NDLI: Strong Genetic Differentiation of Primula sikkimensis in the East Himalaya

Content Provider	Springer Nature Link
Author	Wang, Feng Ying Ge, Xue Jun Gong, Xun Hu, Chi Ming Hao, Gang
Copyright Year	2007
Abstract	The East Himalaya-Hengduan Mountains region is the center of diversity of the genus Primula, and P. sikkimensis is one of the most common members of the genus in the region. In this study, the genetic diversity and structure of P. sikkimensis populations in China were assessed using inter-simple sequence repeat (ISSR) and chloroplast microsatellite markers. The 254 individuals analyzed represented 13 populations. High levels of genetic diversity were revealed by ISSR markers. At the species level, the expected heterozygosity and Shannon’s index were 0.4032 and 0.5576, respectively. AMOVA analysis showed that 50.3% of the total genetic diversity was partitioned among populations. Three pairs of chloroplast microsatellite primers tested yielded a total of 12 size variants and 15 chloroplast haplotypes. Strong cpDNA genetic differentiation (G ST = 0.697) and evidence for phylogeographic structure were detected (N ST = 0.788, significantly higher than G ST). Estimated rates of pollen-mediated gene flow are approximately 27% greater than estimated rates of seed-mediated gene flow in P. sikkimensis. Both seed and pollen dispersal, however, are limited, and gene flow among populations appears to be hindered by the patchiness of the species’ habitats and their geographic isolation. These features may have played important roles in shaping the genetic structure of P. sikkimensis. A minimum-spanning tree of chloroplast DNA haplotypes was constructed, and possible glacial refugia of P. sikkimensis were identified.
Starting Page	75
Ending Page	87
Page Count	13
File Format	PDF
ISSN	00062928
Journal	Biochemical Genetics
Volume Number	46
Issue Number	1-2
e-ISSN	15734927
Language	English
Publisher	Springer US
Publisher Date	2007-12-23
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Chloroplast microsatellite East Himalaya–Hengduan Mountains ISSR Primula sikkimensis Medical Microbiology Zoology Biochemistry Human Genetics
Content Type	Text
Resource Type	Article
Subject	Genetics Medicine Biochemistry Molecular Biology Ecology, Evolution, Behavior and Systematics

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