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Genetic diversity and genetic structure of different populations of the endangered species Davidia involucrata in China detected by inter-simple sequence repeat analysis

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Trees : Volume 25, Issue 5, October 2011

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Genetic diversity and genetic structure of different populations of the endangered species Davidia involucrata in China detected by inter-simple sequence repeat analysis

Content Provider	Springer Nature Link
Author	Luo, Shijia He, Yanhong Ning, Guogui Zhang, Jiaqi Ma, Guangying Bao, Manzhu
Copyright Year	2011
Abstract	Dove tree (Davidia involucrate) is a Tertiary relic species endemic to China and is reputed to be a ‘living fossil’ in the plant kingdom. Genetic diversity and genetic structure of this species were analyzed for its conservation and management, using inter-simple sequence repeat (ISSR) data obtained from eight populations distributed throughout seven provinces of China. A relatively high level of genetic diversity, at both population and species levels, was detected using the POPGENE software. Analysis of molecular variance (AMOVA) revealed a moderate level of among-population variation (i.e., 33.21%). The genetic structure of dove tree was closely consistent with their isolated topographical distribution region based on the results of the STRUCTURE, POPGENE-UPGMA and PCA analysis. It is postulated that the relatively high level of genetic diversity has been maintained because of: (a) the original wild geographical distribution, (b) propagation through outcrossing seeds or root suckers, (c) the longevity of individuals and (d) the relatively little human disturbance. Genetic drift and restricted gene are important factors affecting genetic differentiation. There was no significant correlation between geographical distances and a pairwise comparison with genetic distances, as analyzed by the Mantel test, but the clustering result of genetic diversity was consistent with their isolated topographical distribution regions. Thus, maintaining the stable special habitats associated with this species is recommended for the in situ conservation. Furthermore, it is important to develop an effective seed germination system for the maintenance of an ex situ conservation pool of the germplasm resources.
Starting Page	1063
Ending Page	1071
Page Count	9
File Format	PDF
ISSN	09311890
Journal	Trees
Volume Number	25
Issue Number	6
e-ISSN	14322285
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-06-25
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Dove tree (Davidia involucrate Baill.) Inter-simple sequence repeat (ISSR) Genetic diversity Genetic variation Population structure Conservation Plant Sciences Agriculture Plant Physiology Plant Pathology Plant Anatomy/Development Forestry
Content Type	Text
Resource Type	Article
Subject	Ecology Physiology Plant Science Forestry

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