山楂属植物中苹果褪绿叶斑病毒的RT-PCR检测及病毒脱除方法Detection of Apple chlorotic leaf spot virus in hawthorn and comparison of virus elimination methods
郑文燕;郭巍;马跃;李晓明;代红艳;
摘要(Abstract):
【目的】建立优化的山楂属植物苹果褪绿叶斑病毒(ACLSV)的RT-PCR检测体系,获得以山楂组培苗为试材的高效ACLSV脱除方法。【方法】基于转录组高通量测序解析的山楂属植物ACLSV基因组序列设计病毒检测引物,比较c DNA模板浓度、Taq DNA聚合酶种类及采样部位对病毒RT-PCR检测效果的影响。通过组培苗热处理和培养基中添加三氮唑核苷来脱除山楂植株中的ACLSV。【结果】基于转录组高通量测序获得的2个ACLSV山楂分离物的全基因组序列设计并筛选出适合于山楂属植物ACLSV的RT-PCR检测引物。建立了优化的山楂属植物ACLSV的RT-PCR检测体系。对80份山楂样品进行病毒检测,其中有18个样本检测出ACLSV,带毒率为22.5%。比较了热处理(37℃、30d)、化学处理(培养基中添加20 mg·L-1的三氮唑核苷,处理40 d)、热处理与化学处理结合方法(处理30 d)3种方法对山楂组培苗中ACLSV的脱除效率,表明热处理或热处理与化学处理结合的方法能够完全脱除山楂中的ACLSV,而单独化学处理的脱毒率不能达到100%。【结论】建立了优化的山楂属植物ACLSV的RT-PCR检测体系,表明组培苗热处理是脱除山楂植株中ACLSV的有效方法。
关键词(KeyWords): 山楂;苹果褪绿叶斑病毒;RT-PCR;组培;脱毒
基金项目(Foundation): 国家自然科学基金(31470678)
作者(Author): 郑文燕;郭巍;马跃;李晓明;代红艳;
Email:
DOI: 10.13925/j.cnki.gsxb.20160349
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