| 菌核菌粗毒素对向日葵种子及幼苗的毒害作用 |
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| 引用本文： | 李得宙,张笑宇,刘正垣,李凤琴,刘正坪.菌核菌粗毒素对向日葵种子及幼苗的毒害作用[J].北京农学院学报,2008,23(4). |
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| 作者姓名： | 李得宙 张笑宇 刘正垣 李凤琴 刘正坪 |
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| 作者单位： | 内蒙古农业大学,呼和浩特010019;北京农学院植物科学技术系,北京102206;内蒙古农牧业厅,信息中心,呼和浩特010011;鄂尔多斯市环保局,东胜,017000 |
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| 摘 要： | 利用向日葵菌核菌粗毒素和病菌培养滤液处理向日葵的种子和幼苗,研究粗毒素对种子萌发、胚根生长的影响,对幼苗的致萎作用、对幼苗离体叶片的致病作用以及对叶片细胞膜透性的影响。结果表明:菌核菌粗毒素对向日葵种子萌发、胚根伸长和幼苗生长都有毒害或抑制作用,对离体叶片也具有强烈的致病作用,且粗毒素和培养滤液引起的症状基本相同。同时,草酸毒素可作用于寄主细胞膜,引起细胞膜透性的增加,造成膜功能的紊乱。
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| 关 键 词： | 向日葵 核盘菌 粗毒素 毒害作用 细胞膜透性 |
Poisoning Effects of Crude Toxin by Sclerotinia Sclerotiorum on Seed and Seedling of Sunflower |
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| LI De-zhou,ZHANG Xiao-yu,LIU Zheng-yuan,LI Feng-qin,LIU Zheng-ping.Poisoning Effects of Crude Toxin by Sclerotinia Sclerotiorum on Seed and Seedling of Sunflower[J].Journal of Beijing Agricultural College,2008,23(4). |
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| Authors: | LI De-zhou ZHANG Xiao-yu LIU Zheng-yuan LI Feng-qin LIU Zheng-ping |
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| Abstract: | Poisoning effects of crude toxin by Sclerotinia sclerotiorum on seed and seedling of sunflower were studied.The results showed that crude toxin could inhibit seed germination,plumular axis growth and seedling growth and also induce lesions of sunflower leaves in vitro.Crude toxin produced the same symptoms with culture filtrate of Sclerotinia sclerotiorum.After being treated with crude toxin in sunflower leaves,the permeability of cell membrane was examined by the electrical conductivity method.The results showed that the permeability of cell membrane was increasing gradually after being treated with crude toxin.The function of cell membrane was damaged in sunflower leaves. |
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| Keywords: | sunflower Sclerotinia sclerotiorum crude toxin poisoning effects permeability of cell membrane |
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