Patterns of chloroplast DNA variation in Cycas debaoensis (Cycadaceae): conservation implications
Zhan, Qing-Qing1,2; Wang, Jin-Feng1,2; Gong, Xun1; Peng, Hua1
2011-08-01
发表期刊CONSERVATION GENETICS
ISSN1566-0621
卷号12期号:4页码:959-970
摘要Climate changes during glacial periods have had significant effects on the current distribution of plant species. Palaeontologial data suggest that modern cycads originated in southwest China. Cycas debaoensis (Cycadaceae) is an endangered species restricted to a small area of southwest China. This species has been classified into two types: sand and karst, according to the soil matrix they grow on. To determine the locations of its glacial refugia and its genetic structure, we examined chloroplast sequence variation of the atpB-rbcL and psbA-trnH intergenic spacers. Four chloroplast DNA haplotypes were obtained from 120 individuals collected from 11 populations covering the entire extant distribution range of the species. Significant population subdivision was detected (G (ST) = 0.684 and F (ST) = 0.74160), suggesting low levels of gene flow between regions and populations. There was marked haplotype differentiation between populations in the sand and karst regions, with only one haplotype being present in both. The molecular phylogenetic data, together with the geographic distribution of the haplotypes, suggest that C. debaoensis experienced range contraction during glacial periods, and that the current populations are still confined to the areas of the original refugia. These results implied that isolated refugia might have maintained in both sand and karst regions during the last glacial maximum and even earlier glaciations. The low within-population diversity of C. debaoensis suggested that there were strong bottleneck events or founder effects within each separate region during the Quaternary climatic oscillations. These findings are important for the conservation of this endangered species.
关键词Chloroplast Dna Atpb-rbcl And Psba-trnh Cycas Debaoensis Glacial Refugia Range Contraction Population Structure Conservation
资助信息National Natural Science Foundation of China[30670210]; National Basic Research Program of China (973 Program)[2007CB411600]
学科领域Biodiversity Conservation ; Genetics & Heredity
DOI10.1007/s10592-011-0198-9
收录类别SCI
语种英语
WOS研究方向Biodiversity & Conservation ; Genetics & Heredity
WOS类目Biodiversity Conservation ; Genetics & Heredity
WOS记录号WOS:000292880800008
引用统计
被引频次:15[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/3826
专题中国科学院东亚植物多样性与生物地理学重点实验室
作者单位1.Chinese Acad Sci, Key Lab Biodivers & Biogeog, Kunming Inst Bot, Kunming 650204, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Zhan, Qing-Qing,Wang, Jin-Feng,Gong, Xun,et al. Patterns of chloroplast DNA variation in Cycas debaoensis (Cycadaceae): conservation implications[J]. CONSERVATION GENETICS,2011,12(4):959-970.
APA Zhan, Qing-Qing,Wang, Jin-Feng,Gong, Xun,&Peng, Hua.(2011).Patterns of chloroplast DNA variation in Cycas debaoensis (Cycadaceae): conservation implications.CONSERVATION GENETICS,12(4),959-970.
MLA Zhan, Qing-Qing,et al."Patterns of chloroplast DNA variation in Cycas debaoensis (Cycadaceae): conservation implications".CONSERVATION GENETICS 12.4(2011):959-970.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
201203160008.pdf(399KB) 开放获取--请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Zhan, Qing-Qing]的文章
[Wang, Jin-Feng]的文章
[Gong, Xun]的文章
百度学术
百度学术中相似的文章
[Zhan, Qing-Qing]的文章
[Wang, Jin-Feng]的文章
[Gong, Xun]的文章
必应学术
必应学术中相似的文章
[Zhan, Qing-Qing]的文章
[Wang, Jin-Feng]的文章
[Gong, Xun]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。