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Genetic consequences of long-term isolation for the last French population of Eryngium viviparum (Apiaceae) / Pauline Rascle in Botanical Journal of the Linnean Society, vol. 191, n°8 (Année 2019)

Public [article]  inBotanical Journal of the Linnean Society > vol. 191, n°8 (Année 2019) . - pp. 285-298 Titre : Genetic consequences of long-term isolation for the last French population of Eryngium viviparum (Apiaceae) Type de document : texte imprimé Auteurs : Pauline Rascle, Auteur ; Elodie Flaven, Auteur ; Frédéric Bioret, Auteur ; Sylvie Magnanon, Auteur ; Erwan Glemarec, Auteur ; Sébastien Gallet, Auteur ; Eric Imbert, Auteur Année de publication : 2019 Article en page(s) : pp. 285-298 Langues : Anglais (eng) Catégories : [Espèces (in biblio)] Eryngium viviparum Mots-clés : conservation génétique  plante menacée  microsatellite Résumé : "Eryngium viviparum (Apiaceae) is an endangered endemic plant of the Atlantic region of Europe, growing in seasonally flooded sites, and is characterized by a highly disjunct distribution. It occurs in just a few sites in the north-western part of the Iberian Peninsula and in a single locality in France. To improve the conservation status of E. viviparum in France, a conservation programme has been implemented to reintroduce the species. Before considering such an operation, genetic studies were conducted to determine the genetic status of the last French population and to identify the genetic source that should be considered for the best reintroduction strategy. Using microsatellite markers, we documented the genetic structure of the last French population and compared its genetic diversity with that of ten Iberian populations, which cover the three geographical regions where the species occurs. As expected, the French population of E. viviparum shows low genetic diversity due to a bottleneck and geographical isolation. The evolutionary potential appears low, with no private alleles in this population. Furthermore, this population is highly differentiated from the Iberian populations in terms of genetic variation and ecological niche. These results bring new questions regarding the conservation of E. viviparum in France, especially for management and reintroduction aimed at favouring genetic diversity and avoiding extinction." (source : auteurs) Type de publication : périodique Référence biblio : Rascle P., Flaven E., Bioret F., Magnanon S., Glemarec E., Gallet S., Imbert E., 2019 - Genetic consequences of long-term isolation for the last French population of Eryngium viviparum (Apiaceae). Botanical Journal of the Linnean Society, 191 (8) : 285-298. ID PMB : 69172 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=69172 [article]

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How much do we know and how much do we care about genetic diversity of threatened plants ? A case study from the French flora / Juliette Ducrettet in Botany letters, vol. 170, n°1 (Année 2023)

Public [article]  inBotany letters > vol. 170, n°1 (Année 2023) . - pp. 110-118 Titre : How much do we know and how much do we care about genetic diversity of threatened plants ? A case study from the French flora Type de document : texte imprimé Auteurs : Juliette Ducrettet, Auteur ; Sandrine Maurice, Auteur ; Eric Imbert, Auteur Année de publication : 2023 Article en page(s) : pp. 110-118 Langues : Anglais (eng) Catégories : [ZG] France [Thèmes] Conservation [Thèmes] Plante à forte valeur patrimoniale Mots-clés : diversité génétique  plante menacée Résumé : "Small demographic size and reduced genetic diversity increase the extinction probability of a population. Genetic diversity within populations for neutral markers is an heuristic parameter, as it reflects past and ongoing processes acting on populations, and informs on possible futures. This study presents a synthesis of the knowledge on neutral genetic diversity for threatened plants in metropolitan France and the use of such data in management actions. Pairing threatened species with the closest non-threatened species for which we could find appropriate genetic data, we collected information on genetic diversity for 25 threatened species and non-threatened controls. We found that threatened species in France have on average a lower within-population genetic diversity than non-threatened controls and thus are exposed to risks linked to genetic erosion. Combining an analysis of recovery plans and a survey addressed to practitioners, we concluded that genetic diversity is rarely integrated in management actions. The integration of such information into applied conservation remains a challenge. We provide some guidelines to collect biological traits impacting within-population genetic diversity and some specific recommendations for a better incorporation of population genetics concepts into conservations actions." (source : auteurs) Type de publication : périodique Référence biblio : Ducrettet J., Maurice S., Imbert E., 2023 - How much do we know and how much do we care about genetic diversity of threatened plants ? A case study from the French flora. Botany letters, 170 (1) : 110-118. ID PMB : 71605 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=71605 [article]

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P0177-6	Brest	Disponible

Reproductive isolation between populations of Iris atropurpurea is associated with ecological differentiation / Gil Yardeni in Annals of Botany, vol. 118, n°5 (Année 2016)

Public [article]  inAnnals of Botany > vol. 118, n°5 (Année 2016) . - pp. 971-982 Titre : Reproductive isolation between populations of Iris atropurpurea is associated with ecological differentiation Type de document : texte imprimé Auteurs : Gil Yardeni, Auteur ; Naama Tessler, Auteur ; Eric Imbert, Auteur ; Yuval Sapir, Auteur Année de publication : 2016 Article en page(s) : pp. 971-982 Langues : Anglais (eng) Catégories : [ZG] Israël / Palestine [Espèces (in biblio)] Iris Mots-clés : génétique des populations  hybridation  espèce végétale protégée Résumé : "Our results indicate that the rise of post-pollination reproductive barriers in I. atropurpurea is more affected by ecological differentiation between populations than by geographical distance, supporting the hypothesis that ecological differentiation is predominant over isolation by distance and by reduced gene flow in this species. These findings also affect conservation management, such as genetic rescue, in the highly fragmented and endangered I. atropurpurea." (source : auteurs) Type de publication : périodique Référence biblio : Yardeni G., Tessler N., Imbert E., Sapir Y., 2016 - Reproductive isolation between populations of Iris atropurpurea is associated with ecological differentiation. Annals of Botany, 118 (5) : 971-982. ID PMB : 64400 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=64400 [article]

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