摘要
采用电镜观察和生物学研究方法，对烟草丛枝病病原在细胞间传递方式、传播途径及媒介昆虫进行研究。电镜观察发现在烟草病株叶脉细胞中存有多形的类菌体（ＭＬＯｓ），部分样品ＭＬＯｓ含量较多；在病株上采集到的烟盲蝽和烟蚜的唾液腺细胞内观察到ＭＬＯｓ粒体。ＭＬＯｓ分布在病株细胞内的细胞壁、细胞膜及胞间连丝内，通过消解细胞壁和胞间连丝进入另一细胞。生物学实验结果证明，烟蚜和烟盲蝽是烟草丛枝病的传媒昆虫，菟丝子及嫁接病组织可传烟草丛枝病。
Using the electron microscope and biology method we studied the pathogen transmitting ,spread ways and insect vector.The results showed that Mycoplasma-like organisms(MLOs) of the pathogen of tobacco witches broom were in the vein cells of diseased tobacco and the MLOs' numbers were many in some samples.The MLOs were found in the salivary gland cells of tobacco capsid (Cyrtopeltis tenuis Reuter) and tobacco aphid (Myzus persicae Sulzer )which were got at diseased tobaccos .It was also observed the way of the pathogen transmitting in tobacco cells and the process of disease . There were two ways of in the tobacco cells:By way of destroying the cell walls and by way of passing through plasmodesmata,The MLOs could invade into a new healthy cell.The result of biology experiment demonstrated that not only the tobacco capsid but also the tobacco aphid were vehicular insects of tobacco witches broom.The disease could be infected by grafting diseased tissures and plant vector and dodder (Cuscuta chinensis).
出处
《烟草科技》
EI
CAS
1998年第1期42-43,共2页
Tobacco Science & Technology
关键词
烟草
丛枝病
类菌原体
胞间传递
Tobacco witches broom Pathogen transmission Insect vector Spread ways
