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园艺学报 ›› 2006, Vol. 33 ›› Issue (1): 137-139.

• 研究简报 • 上一篇    下一篇

扁桃自交不亲和基因的多态性分析

马 艳1, 2 ;马荣才2   

  1. (1 河北科技师范学院园艺系, 昌黎066600; 2 北京市农林科学院生物技术研究中心, 北京100089)
  • 收稿日期:2005-06-03 修回日期:2005-11-28 出版日期:2006-02-25 发布日期:2006-02-25

Analysis on Polymorphism of S Gene in Almond

Ma Yan1, 2;Ma Rongcai2   

  1. (1Hebei Normal College of Science and Technical, Changli 066600, China; 2Beijing Agro-biotechnology Research Center, Beijing 100089, China)
  • Received:2005-06-03 Revised:2005-11-28 Online:2006-02-25 Published:2006-02-25

摘要: 根据蔷薇科树种S基因的保守序列设计引物, 利用PCR技术对8个新疆扁桃品种S基因进行扩增, 获得了10个大小不同的S基因片段。测序结果表明, 这些DNA片段的核苷酸序列中都具有编码蔷薇科S-RNAase 5个高度保守区域: C1、C2、C3、RC4、C5的序列、编码高变区(RHV) 的序列以及变异度很大的内含子序列, 并且其高变区和内含子序列具有扁桃S基因特异性。同源性分析表明, 获得的10个氨基酸序列与蔷薇科中李亚科S2RNase的氨基酸序列同源性达67% ~96% , 扁桃与樱桃、杏应同属于李亚科。

关键词: 扁桃, 自交不亲和, S基因, PCR, 序列

Abstract: To investigate the characteristics of the S gene in almond, we degenerative primers according to conservative sequence of S gene in rosaceous plant and got 10 S gene fragments by PCR application from 8 almond cultivars in China. All sequenceswere aligned with S genes in GeneBank by BLAST software. The result indicated that all 10 fragments contained domain encoding 5 high conservation regions (C1, C2, C3, RC4, C5) and hypervariable region (RHV) of rosaceous S2RNase . RHV and intron characterized S gene furthermore. Homology analysis showed that the amino acid sequence between putative peptides from above S gene fragments and that from S-RNase of rosaceous p lant were 67% - 96% of homology. Almond should be assigned to plum subspecific group s with cherry and apricot.

Key words: Almond, Self-incompatibility, S gene, PCR, Sequence