详细信息
欧美杨溃疡病菌在侵染寄主过程中的动态变化
Dynamic Changesof Lonsdalea quercina subsp.populi in Infection Process of Populus×euramericana
文献类型:期刊文献
中文题名:欧美杨溃疡病菌在侵染寄主过程中的动态变化
英文题名:Dynamic Changesof Lonsdalea quercina subsp.populi in Infection Process of Populus×euramericana
作者:商靖[1] 李永[2] 李爱宁[1] 贺伟[1] 郭利民[3] 常聚普[3]
第一作者:商靖
机构:[1]省部共建森林培育与保护教育部重点实验室(北京林业大学);[2]中国林业科学研究院森林生态环境与保护研究所;[3]河南省濮阳市林业科学院
年份:2014
卷号:42
期号:11
起止页码:120-123
中文期刊名:东北林业大学学报
外文期刊名:Journal of Northeast Forestry University
收录:CSTPCD;;北大核心:【北大核心2011】;CSCD:【CSCD2013_2014】;
基金:林业公益性行业专项(201104054);国家自然基金青年基金项目(31200486)
语种:中文
中文关键词:欧美杨溃疡病;Real-time;PCR;组织病理学
外文关键词:Lonsdalea canker of poplar;Real-time PCR;Histopathology
分类号:S763.13;S792.11
摘要:采用Real-timePCR和病理组织切片相结合的方法,分析了欧美杨溃疡病病原菌(Lonsdaleaquercinasubsp.populi)侵染欧美杨(Populus×euramericana‘zhonglin46’)后不同时间的种群量及其变化。结果表明:接种3d后植株内己有一定的菌量积累,从结构上看,对植物尚未造成明显的伤害。但从接种第5天开始,菌量明显增加,部分细胞破裂,植株显症。接种9~15d,菌量增加到峰值,并进入稳定期,韧皮部组织细胞破裂明显,薄壁细胞解离,植株显症严重。应用Real-timePCR分子定量法可直接对欧美杨植株体内的病原菌进行动态定量研究。
We quantified bacterial population of Lonsdalea quercina in Populus×euramericana‘Zhonglin 46’ and disease symp-tom occurrence in the infection process of the pathogen by using real-time PCR and histopathology.The bacterial accumula-tion in number within Poplar branch bark tissue was detected at 3-day post-inoculation (dpi), while no disease symptom-soccurred.Then, the bacterial density within Poplar increased significantly with some cells in cortical layer broken, initial symptom occurred 5 dpi.Bacterial numbers reached a peak and maintained a high population 9-16 dpi, when the cell in the phloem was broke seriously, and parenchyma cells were disaggregated.The plants displayed severe disease symptoms. Therefore, real-time PCR assays can be used to quantify the pathogen in infected plant tissues.
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