| 溃疡病菌在杨树树皮组织中的扩展和对寄主细胞超微结构的影响 |
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| 引用本文： | 赵仕光,朱玮,岳红艳.溃疡病菌在杨树树皮组织中的扩展和对寄主细胞超微结构的影响[J].林业科学研究,1999,12(2):118-126. |
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| 作者姓名： | 赵仕光 朱玮 岳红艳 |
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| 作者单位： | 西北林学院,712100,陕西杨陵 |
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| 基金项目： | 1994年国家自然科学基金,1997年西北林学院课题 |
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| 摘 要： | 病理解剖和超微结构研究发现，溃疡病菌是在胞间隙和被分解了的细胞壁中穿行的；其对寄主组织最直接的危害是分解并利用细胞壁，破坏寄主组织细胞结构；抗病的毛白杨在被病菌侵害后，细胞内形成高电子密度的羽形结晶状沉积物，细胞壁膨胀而不疏散，而感病的北京杨和中抗的陕林４号杨在被病菌侵害后，细胞内并不形成类似毛白杨的沉积物，它们的细胞壁因侵染而变得膨胀且松散，毛白杨与北京杨、陕林４号杨在细胞壁结构上的不同，可能是毛白杨产生抗病性的原因之一。
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| 关 键 词： | 杨树溃疡病菌 杨树 组织病理 超微结构 |
| 收稿时间： | 9/3/1998 12:00:00 AM |
Histopathology and Ultrastructure of Periderm Parenchyma Cells on Poplar Stem in Response to the Infection of Botryosphaeria dothidea |
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| Zhao Shiguang,Zhu Wei and Yue Hongyan.Histopathology and Ultrastructure of Periderm Parenchyma Cells on Poplar Stem in Response to the Infection of Botryosphaeria dothidea[J].Forest Research,1999,12(2):118-126. |
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| Authors: | Zhao Shiguang Zhu Wei and Yue Hongyan |
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| Institution: | Northwestern Forestry College, 712100, Yangling, Shanxi, China;Northwestern Forestry College, 712100, Yangling, Shanxi, China;Northwestern Forestry College, 712100, Yangling, Shanxi, China |
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| Abstract: | The
infection process of Botryosphaeria dothidea in the bark of poplar and the response of
poplar bark to the infection were studied. By the use of phenoamonia blue,the infected
and response cells can be stained blue and thus differed from the normal cells. As the
fungus progressed in the periderma,they were always intercelluse of mycothirum
cells,cells 46 layers around can be affected and cytoplasima condensed into
protrusions.After 40 days, phenoderma formed between the necotic tissues and normal
cells,and the resistant poplar have a thicker new periderm than that of the susceptible
one. Above all, the resistant poplar can form a boundary of stindark tyloses in the new
periderm cells which may take the role as to restructed the hyphae from continued
expansion. There is no such a boundary in the wounded but uninoculated controls.
Ultrastructure study by electron micrographs showed that mycelium were abounded in
the susceptible cultivars and always exist between cells or in the swollen and
thickened or dissolved cell walls. In the cells of resistant poplars,a kind of electron
dense, hairlike,crystal deposit were formed. |
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| Keywords: | Botryosphaeria dothidea poplar histopathology ultrastructure |
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