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B型烟粉虱携带传播烟草曲茎病毒的能力

, PP. 168-172

Keywords: B型烟粉虱,烟草曲茎病毒,病毒传播

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Abstract:

B型烟粉虱近20年来入侵许多国家和地区,已成为重要的世界性作物害虫,其主要危害方式之一是传播双生病毒,造成作物病毒病大发生。应用PCR技术,研究了入侵我国的B型烟粉虱个体获取、存留及传播烟草曲茎病毒(Tobaccocurlyshootvirus,TbCSV)的能力。B型烟粉虱在感染TbCSV的普通烟毒株上饲毒30min时,就可在40%的个体内检测到TbCSVDNA,个体带毒率随饲毒时间延长而增加,饲毒12h后,带毒率达100%;TbCSVDNA在B型烟粉虱体内可存留10天左右,但不能终身存留;传毒处理植株的发病症状及PCR检测结果表明,B型烟粉虱是TbCSV的传播媒介。

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