Contemporary gene flow and mating system of Arabis alpina in a Central European alpine landscape

被引:39
作者
Buehler, D. [1 ,2 ]
Graf, R. [1 ]
Holderegger, R. [1 ,2 ]
Gugerli, F. [1 ]
机构
[1] WSL Swiss Fed Res Inst, CH-8903 Birmensdorf, Switzerland
[2] ETH, Inst Integrat Biol, CH-8092 Zurich, Switzerland
关键词
Alpine; Arabis alpina; contemporary gene flow; genetic structure; mating system; paternity analysis; pollen dispersal; spatial autocorrelation; SPATIAL AUTOCORRELATION ANALYSIS; LOCAL ADAPTATION; PATERNITY INFERENCE; POLLEN FLOW; PLANT; POPULATION; HISTORY; CONSEQUENCES; DIVERSITY; SELECTION;
D O I
10.1093/aob/mcs066
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Gene flow is important in counteracting the divergence of populations but also in spreading genes among populations. However, contemporary gene flow is not well understood across alpine landscapes. The aim of this study was to estimate contemporary gene flow through pollen and to examine the realized mating system in the alpine perennial plant, Arabis alpina (Brassicaceae). An entire sub-alpine to alpine landscape of 2 km(2) was exhaustively sampled in the Swiss Alps. Eighteen nuclear microsatellite loci were used to genotype 595 individuals and 499 offspring from 49 maternal plants. Contemporary gene flow by pollen was estimated from paternity analysis, matching the genotypes of maternal plants and offspring to the pool of likely father plants. Realized mating patterns and genetic structure were also estimated. Paternity analysis revealed several long-distance gene flow events (1 km). However, most outcrossing pollen was dispersed close to the mother plants, and 84 of all offspring were selfed. Individuals that were spatially close were more related than by chance and were also more likely to be connected by pollen dispersal. In the alpine landscape studied, genetic structure occurred on small spatial scales as expected for alpine plants. However, gene flow also covered large distances. This makes it plausible for alpine plants to spread beneficial alleles at least via pollen across landscapes at a short time scale. Thus, gene flow potentially facilitates rapid adaptation in A. alpina likely to be required under ongoing climate change.
引用
收藏
页码:1359 / 1367
页数:9
相关论文
共 70 条
[1]   History or ecology? Substrate type as a major driver of patial genetic structure in Alpine plants [J].
Alvarez, Nadir ;
Thiel-Egenter, Conny ;
Tribsch, Andreas ;
Holderegger, Rolf ;
Manel, Stephanie ;
Schoenswetter, Peter ;
Taberlet, Pierre ;
Brodbeck, Sabine ;
Gaudeul, Myriam ;
Gielly, Ludovic ;
Kuepfer, Philippe ;
Mansion, Guilhem ;
Negrini, Riccardo ;
Paun, Ovidiu ;
Pellecchia, Marco ;
Rioux, Delphine ;
Schuepfer, Fanny ;
Van Loo, Marcela ;
Winkler, Manuela ;
Gugerli, Felix .
ECOLOGY LETTERS, 2009, 12 (07) :632-640
[2]   Genetic discontinuity, breeding-system change and population history of Arabis alpina in the Italian Peninsula and adjacent Alps [J].
Ansell, S. W. ;
Grundmann, M. ;
Russell, S. J. ;
Schneider, H. ;
Vogel, J. C. .
MOLECULAR ECOLOGY, 2008, 17 (09) :2245-2257
[3]   SELF-INCOMPATIBILITY SYSTEMS IN ANGIOSPERMS .2. IBERIS-AMARA [J].
BATEMAN, AJ .
HEREDITY, 1954, 8 (03) :305-332
[4]   Genetic diversify in alpine and foothill populations of Campanula rotundifolia (Campanulaceae) [J].
Bingham, RA ;
Ranker, TA .
INTERNATIONAL JOURNAL OF PLANT SCIENCES, 2000, 161 (03) :403-411
[5]   Efficient pollination of alpine plants [J].
Bingham, RA ;
Ort, AR .
NATURE, 1998, 391 (6664) :238-239
[6]  
BLISS L. C., 1962, ARCTIC, V15, P117
[7]  
Bliss L. C., 1971, Annual review of ecology and systematics. Volume 2., P405, DOI 10.1146/annurev.es.02.110171.002201
[8]   The influence of distinct pollinators on female and male reproductive success in the Rocky Mountain columbine [J].
Brunet, Johanne ;
Holmquist, Karsten G. A. .
MOLECULAR ECOLOGY, 2009, 18 (17) :3745-3758
[9]   USING THE 454 PYROSEQUENCING-BASED TECHNIQUE IN THE DEVELOPMENT OF NUCLEAR MICROSATELLITE LOCI IN THE ALPINE PLANT ARABIS ALPINA (BRASSICACEAE) [J].
Buehler, Dominique ;
Graf, Rene ;
Holderegger, Rolf ;
Gugerli, Felix .
AMERICAN JOURNAL OF BOTANY, 2011, 98 (05) :E103-E105
[10]   Local adaptation and cogradient selection in the alpine plant, Poa hiemata, along a narrow altitudinal gradient [J].
Byars, Sean G. ;
Papst, Warwick ;
Hoffmann, Ary A. .
EVOLUTION, 2007, 61 (12) :2925-2941