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题名: Phylogeny and biogeography of the genus Ainsliaea (Asteraceae) in the Sino-Japanese region based on nuclear rDNA and plastid DNA sequence data
作者: Mitsui, Yuki ; Chen, Shao-Tien ; Zhou, Zhe-Kun ; Peng, Ching-I ; Deng, Yun-Fei ; Setoguchi, Hiroaki
刊名: ANNALS OF BOTANY
关键词: Ainsliaea ; ETS ; ITS ; ndhF ; phylogeography ; rheophytes ; Sino-Japanese region ; EXTERNAL TRANSCRIBED SPACER ; EASTERN NORTH-AMERICA ; CHLOROPLAST DNA ; RIBOSOMAL DNA ; CALYCADENIA COMPOSITAE ; TAXONOMIC RICHNESS ; TEMPERATE PLANTS ; SUNFLOWER FAMILY ; VASCULAR PLANTS ; 18S-26S RDNA
英文摘要: Background The flora of the Sino-Japanese plant region of eastern Asia is distinctively rich compared with other floristic regions in the world. However, knowledge of its floristic evolution is fairly limited. The genus Ainsliaea is endemic to and distributed throughout the Sino-Japanese region. Its interspecific phylogenetic relationships have not been resolved. The aim is to provide insight into floristic evolution in eastern Asia on the basis of a molecular phylogenetic analysis of Ainsliaea species. Methods Cladistic analyses of the sequences of two nuclear (ITS, ETS) and one plastid (ndhF) regions were carried out individually and using the combined data from the three markers. Key Results Phylogenetic analyses of three DNA regions confirmed that Ainsliaea is composed of three major clades that correspond to species distributions. Evolution of the three lineages was estimated to have occurred around 1.1 MYA during the early Pleistocene. Conclusions The results suggest that Ainsliaea species evolved allopatrically and that the descendants were isolated in the eastern (between SE China and Japan, through Taiwan and the Ryukyu Islands) and western (Yunnan Province and its surrounding areas, including the Himalayas, the temperate region of Southeast Asia, and Sichuan Province) sides of the Sino-Japanese region. The results suggest that two distinct lineages of Ainsliaea have independently evolved in environmentally heterogeneous regions within the Sino-Japanese region. These regions have maintained rich and original floras due to their diverse climates and topographies.
出版日期: 2008
卷号: 101, 期号:1, 页码:111-124
语种: 英语
ISSN号: 0305-7364
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/15522
Appears in Collections:中国科学院东亚植物多样性与生物地理学重点实验室_期刊论文

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Mitsui, Yuki; Chen, Shao-Tien; Zhou, Zhe-Kun; Peng, Ching-I; Deng, Yun-Fei; Setoguchi, Hiroaki.Phylogeny and biogeography of the genus Ainsliaea (Asteraceae) in the Sino-Japanese region based on nuclear rDNA and plastid DNA sequence data,ANNALS OF BOTANY,2008,101(1):111-124
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