据山东林科所、中国科学院上海生化所最近研究,从泡桐丛枝病树中检出类菌原体的同时,并进行了病毒分离纯化和电子显微镜观察。取病叶用0.2M、pH7.2磷酸缓冲液抽提,提取液用20%氯仿处理后,加入6%聚乙二崞(分子量6000)和3%氯化钠进行沉淀,沉 According to the recent research by Shandong Linke Institute and Shanghai Institute of Biochemistry, Chinese Academy of Sciences, the mycoplasma was detected from the paulownia witches broom disease tree and virus isolation and purification and electron microscopy were performed. Take sick leaves with 0.2M, pH7.2 phosphate buffer extraction, the extract was treated with 20% chloroform, add 6% polyethylene glycol (molecular weight 6000) and 3% sodium chloride precipitation