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  1. Article: Genetic status of the endangered plant species Gladiolus palustris in the western part of its distribution area

    Daco, Laura / Maurice, Tiphaine / Muller, Serge / Rossa, Julie / Colling, Guy

    Conservation genetics. 2019 Dec., v. 20, no. 6

    2019  

    Abstract: Many endangered plant species suffer from the effects of ongoing fragmentation of their populations leading to a loss of genetic diversity through genetic drift. In addition, populations of rare plants may also be affected by hybridization with other ... ...

    Abstract Many endangered plant species suffer from the effects of ongoing fragmentation of their populations leading to a loss of genetic diversity through genetic drift. In addition, populations of rare plants may also be affected by hybridization with other plant species. We studied the genetic population structure of populations of the endangered Gladiolus palustris in the western limit of its distribution area using AFLP markers. In addition, we clarified the taxonomic status of populations where hybridization with the closely related G. imbricatus was suspected based on morphology by sequencing the ITS region of the nuclear ribosomal DNA as well as two regions of the chloroplast DNA. Our analysis of the genetic population structure of G. palustris revealed a strong differentiation among geographical regions, which was much higher than the differentiation among populations within regions. Most populations retained a considerable amount of genetic variation. To counteract the future loss of genetic diversity through drift, we recommend using the largest populations per region as seed source to increase genetic diversity in genetic depauperate populations of the same region. Our genetic analyses indicated that some French populations of G. palustris are of hybrid origin. These hybridization events are likely to be ancient as these populations are very isolated and some parent taxa went regionally extinct. As these hybrid populations may elucidate post-glacial distribution patterns of related Gladiolus taxa, we advocate that they deserve the same conservation efforts as purebred ones.
    Keywords Gladiolus ; amplified fragment length polymorphism ; chloroplast DNA ; endangered species ; genetic analysis ; genetic drift ; genetic markers ; genetic variation ; hybridization ; hybrids ; internal transcribed spacers ; plants (botany) ; population structure ; purebreds ; rare species ; ribosomal DNA
    Language English
    Dates of publication 2019-12
    Size p. 1339-1354.
    Publishing place Springer Netherlands
    Document type Article
    ZDB-ID 2059560-8
    ISSN 1572-9737 ; 1566-0621
    ISSN (online) 1572-9737
    ISSN 1566-0621
    DOI 10.1007/s10592-019-01213-0
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 7626: Show issues

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  2. Article: Genetic structure of colline and montane populations of an endangered plant species.

    Maurice, Tiphaine / Matthies, Diethart / Muller, Serge / Colling, Guy

    AoB PLANTS

    2016  

    Abstract: Due to land-use intensification, lowland and colline populations of many plants of nutrient-poor grasslands have been strongly fragmented in the last decades, with potentially negative consequences for their genetic diversity and persistence. Populations ...

    Abstract Due to land-use intensification, lowland and colline populations of many plants of nutrient-poor grasslands have been strongly fragmented in the last decades, with potentially negative consequences for their genetic diversity and persistence. Populations in mountains might represent a genetic reservoir for grassland plants, because they have been less affected by land-use changes. We studied the genetic structure and diversity of colline and montane Vosges populations of the threatened perennial plant Arnica montana in western central Europe using AFLP markers. Our results indicate that in contrast to our expectation even strongly fragmented colline populations of A. montana have conserved a considerable amount of genetic diversity. However, mean seed mass increased with the proportion of polymorphic loci, suggesting inbreeding effects in low diversity populations. At a similar small geographical scale there was a clear IBD pattern for the montane Vosges but not for the colline populations. However, there was a strong IBD-pattern for the colline populations at a large geographical scale suggesting that this pattern is a legacy of historical gene flow, as most of the colline populations are today strongly isolated from each other. Genetic differentiation between colline and montane Vosges populations was strong. Moreover, results of a genome scan study indicated differences in loci under selection, suggesting that plants from montane Vosges populations might be maladapted to conditions at colline sites. Our results suggest caution in using material from montane populations of rare plants for the reinforcement of small genetically depauperate lowland populations.
    Language English
    Publishing date 2016-08-12
    Publishing country England
    Document type Journal Article
    ZDB-ID 2555823-7
    ISSN 2041-2851
    ISSN 2041-2851
    DOI 10.1093/aobpla/plw057
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Habitat characteristics, stage structure and reproduction of colline and montane populations of the threatened species Arnica montana

    Maurice, Tiphaine / Colling, Guy / Muller, Serge / Matthies, Diethart

    Plant ecology. 2012 May, v. 213, no. 5

    2012  

    Abstract: Arnica montana, a characteristic plant of nutrient-poor grasslands, has strongly declined during the last decades, particularly at lower altitudes. To gain insights into the underlying reasons for this decline, we recorded differences in size, stage ... ...

    Abstract Arnica montana, a characteristic plant of nutrient-poor grasslands, has strongly declined during the last decades, particularly at lower altitudes. To gain insights into the underlying reasons for this decline, we recorded differences in size, stage structure and reproductive traits between 21 colline populations of A. montana in the Ardennes-Eifel region (280–600 m a.s.l.) and 10 montane populations in the Vosges Mountains (1,200 m a.s.l.). Community composition of the Violion caninae vegetation at colline sites and Nardion strictae vegetation at montane sites indicated that temperature and moisture were the main abiotic factors differentiating between low and high altitudinal relevées. The proportion of flowering rosettes decreased with altitude, indicating a shift from sexual reproduction to clonal growth. In contrast to expectation, Ellenberg values for nutrient availability as well as the proportion of young rosettes and population size did not differ between colline and montane populations. However, population size decreased with nutrient availability, indicating eutrophication as the reason for population decline. In small populations, plant density, the proportion of flowering rosettes, the number of flowerheads per rosette and the number of seeds per flowerhead were lower, indicating less suitable conditions. Thus, preventing further eutrophication in both colline and montane populations will be crucial for the conservation of the species. Reduced reproduction may not be important for the population dynamics of this clonal plant in the short term, but could affect genetic diversity and survival in the long term.
    Keywords Arnica montana ; altitude ; asexual reproduction ; community structure ; eutrophication ; genetic variation ; grasslands ; habitats ; mountains ; nutrient availability ; nutritive value ; plant characteristics ; plant density ; population dynamics ; population size ; reproductive traits ; seeds ; sexual reproduction ; temperature ; threatened species
    Language English
    Dates of publication 2012-05
    Size p. 831-842.
    Publishing place Springer-Verlag
    Document type Article
    ZDB-ID 1364679-5
    ISSN 1573-5052 ; 1385-0237
    ISSN (online) 1573-5052
    ISSN 1385-0237
    DOI 10.1007/s11258-012-0045-1
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 71/747: Show issues

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