应用real-time RT-PCR鉴定两个水稻品种(品系)对水稻条纹病毒的抗性差异
首发时间:2007-12-26
摘要:本研究应用real-time RT-PCR检测了水稻条纹病毒(Rice stripe virus, RSV)在2种水稻品种(品系)武育粳3号和KT95-418的悬浮细胞内复制循环和相对含量的差异,结合传统生物学接种实验,确定了这两个品种(品系)对RSV抗性的差异。结果表明RSV在武育粳3号的悬浮细胞内24 h达到复制高峰,病毒含量为侵染初期的7.46倍。而在KT95-418的悬浮细胞内,RSV达到复制高峰需要36 h,病毒含量为侵染初期的4.51倍。利用病毒生物学接种的方法,武育粳3号发病率达91.7%,而KT95-418仅为36.0%。由此可见,KT95-418较武育粳3号对RSV具有较高的抗病性。因此,real-time RT-PCR方法与传统生物学接种实验方法相比,具有更高的准确性和灵敏性,可以作为传统品种抗病性鉴定的验证手段。
关键词: 水稻 水稻条纹病毒 品种抗性 real-time RT-PCR 悬浮细胞
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The detection on the different resistance of two rice varieties against Rice stripe virus using real-time RT-PCR
Abstract:The different resistance against Rice stripe virus (RSV) between rice Wuyujing 3 and KT95-418 was investigated via detecting the replication cycle and relative amount of RSV in two varieties rice suspension cells by real-time RT-PCR assay and conventional RSV infected assay. This result showed that it was 24 h and 36 h when RSV replication reached its peak in rice suspension cells of Wuyujing 3 and KT95-418 respectively, and at their peak, the amount of RSV increased 7.46 and 4.51 times respectively. The infected incidences of Wuyujing 3 and KT95-418 were 91.7% and 36.0% by conventional RSV infected method. Therefore, KT95-418 has more high resistance against RSV than Wuyujing 3. In comparison with conventional RSV infected methods, real-time RT-PCR assay has more accurated and sensitive, and will used to validate the result of conventional RSV infected assay.
Keywords: real-time RT-PCR, Rice, Rice stripe virus (RSV), suspension cells, variety resistance
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应用real-time RT-PCR鉴定两个水稻品种(品系)对水稻条纹病毒的抗性差异
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