类菌质体(mycoplasma—like bodies)是一种新发现的植物病原微生物。几十年来都认为植物黄化型病害是病毒引起的。1967年杜埃等在《日本植物病理学会报》上报导用电子显微镜观察某些黄化型病植物的薄切片,其病原构造与动物病原菌质体相似。迄今,已发现大约四十种病植物体内有类菌质体。这些病害大多数有黄化型特征,芽过度萌发形成丛枝,节间缩短,叶片变小并常常变脆,叶色变黄或变红以及花变成叶片等。这些症状在草本 Mycoplasma-like bodies are a newly discovered plant pathogenic microorganism. For decades, phytochemical-type diseases are caused by viruses. In 1967, Du et al. Reported in the Journal of Japanese Society of Plant Pathology thin sections of some yellow-type plants by electron microscopy. The pathogenic structure was similar to that of animal pathogens. To date, about 40 species of diseased plants have been found to have mycoplasmas in vivo. Most of these diseases have yellowing features, buds overgrown to form clusters of branches, internodes shortened, leaves becoming smaller and often becoming crisp, leaf color turning yellow or reddish and flowers turning into leaves and the like. These symptoms are in the herbs