Genetic structure and demographic history of Cycas chenii (Cycadaceae), an endangered species with extremely small populations.

CORC > 昆明植物研究所 > 中国科学院昆明植物研究所 > 植物化学与西部植物资源持续利用国家重点实验室

	Genetic structure and demographic history of Cycas chenii (Cycadaceae), an endangered species with extremely small populations.
	Yang, Rui; Feng, Xiuyan; Gong, Xun
刊名	Plant diversity
	2017
卷号	39 期号:1 页码:44-51
ISSN号	2468-2659
英文摘要	Geological activities and climate oscillations during the Quaternary period profoundly impacted the distribution of species in Southwest China. Some plant species may be harbored in refugia, such as the dry-hot valleys of Southwest China. Cycas chenii X. Gong & W. Zhou, a critically endangered cycad species, which grows under the canopy in subtropical evergreen broad-leaved forests along the upstream drainage area of the Red River, is endemic to this refugium. In this study, 60 individuals of C.chenii collected from six populations were analyzed by sequencing two chloroplast intergenic spacers (cpDNA: psbA-trnH and trnL-trnF) and two nuclear genes (PHYP and RBP-1). Results showed high genetic diversity at the species level, but low within-population genetic diversity and high interpopulation genetic differentiation. A Bayesian phylogenetic tree based on cpDNA showed that five chloroplast haplotypes were clustered into two clades, which corresponds to the division of the western and eastern bank of the Red River. These data indicate a possible role for the Red River as a geographic barrier to gene flow in C.chenii. Based on our findings, we propose appropriate in situ and ex situ conservation strategies for C.chenii.
内容类型	期刊论文
源URL	[http://ir.kib.ac.cn/handle/151853/64858]
专题	昆明植物研究所_植物化学与西部植物资源持续利用国家重点实验室
推荐引用方式 GB/T 7714	Yang, Rui,Feng, Xiuyan,Gong, Xun. Genetic structure and demographic history of Cycas chenii (Cycadaceae), an endangered species with extremely small populations.[J]. Plant diversity,2017,39(1):44-51.
APA	Yang, Rui,Feng, Xiuyan,&Gong, Xun.(2017).Genetic structure and demographic history of Cycas chenii (Cycadaceae), an endangered species with extremely small populations..Plant diversity,39(1),44-51.
MLA	Yang, Rui,et al."Genetic structure and demographic history of Cycas chenii (Cycadaceae), an endangered species with extremely small populations.".Plant diversity 39.1(2017):44-51.