19个单孢分离株。这些单孢菌株可分为两种培养型:一种形态上与原始菌株相似,产生串珠镰刀菌素,产色素,具有大、小分生孢子,转管八次产毒量有下降;另一种则不产串珠镰刀菌素和孢子,无色素,后者在二株菌的单孢分离菌中所占比例分别为60.9%和15.8%。由此可见,胶孢镰刀菌产毒稳定性受异核体和该菌单核变异性共同影响。
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关 键 词: | 胶孢镰刀菌 串珠镰刀菌素 单孢分离 异核体 |
THE UNSTABILITY OF MONILIFORMIN PRODUCTION BY FUSARIUM SUBGLUTINANS |
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Authors: | Zhang Hong Wu Jiang Li Jilun
College of Biological Sciences Beijing Agricultural University Beijing |
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Institution: | Zhang Hong Wu Jiang Li Jilun
College of Biological Sciences,Beijing Agricultural University,Beijing 100094 |
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Abstract: | Twenty three and nineteen single spores were obtained from strains Shaan-6 and 2-17 of Fusarium subglutinans respectively, both strains were isolated from Keshan disease region in Shaanxi Province. There were two types in the single spore isolates: one type produced moniliformin, pigment, macroconidia and micro-conidia, the yield of the toxin declined after the eighth transfer; the other type did not produce spores, pigment and moniliformin accounting for 60.9% and 15.8% in the single spore isolates of strains Shaan-6 and 2-17 respectively. It can be concluded that the moniliformin producing stability is influenced by both heterokar-yon and monokaryon variability. |
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Keywords: | Fusarium subglutinans Single spore isolation Heterokaryon Moniliformin |
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