Genetic structure of peripheral, island-like populations: a case study of Saponaria bellidifolia Sm. (Caryophyllaceae) from the Southeastern Carpathians

被引：22

作者：

Csergoe, Anna-Maria ^{[1
]}

Schoenswetter, Peter ^{[2
]}

Mara, Gyoengyver ^{[3
]}

Deak, Tamas ^{[4
]}

Boscaiu, Nicolae ^{[5
]}

Hoehn, Maria ^{[4
]}

机构：

[1] Sapientia Hungarian Univ Transylvania, Dept Hort, Fac Tech & Human Sci, Targu Mures 540845, Romania

[2] Univ Vienna, Dept Biogeog & Bot Garden, Fac Ctr Bot, A-1030 Vienna, Austria

[3] Sapientia Hungarian Univ Transylvania, Fac Tech & Social Sci, Miercurea Ciuc 530104, Romania

[4] Corvinus Univ, Dept Plant Genet, Fac Hort, H-1118 Budapest, Hungary

[5] Romanian Acad Sci, Dept Cluj Napoca, Inst Biol, Cluj Napoca 400015, Romania

来源：

PLANT SYSTEMATICS AND EVOLUTION | 2009年 / 278卷 / 1-2期

关键词：

Genetic diversity; Naturally fragmented habitats; Peripheral populations; Apuseni Mountains; Romania; Saponaria bellidifolia; RAPD; AFLP; LENGTH POLYMORPHISM MARKERS; PLEISTOCENE REFUGIA; GEOGRAPHICAL RANGE; PLANT-POPULATIONS; PERENNIAL HERB; MATING SYSTEM; ALPINE PLANT; CONSERVATION; DIVERSITY; SIZE;

D O I：

10.1007/s00606-008-0129-5

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Geographically peripheral populations often experience a reduction of genetic diversity and divergence from the core populations. Habitat geometry and quality can induce a local genetic diversity pattern, which overlies the regional variability issued from the range-wide phylogeography. We evaluated the genetic variation and genetic divergence of Saponaria bellidifolia Sm. on limestone outcrops within peripheral island-like populations from the Southeastern Carpathians, using RAPD markers. We also determined the degree of isolation related to other European populations, using AFLP. The Romanian populations had a decreased overall genetic diversity shared among populations, with lower level in small populations. Potential habitat size had a positive effect on genetic diversity estimates. Fisher's exact tests of genetic differentiation revealed significant divergences only between the geographically most distant populations. Romanian populations were genetically pauperised as compared to Bulgarian and Italian populations and our results suggest that they might have originated from a recent range expansion from southern glacial refugia.

引用

页码：33 / 41

页数：9

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