| 油菜菌核病致病机理的研究 Ⅰ.植物毒素的产生及毒素晶体扫描电镜观察 |
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| 引用本文： | 吴纯仁,刘后利.油菜菌核病致病机理的研究 Ⅰ.植物毒素的产生及毒素晶体扫描电镜观察[J].中国油料作物学报,1989(1). |
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| 作者姓名： | 吴纯仁 刘后利 |
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| 作者单位： | 华中农业大学遗传育种研究所
(吴纯仁)，华中农业大学遗传育种研究所(刘后利) |
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| 摘 要： | 本文研究了离体培养条件下油菜菌核病菌(Sclerotinia sclerotiorum)草酸毒素的产生及其晶体结构。结果表明,培养过程中草酸含量呈S型增长,其增长速率与病菌的生长速度呈正相关,并伴随着pH值相应的规律变化。病菌分泌的草酸与钙离子形成四面体或棱柱形晶体结构。生物测定证实了草酸在油菜菌核病致病性中的作用.
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| 关 键 词： | 油菜 菌核病 草酸 致病性 |
STUDIES ON THE PATHOGENESIS OF SCLEROTINIA SCLEROTIORUM IN RAPESEEDI.PHYTOTOXIN PRODUCTION AND SCANNING ELECTRON MICROSCOPIC OBSERVATION OF ITS CRYSTALS |
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| Wu chunren Liu Houli.STUDIES ON THE PATHOGENESIS OF SCLEROTINIA SCLEROTIORUM IN RAPESEEDI.PHYTOTOXIN PRODUCTION AND SCANNING ELECTRON MICROSCOPIC OBSERVATION OF ITS CRYSTALS[J].Chinese Journal of Oil Crop Sciences,1989(1). |
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| Authors: | Wu chunren Liu Houli |
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| Abstract: | In vitro production of xalic acid,aphytotoxin of the fungus(Sclerotinia sclerotiorum),and scanning observation of its crystals were studied.The results showed that oxalic acid content increased as S-type model,and its accumulation rate was correlated positively with rate of fungal growth and naga-cively with change of pH value in culture during incubation periods.In agar cultures supplemented with calcium,the,crystals of phytotoxin were predomi-natly tetragonal or prismatic.The bioassay revealed the role of oxalic acid in pathogenesis. |
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| Keywords: | Sclerotinia sclerotiorum Oxalic acid Pathogenesis Rapeseed |
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