Nucleotide Sequence Variations in a Medicinal Relative of Asparagus, <i>Asparagus cochinchinensis</i>(Lour.) Merrill (Asparagaceae)  

作　　者：Tatsuya Fukuda In-Ja Song Takuro Ito Hiroshi Hayakawa Yukio Minamiya Akira Kanno Hokuto Nakayama Jun Yokoyama 

机构地区：[1]不详

出　　处：《American Journal of Plant Sciences》2011年第6期765-775,共11页美国植物学期刊（英文）

摘　　要：To determine the eVolutionary history of Asparagus cochinchinensis (Asparagaceae), we investigated the geographic pattern of its nucleotide sequence variations in Japan, Taiwan, South Korea and China. We found 21 polymorphic nucleotide sites by sequencing the internal transcribed spacer (ITS) region, which gave rise to a total of 15 haplotypes, labeled A to O. The A-type was found only in inland China (Guizhou and Sichuan), and the other haplotypes in China extended to several lineages;therefore, A. cochinchinensis may have its origin in the interior of China. The I-type has large distribution area and it also experienced a quick expansion in relative recent years. Haplotype differentiation was observed between the eastern and western side of the Central Mountain Ridge in Taiwan. Two lineages were found in Japan, one in the Yaeyama Islands and the other in remaining areas of Japan, implying that A. cochinchinensis independently colonized in Japan at least twice.To determine the eVolutionary history of Asparagus cochinchinensis (Asparagaceae), we investigated the geographic pattern of its nucleotide sequence variations in Japan, Taiwan, South Korea and China. We found 21 polymorphic nucleotide sites by sequencing the internal transcribed spacer (ITS) region, which gave rise to a total of 15 haplotypes, labeled A to O. The A-type was found only in inland China (Guizhou and Sichuan), and the other haplotypes in China extended to several lineages;therefore, A. cochinchinensis may have its origin in the interior of China. The I-type has large distribution area and it also experienced a quick expansion in relative recent years. Haplotype differentiation was observed between the eastern and western side of the Central Mountain Ridge in Taiwan. Two lineages were found in Japan, one in the Yaeyama Islands and the other in remaining areas of Japan, implying that A. cochinchinensis independently colonized in Japan at least twice.

关 键 词：ASPARAGUS cochinchinensis Internal Transcribed SPACER (ITS) Phylogeny PHYLOGEOGRAPHY 

分 类 号：R73[医药卫生—肿瘤]