中国农业科学 ›› 2006, Vol. 39 ›› Issue (06): 1282-1286 .

• 研究简报 • 上一篇    下一篇

甘蓝型油菜Polima和Shan 2A CMS的orf224基因的序列分析

林宝刚,黄海,张龙,张明龙   

  • 收稿日期:2005-02-02 修回日期:1900-01-01 出版日期:2006-06-10 发布日期:2006-06-10

Sequence Comparison on Gene orf224 of Polima CMS and Shan2A CMS in Brassica napus L.

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  • Received:2005-02-02 Revised:1900-01-01 Online:2006-06-10 Published:2006-06-10

摘要: 【目的】油菜Polima CMS的线粒体基因组中含有orf224的4.5kb的区段是与细胞质雄性不育相关的,验证Shan2A CMS与Polima CMS在orf224的差异性。【方法】根据orf224设计5′端和3′端的1对特异引物,对Polima CMS和Shan2A CMS的线粒体基因组进行PCR扩增,在Shan2A中得到与orf224同源的DNA片段,对其测序分析。【结果】两序列均由675个碱基组成,核苷酸同源性为99.3%。【结论】证实Shan2A CMS与Polima CMS的orf224基因上存在差异,不能简单的从两者具有共同的恢保关系上说明Shan2A CMS就是已知的Polima CMS。

关键词: 甘蓝型油菜, Polima不育系, Shan2A不育系, Orf224, 测序

Abstract: 【Objective】The 4.5kb section including gene orf224 in Mitochondrial genomes of Polima CMS in Brassica napus L.is correlated with cytoplasmic male-sterility. 【Method】 To prove the difference of Shan2A CMS and Polima CMS in gene orf224, two special primers of 5′ and 3′ were designed according to gene orf224 in this research. Mitochondrial genomes of Polima CMS and Shan2A CMS were amplified with two primers above. The homologous DNA section of orf224 was gained in Shan2A CMS and sequenced. 【Result】The results showed that the two sequences both comprise 675 bases. The homology of the two sequences is 99.3%. 【Conclusion】Thus it has proved that Shan2A CMS is different from Polima CMS in gene orf224. So we can't take Shan2A CMS as Polima CMS simply from the relation of maintainer and restorer.

Key words: Brassica napus L, Polima CMS, Shan2A CMS, orf224, Sequencing