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      Development of 12 polymorphic microsatellite loci in the high alpine perennial Primula halleri (Primulaceae) 1

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          Abstract

          Premise of the study: Primula halleri is a high alpine endemic species with a patchy distribution in Central and Eastern European mountains. Little is known about the structure of genetic variation and mating system in populations of this species.

          Methods and Results: We report on the development of 12 novel, polymorphic microsatellite loci for P. halleri. Tests for amplification and polymorphism were performed on 45 individuals sampled from three populations in the Swiss Alps. Interspecific amplification of the loci was evaluated using samples of the closely related species P. farinosa, P. frondosa, and P. scotica.

          Conclusions: The results show that the new microsatellite loci will be useful to study the structure of genetic diversity and mating system of P. halleri, and possibly its closely related species.

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          Most cited references4

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          Microsatellite variation within and among North American lineages of Phragmites australis.

          Over the past century, the spread of the common reed (Phragmites australis) has had a dramatic impact on wetland communities across North America. Although native populations of Phragmites persist, introduced invasive populations have dominated many sites and it is not clear if the two types can interbreed. This study compares patterns of differentiation in 10 microsatellite loci among North American and European Phragmites individuals with results obtained from sequencing of noncoding chloroplast DNA. Three population lineages (native, introduced and Gulf Coast) were previously identified in North America from chloroplast DNA and similar structuring was found in the nuclear genome. Each lineage was distinguished by unique alleles and allele combinations and the introduced lineage was closely related to its hypothesized source population in Europe. Size homoplasy and diagnostic base substitutions distinguishing lineages were evident at several loci, further emphasizing that native, introduced and Gulf Coast North American Phragmites lineages are genetically distinct. Gene flow between lineages was low and invasive introduced populations do not represent a hybrid population type.
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            What we still don't know about polyploidy

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              Evolution of biogeographic patterns, ploidy levels, and breeding systems in a diploid-polyploid species complex of Primula.

              Primula sect. Aleuritia subsect. Aleuritia (Aleuritia) includes diploid, self-incompatible heterostyles and polyploid, self-compatible homostyles, the latter generally occurring at higher latitudes than the former. This study develops a phylogenetic hypothesis for Aleuritia to elucidate the interactions between Pleistocene glacial cycles, biogeographic patterns, ploidy levels and breeding systems. Sequences from five chloroplast DNA loci were analyzed with parsimony to reconstruct a phylogeny, haplotype network, and ancestral states for ploidy levels and breeding systems.The results supported the monophyly of Aleuritia and four major biogeographic lineages: an amphi-Pacific, a South American, an amphi-Atlantic and a European/North American lineage. At least four independent switches to homostyly and five to polyploidy were inferred. An Asian ancestor probably gave origin to an amphi-Pacific clade and to a lineage that diversified on the European and American continents. Switches to homostyly occurred exclusively in polyploid lineages, which mainly occupy previously glaciated areas. The higher success of the autogamous polyploid species at recolonizing habitats freed by glacial retreat might be explained in terms of selection for reproductive assurance.
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                Author and article information

                Journal
                Appl Plant Sci
                Appl Plant Sci
                apps
                Applications in Plant Sciences
                Botanical Society of America
                2168-0450
                December 2013
                3 December 2013
                : 1
                : 12
                : apps.1300052
                Affiliations
                [2 ]Institute of Systematic Botany, University of Zurich, Zollikerstrasse 107, 8008 Zurich, Switzerland
                [3 ]Zurich-Basel Plant Science Center, 8092 Zurich, Switzerland
                Author notes
                [1]

                The authors thank the University of Zurich and the China Scholarship Council for financial support, and Jurriaan de Vos, Spyros Theodoridis, Marilena Meloni, and Ares Jiménez for assistance with field collections, laboratory procedures, and data analysis.

                [4 ]Author for correspondence: lirui.zhang@ 123456systbot.uzh.ch
                Article
                apps1300052
                10.3732/apps.1300052
                4103119
                f0ffe870-c540-4ed8-8940-762e4796ea2b
                © 2013 Zhang et al. Published by the Botanical Society of America

                This work is licensed under a Creative Commons Attribution License (CC-BY-NC-SA).

                History
                : 11 June 2013
                : 5 August 2013
                Categories
                Primer Note

                genetic diversity,microsatellite,primula halleri,primula sect. aleuritia

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