Pollen-mediated gene flow promotes low nuclear genetic differentiation among populations of Cycas debaoensis (Cycadaceae)

doi:10.1007/s11295-016-1051-6

	Pollen-mediated gene flow promotes low nuclear genetic differentiation among populations of Cycas debaoensis (Cycadaceae)
	Gong, Yi-Qing; Gong, Xun
	2016-10-01
发表期刊	TREE GENETICS & GENOMES
卷号	12 期号:5 页码:93
摘要	Cycas debaoensis is a critically endangered cycad species endemic to China. This species is found on two kinds of habitats according to the edaphic differences, sand and karst. A previous chloroplast DNA (cpDNA) study indicated that C. debaoensis had low genetic variation within populations and high genetic differentiation among populations. Because maternally inherited cpDNA does not fully characterize genetic structure of the species, we screened seven low-copy nuclear genes and 17 nuclear microsatellite loci to detect the nuclear genetic diversity, differentiation, and the population structure of C. debaoensis. The nuclear genes revealed higher level of genetic diversity. There were both the same and region-specific haplotypes or alleles between the karst and sand regions. Nuclear gene flow among all the populations was much greater than that of cpDNA, which indicated that pollen-mediated gene flow was much greater than seed-mediated gene flow. This promoted low nuclear genetic differentiation among populations of C. debaoensis. The study suggests that both genetic and anthropogenic disturbances have resulted in the critically endangered status of C. debaoensis.
关键词	Cycas Debaoensis Genetic Differentiation Population Structure Gene Flow Conservation
DOI	10.1007/s11295-016-1051-6
收录类别	SCI
语种	英语
WOS记录号	WOS:000385143300011
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/33540
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	Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming, Peoples R China
推荐引用方式 GB/T 7714	Gong, Yi-Qing,Gong, Xun. Pollen-mediated gene flow promotes low nuclear genetic differentiation among populations of Cycas debaoensis (Cycadaceae)[J]. TREE GENETICS & GENOMES,2016,12(5):93.
APA	Gong, Yi-Qing,&Gong, Xun.(2016).Pollen-mediated gene flow promotes low nuclear genetic differentiation among populations of Cycas debaoensis (Cycadaceae).TREE GENETICS & GENOMES,12(5),93.
MLA	Gong, Yi-Qing,et al."Pollen-mediated gene flow promotes low nuclear genetic differentiation among populations of Cycas debaoensis (Cycadaceae)".TREE GENETICS & GENOMES 12.5(2016):93.

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