苹果锈果病是我国苹果产区一种传染性病害。到目前为止,除知道嫁接可以传染该病外,其它传病途径尚不清楚。我们从感病的苹果锈果病植株中,用减压抽提方法抽取输导组织液,在离心富集的沉淀物及超薄切片电镜观察中,发现了难养细菌(Fastidious Bacteria)。经过病原回接等一系列试验,初步认 Apple rust fruit disease is an infectious disease in apple producing areas in China. So far, other than knowing that grafting can infect the disease, the pathways to other diseases are not yet known. We isolated the diseased apple rust-fruit plants by extracting the transplanted tissue fluid by vacuum extraction, and found Fastidious Bacteria in the centrifuge-enriched sediment and ultrathin sectioned electron microscopy. After the pathogen back to a series of tests, preliminary recognition