【摘要】 本文首次报告人参坏死病及其病原体。通过罹病人参各部位的超薄切片,在筛管细胞中,观察到大量具单位膜而无细胞壁、多形态的类菌原体(MLO)。这种类菌原体大小为80—1400nm,外膜厚度8—12nm。以四环素喷叶试验证明,四环素对病状有抑制作用。初步认为人参坏死病是由类菌原体引起的。更多还原

【Abstract】 Treatment of diseased plants with tetracycline hydrochloride resulted in a suppression of necrotic disease symptoms. MLO were found in the sieve tubes of P. ginseng naturally infected with necrosis, but were absent in the contro, healthy plants. These bodies ranged in size from 80—1400 nm and are presumably the cause of the disease. This is the first report of MLO in P. ginseng.更多还原