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林业科学 ›› 2006, Vol. 42 ›› Issue (5): 142-144.doi: 10.11707/j.1001-7488.20060526

• 研究简报 • 上一篇    

杨树溃疡病菌异核体现象的研究

余仲东1 刘莉丽1 曹支敏1 张星耀2   

  1. 1.西北农林科技大学林学院,杨凌712100;2.中国林业科学研究院,北京100091
  • 收稿日期:2004-09-29 修回日期:1900-01-01 出版日期:2006-05-25 发布日期:2006-05-25

Study on Heterokaryotic Phenomenon of Poplar Canker Pathogen

Yu Zhongdong1,Liu Lili1,Cao Zhimin1,Zhang Xingyao2   

  1. 1.College of Forestry,Northwest A&F University Yangling 712100; 2.Chinese Academy of Forestry Beijing 100091
  • Received:2004-09-29 Revised:1900-01-01 Online:2006-05-25 Published:2006-05-25

关键词: 致病力, 异核体, RFLP

Abstract:

The results of inoculation on apples with heterokaryotic strains show that heterokaryotic phenomenon is one of important reasons of poplar canker pathogenicity variation. The pathogenicity of heterokaryotic strains relates with the weak wild parental strain significantly. The study of cytology manifests nucleolus have transferred between vegetative compatibility strains. The wild parental strain usually has only one nucleolus per cell, while the heterokaryotic strain often has two or more nucleolus per cell. The analysis of ITS-rDNA-RFLP implies the pathogenicity variation may be related with cytoplasm flow.

Key words: pathogenicity, heterokaryotic, RFLP