(接上期)6.植原体。菌原体又称菌质体、支原体、植原体、菌形体、霉形体、菌原质等。早在1898年,人们就从欧洲流行的一种牛的传染性胸膜肺炎上分离到这类病原微生物。长期以来又从各种动物体内和自然界的污水、土壤等处分离到类似的微生物。虽然当时都报道了这类微生物的形态和培养形性状与一般细菌不同,但由于研究不多,始终未给予分类命名。到1956年美国Edward和丹麦Freundt提出将这类单细胞微生物成立一个新属叫菌原体属,并相应地成立科、目,放在裂殖菌纲内。 (Continued) 6. Phytoplasma. Mycoplasma, also known as mycoplasma, mycoplasma, phytoplasma, fungi, mycoplasma, bacteria and so on. As early as 1898, such pathogenic microorganisms were isolated from a cow’s infectious pleuropneumonia that is prevalent in Europe. For a long time, it has also isolated similar microorganisms from various animal species and from natural sewage and soil. Although it was reported at this time that the morphology and culture-shape traits of these kinds of microorganisms were different from those of ordinary bacteria, they were not given a classification name because of their limited research. By 1956 the United States Edward and Denmark Freundt proposed the establishment of such a single-cell microorganisms called genus Mycoplasma genus, and the corresponding establishment of subjects, orders, on the schizonts.