甘蔗白叶病(Sugarcane white leaf,SCWL)是由植原体引起的甘蔗重要病害之一,1954年首次在泰国北部南邦府发现,我国台湾1958年报道了该病的发生情况[1]。该病在印度、巴基斯坦、斯里兰卡、日本、老挝、缅甸、越南、菲律宾、泰国等地均有大面积发生,造成甘蔗和制糖产业巨大经济损失[2]。SCWL植原体存在于病株韧皮部筛管中, Sugarcane white leaf (SCWL) is one of the most important diseases of sugarcane caused by phytoplasmas. It was first discovered in Lampang in northern Thailand in 1954 and reported in Taiwan in 1958 [1]. The disease in India, Pakistan, Sri Lanka, Japan, Laos, Myanmar, Vietnam, the Philippines, Thailand and other places have occurred on a large scale, causing sugar cane and sugar industry, a huge economic loss [2]. SCWL phytoplasma exists in the phloem sieve of diseased plants,