High regional genetic differentiation of an endangered relict plant Craigia yunnanensis and implications for its conservation.

	High regional genetic differentiation of an endangered relict plant Craigia yunnanensis and implications for its conservation.
	Yang, Jing; Gao, Zerui; Sun, Weibang; Zhang, Changqin
	2016
发表期刊	Plant diversity
ISSN	2468-2659
卷号	38 期号:5 页码:221-226
摘要	Of the genus Craigia, widespread in the Tertiary, only two relict species survived to modern times. One species is now possibly extinct and the other one, Craigia yunnanensis, is severely endangered. Extensive surveys have located six C.yunnanensis populations in Yunnan province, southwest China. Using fluorescent amplified fragment length polymorphism (AFLP), the genetic diversity and population structure of these populations were examined. It was found that genetic diversity of C.yunnanensis was moderate at the species level, but low at regional and population levels. Analysis of population structure showed significant genetic differentiation between Wenshan and Dehong regions, apparently representing two geographically isolated for long time refuges. There are also clear indications of isolation between populations, which, together with anthropogenically caused decline of population size, will lead to general loss of the species genetic variation with subsequent loss of adaptive potential. To conserve the genetic integrity of C. yunnanensis, we recommend that ex-situ conservation should include representative samples from every population of the two differentiated regions (e.g. Wenshan and Dehong). The crosses between individuals originated from different regions should be avoided because of a high risk of outbreeding depression. As all the extant populations of C.yunnanensis are in unprotected areas with strong anthropogenic impact, there is no alternative to reintroduction of C.yunnanensis into suitable protected locations.
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/64872
专题	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, Jing,Gao, Zerui,Sun, Weibang,et al. High regional genetic differentiation of an endangered relict plant Craigia yunnanensis and implications for its conservation.[J]. Plant diversity,2016,38(5):221-226.
APA	Yang, Jing,Gao, Zerui,Sun, Weibang,&Zhang, Changqin.(2016).High regional genetic differentiation of an endangered relict plant Craigia yunnanensis and implications for its conservation..Plant diversity,38(5),221-226.
MLA	Yang, Jing,et al."High regional genetic differentiation of an endangered relict plant Craigia yunnanensis and implications for its conservation.".Plant diversity 38.5(2016):221-226.