| 山定子感染南京毛刺线虫后几种生理生化物质的变化 |
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| 引用本文： | 郝玉金,翟衡,王寿华.山定子感染南京毛刺线虫后几种生理生化物质的变化[J].植物病理学报,1999,29(1):83-86. |
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| 作者姓名： | 郝玉金 翟衡 王寿华 |
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| 作者单位： | 1 山东农业大学园艺系, 泰安 271018;2 中国农业大学植病系, 北京 100094 |
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| 摘 要： | 山定子(Malus baccata Borkh.)在遭到南京毛刺线虫(Trichodorus nanjingensis Liu & Chen)侵染以后,根尖组织中很多生理生化物质都发生了病态的变化。结果表明:处理和对照相比,游离脯氨酸(Pro)含量、还原糖(RC)含量、过氧化物酶(POD)活性、多酚氧化酶(PPO D)活性、苯丙氨酸解氨酶(PAL)活性和细胞壁中羟脯氨酸(Hyp)含量均有不同程度的增加,总糖含量降低;并且在侵染初期和侵染后期,各种物质的变化幅度不同,游离脯氨酸含量、还原糖含量、3种酶活性在侵染前期增加的幅度大,细胞壁中羟脯氨酸含量是侵染后期增加的幅度大,而总糖含量是侵染后期降低的幅度大。这些物质的变化趋势揭示了山定子感染南京毛刺线虫的病症生理。
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| 关 键 词： | 山定子 南京毛刺线虫 生理生化物质 |
CHANGE OF PHYSIOCHEMICAL SUBSTANCES IN Malus baccata INFECTED WITH Trichodorus
nanjingensis |
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| Hao Yujin,Zhai Heng,Wang Shouhua.CHANGE OF PHYSIOCHEMICAL SUBSTANCES IN Malus baccata INFECTED WITH Trichodorus
nanjingensis[J].Acta Phytopathologica Sinica,1999,29(1):83-86. |
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| Authors: | Hao Yujin Zhai Heng Wang Shouhua |
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| Institution: | 1 Department of Horticulture, Shandong Agricultural University, Taian 271018;2 Department of Plant Pathology, China Agricultural University, Beijing 100094 |
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| Abstract: | Morbid changes of some Physiochemical substances were found in the roottip tissues of Malus baccata infected with Trichodorus nanjingensis.These changes included the rise of the content of free proline, reduced carbohydrate and hydroproline in cell wall as well as the activity of POD PPOD and PAL. Furthermore, the changing range of all tested substances was different. The increasing range of free proline, reduced carbohydrate and the activity of three kinds of enzymes at early stage was bigger than at later stage but the increasing range of hydroproline was smaller at early stage than at later stage. The decreasing range of total carbohydrate was smaller at early stage than at later stage. The changing tendency of above substances shed light upon the physiopathology of M. baccata infected with T. nanjingensis. |
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| Keywords: | Malus baccata Borkh Trichodorus nanjingensis Liu & Chen physiochemical substance |
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