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我们在河南发现烟草上有一种丛枝病,病株表现严重矮化,具有典型的丛枝病症状,花瓣呈绿色叶状体。1982年用电子显微镜观察被浸染的嫩茎和叶脉的韧皮部组织的超薄切片,发现类菌质体存在筛管中,风轮状(Pinwheel)存在于病叶组织的细胞中,没有发现TMV和CMV的粒体。同时,还用电子显微镜观察了PTA负染的病株汁液,亦发现有类菌质体,未发现TMV和CMV的粒体。我们认为供试标本可能是由类菌质体和病毒复合侵染烟株的结果。
We found in Henan tobacco has a birch disease, diseased plants showed severe dwarf, with typical symptoms of bushy branches, petals were green fronds. In 1982, the ultrathin sections of the phloem tissues of the infected stems and veins were observed with an electron microscope. It was found that the plastid bodies existed in the sieve tube and Pinwheel was present in the cells of diseased leaves and no TMV and CMV of the granular body. At the same time, electron microscopy was also used to observe the PTA negative stain of the diseased plant juice, also found that there is a kind of mycoplasma, found no TMV and CMV of the granular. We think the test specimen may be the result of compound infection of tobacco plants with the mycoplasma and virus.