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通过对感病的聚合草茎部的超薄切片及电镜观察,以及四环素药物防治等手段,对聚合草矮缩病的病原物进行了研究。在韧皮薄壁细胞中,观察到大量的圆形、椭圆形及正在分裂状态的类菌原体颗粒,大小约为60～400毫微米,可见清晰的双层膜结构,厚度为9毫微米,在筛管细胞中还观察到,与球形颗粒混杂在一起的大量丝状体,略为螺旋形长约600毫微米。病株经四环素、青霉素药物处理后,证明四环素具有明显疗效,青霉素也具有一定的抑制作用。该病原物的形态结构及其大小,均与国内外所报道过的类菌原体趋于一致,对四环素的敏感又是类菌原体的特点之一,据以上结果,我们认定聚合草矮缩病的病原物为类菌原体,本文是在草本植物中的首次报道。
The pathogens of DFCs were studied by means of ultrathin sections and electron microscopy of infected stems of Spartina alterniflora and tetracycline drug control. In the phloem parenchyma cells, a large number of mycoplasma-like particles in the shape of a circle, an ellipse and a split state were observed with a size of about 60 to 400 nm and a clear bilayer membrane structure with a thickness of 9 nm It was also observed in screen cells that a large number of filaments, mixed with spherical particles, were slightly helical about 600 nm in length. Tetracycline strain, penicillin drug treatment, that tetracycline has a significant effect, penicillin also has some inhibitory effect. The morphological structure of the pathogen and its size, both at home and abroad have reported consistent with the class of mycoplasma, tetracycline sensitivity is one of the characteristics of mycoplasma, according to the above results, we believe that the polymerization grass short The contracted pathogen is mycoplasma, this article is the first report in herbs.