›› 2006, Vol. 49 ›› Issue (3): 470-473.

• 研究论文 • 上一篇    下一篇

基于线粒体COⅠ和NADH-6基因分子检测的中日家蚕和野桑蚕亲缘关系的研究

李兵,浜野国胜,蜷木理,原和二郎,沈卫德   

  1. 苏州大学生命科学学院
  • 出版日期:2006-07-10 发布日期:2006-06-20

The genetic relationship between domestic silkworm (Bombyx mori L.) and wild silkworm (B. mandarina Moore) of China and Japan based on DIG-RFLP molecular detection on COI and NADH-6 of mtDNA

LI Bing, HAMANO Kuni-Katu, NINAGI Osameru, HARA Wa-Zu-Rou, SHEN Wei-De   

  1. School of Life Sciences, Soochow University
  • Online:2006-07-10 Published:2006-06-20

摘要:

为了进一步明确家蚕和野桑蚕的亲缘关系,收集了中国和日本的一些家蚕和野桑蚕品种资源,提取了家蚕和野桑蚕的总mRNA,通过RT-PCR克隆了家蚕和野桑蚕线粒体DNA (mtDNA)的细胞色素氧化酶亚基1基因(cytochrome oxidase subunit 1 gene, COⅠ)和NADH-6基因,并制备探针进行了DIG-RFLP检测。结果表明,中国和日本的家蚕与中国野桑蚕的COⅠ和NADH-6基因的DIG-RFLP的分子多态性相同,但与日本野桑蚕存在差异。此结果从线粒体水平证实了中国和日本的家蚕都起源于中国野桑蚕,而不是起源于日本的野桑蚕。

关键词: 家蚕, 野桑蚕, mtDNA, 细胞色素氧化酶基因1, NADH-6基因, RFLP

Abstract:

To obtain more information about the genetic relationship between domestic and wild silkworms, we collected domestic silkworms (Bombyx mori L.) and wild silkworms (B. mandarina Moore) from China and Japan, respectively. Total mRNAs of domestic and wild silkworms were extracted, and COⅠ and NADH-6 genes from mtDNA were cloned by RT-PCR and analysed by DIG-RFLP method. The results showed that the Chinese domestic silkworm had the same molecular diversity as that of the Japanese domestic silkworm and Chinese wild silkworm, but had different diversity from that of the Japanese wild silkworm. The results suggested that both Chinese and Japanese domestic silkworms originated from Chinese wild silkworm but not from Japanese wild silkworm.
 

Key words: Bombyx mori, Bombyx mandarina, mtDNA, COI, NADH-6 gene, RFLP