Population genetics and conservation of the extremely narrow Pyrenean palaeoendemic Glandora oleifolia (Boraginaceae)

被引:7
作者
del Hoyo, Alberto [1 ]
Lopez-Pujol, Jordi [2 ,3 ]
Chung, Mi Yoon [4 ,5 ]
Lasso de la Vega, Blanca [6 ]
机构
[1] Marimurtra Bot Garden, Blanes, Spain
[2] Univ Barcelona, Fac Pharm, Lab Bot, BioC GReB, Barcelona, Spain
[3] Bot Inst Barcelona IBB CSIC ICUB, BioC GReB, Barcelona, Spain
[4] Gyeongsang Natl Univ, Dept Biol, Jinju, South Korea
[5] Gyeongsang Natl Univ, Res Inst Nat Sci, Jinju, South Korea
[6] Jardin Bot Hist Concepc, Malaga, Spain
关键词
allozymes; extinction; genetic structure; narrow endemic; RAPD; rare species; ENDANGERED PLANT; ALLOZYME DIVERSITY; GLACIAL REFUGIA; RAMONDA-MYCONI; RAPD MARKERS; BORDEREA; DIFFERENTIATION; DIOSCOREACEAE; CONSEQUENCES; EVOLUTION;
D O I
10.1080/17550874.2012.735270
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Background: Glandora oleifolia is one of the most narrowly restricted endemics of the Iberian Peninsula. It occurs in two locations, separated by 5 km in the south-eastern Pyrenees. The species is listed as 'vulnerable' in the Spanish Red List, and it is legally protected in Catalonia. Aims: To study the genetic diversity and population structure, and to review the conservation status and the threats to the survival of this species. Methods: The genetic variation of the two extant subpopulations was surveyed by means of allozymes and random amplification of polymorphic DNA (RAPD). Results: Both markers indicated depleted levels of genetic variability for G. oleifolia, in agreement with the expectation for endemic species, and low genetic divergence among the two subpopulations (below 10% with the two nuclear markers). Conclusions: The evolutionary history of this palaeoendemic species - repeated population bottlenecks and/or local extinction of populations during the glacial periods of the Quaternary - could have enhanced the loss of its genetic diversity.
引用
收藏
页码:501 / 511
页数:11
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