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Discovering the type of seed dormancy and temperature requirements for seed germination of Gentiana lutea L. subsp. Lutea (Gentianaceae) / Alba Cuena-Lombraña in Journal of plant ecology, 11 (2) (04/2018) 

Public Citation [article]  inJournal of plant ecology > 11 (2) (04/2018) . - 308-316 Titre : Discovering the type of seed dormancy and temperature requirements for seed germination of Gentiana lutea L. subsp. Lutea (Gentianaceae) Type de document : Numérique Auteurs : Alba Cuena-Lombraña ; Marco Porceddu ; Caterina Angela Dettori ; Gianluigi Bacchetta Année de publication : 2018 Article en page(s) : 308-316 Langues : Anglais (eng) Mots-clés : Gentiana lutea L. subsp. lutea Résumé : Aims : There are a number of mechanisms that regulate germination; among these, seed dormancy, one of the most important, is an adaptative mechanism in plants to promote survival by dispersing germination in space and time until environmental conditions are favourable for germination. The main goals of this study were to determine the temperature requirements for seed dormancy release and germination of Gentiana lutea subsp. lutea, to identify the class and level of seed dormancy and to suggest an optimal germination protocol. Methods : Seeds belonging to two different localities were subjected to various pre-treatments, including cold stratification (0 and 5°C), warm stratification (25/10°C) and different combinations of these, and then incubated at a range of constant temperatures (5–25°C) and 25/10°C. Embryo growth during pre-treatments and incubation conditions were assessed at different times by measuring the embryo to seed length ratio (E:S ratio). The final germination percentage (FGP) and the germination rate (t50) were calculated. Important Finding : Fleshy mature seeds of G. lutea subsp. lutea have linear underdeveloped embryos. Cold stratification at 0°C was effective in overcoming the physiological dormancy (PD) and promoted embryo growth and subsequent germination. After cold stratification at 0°C, both the root and the shoot emerged readily under a wide range of temperatures. G. lutea subsp. lutea seeds showed an intermediate complex morphophysiological dormancy (MPD). As regards the optimal germination protocol for this taxon, we suggest a period of cold stratification at ca. 0°C followed by seed incubation at 10–20°C. The optimal germination temperatures found for seeds of this taxon, as well as its pre-chilling requirement at 0°C, suggest that it is well adapted to a temperate climate; this behavior highlights an increasing threat from global warming for G. lutea, which could reduce the level of natural emergence in the field, prejudicing also the long-term persistence of the natural populations in Sardinia. Identifiant : DOI : 10.1093/jpe/rtx003 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=143151 Cuena-Lombraña, Alba, Porceddu, Marco, Dettori, Caterina Angela, Bacchetta, Gianluigi 2018 Discovering the type of seed dormancy and temperature requirements for seed germination of Gentiana lutea L. subsp. Lutea (Gentianaceae). Journal of plant ecology, 11(2): 308-316.

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Consultable Article (2018) URL

Status and future of seed conservation of threatened plants in the post-2020 era / Andreas Ensslin in Plants, People, Planet, (2026) 

Public Citation [article]  inPlants, People, Planet > (2026) . - 1-15 Titre : Status and future of seed conservation of threatened plants in the post-2020 era Type de document : Numérique Auteurs : Andreas Ensslin ; Adelaide Clemente ; Liu Udayangani ; Elke Zippel ; Carla Pinto-Cruz ; Carolina Sanchez Romero ; Simone Schneider ; Augustí Agut ; Charlotte Allender ; Külli Annama ; Marina Antic ; Bertille Asset ; Gianluigi Bacchetta ; Oz Baranzani ; Anamaria Barata ; Philippe Bardin ; Joze Bavcon ; Anabela D. F. Belo ; Marina Belovarska ; Karim Benkhelifa ; Christian Berg ; Karl-Georg Bernhardt ; Marcin Beza ; Kristina Bjureke ; Sina Bohm ; Peter Borgmann ; Josep Borrell ; Stéphane Buord ; Jocelyne Cambecèdes ; Francesca Carruggio ; Angelino Carta ; Pedro Casimiro ; Ted Chapman ; Iveta Cicova ; Régis Crisnaire ; Antonia Cristaudo ; Lucia De la Rosa ; Maîte Delmas ; Gergana Desheva ; Valter Di Cecco ; Luciano Di Martino ; Katia Diadema (1980-) ; Lara Dixon ; Denise Dostatny ; Marie Duval ; Roland K. Eberwein ; Mikel Etxeberria Okariz ; Caroline Favier ; Nick Fenby ; Mariana P. Fernandes ; Immaculada Ferrando-Pardo ; Pablo Ferrer ; Noémie Fort ; Luigi Forte ; Catia F. Freitas ; Agnese Gailite ; Katarzyna Galej-Ciwis ; Rosa Maria Garcia ; Ana Irene García del Bao ; Catherine Gautier ; Bronislovas Gelvonauskis ; Gian Petro Guisso del Galdo ; Miguel Angel González-Pérez ; Johan Gourvil ; Luisa Gouveia ; Thierry Helminger ; Brais Hermosilla Lorenzo ; Laetitia Hugot ; Marko Hyvärinen ; Ignac Janzekovic ; Andreas König ; Nikos Krigas ; Emilio Laguna ; Ludivine Lapebie ; Denis Larpin ; Maja Lazarević ; Dikla Lifshitz ; Vincent Lipa ; Carlos Lobo ; Ulrike Lohwasser ; Sandrine Loriot ; Sara Magrini ; Francesca Mantino ; Mauro Mariotti ; Evi Matiatou ; Lubomir Mendel ; Marine Millet ; Mari Miranto ; Andréa Mondoni ; Santiago Moreno Vásquez ; Valeria Negri ; Peter Nick ; Maciej Niemczyk ; Humberto Nobrega ; Pawel Olejniczak ; Małgorzata Pałucka ; Katerina Papanastasi ; Ioanna Papanikolaou ; Miguel A. A. Pinheiro de Carvalho ; Marco Porceddu ; Sotirios Porevis ; Peter Poschlod ; Lorenzo Raggi ; Sarmite Rancane ; Leonid Rasran ; Blanka Ravnjak ; Stéphane Rivière (1972-) ; Axelle Roumier ; Anna Rucinska ; Félix Schlatti ; Marco Schmidt ; Guy Seznec ; Manuela Sim-Sim ; Ana Luisa Soares ; Nora Stoeckl ; Silvia Strajeru ; Gitana Stukeniene ; Andrej Susek ; Andreas Titze ; Sarah Trinder ; Zlatina Tsvetanova ; Théo Van Hintum ; Nils (van) Rooijen ; Magdalena Vicens ; Mariacristina Villani ; Silvia Villegas ; Fiona J. White ; Sabine Zachago ; Elena Zappa ; Vince Zsigmond ; Sandrine Godefroid Année de publication : 2026 Article en page(s) : 1-15 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Conservation et gestion des espèces [CBNPMP-Thématique] Semences Résumé : Societal Impact Statement Ambitious targets have been set to backup seeds of threatened plants by the global strategy for plant conservation (GSPC), but it is unclear in how far these targets have been met and how seed collection should be organized to meet future challenges. Here, we provide an overview of the status of 44 countries in achieving seed conservation targets. We show that progress varies strongly across countries, but in general, targets of the 2011–2020 GSCP have not been reached. By a regional example, we illustrate how seed collection could be organized to safeguard our threatened flora. Summary Seed banking of wild plants is a central pillar of conservation strategies for threatened plants. Target 8 of the Global Strategy for Plant Conservation (GSPC) called for at least 75% of threatened plant species to be conserved ex situ by 2020, but to what extent countries have achieved this target is unclear. Consequently, it is unknown how seed banking should be organized in future to safeguard plant diversity and support the increasing demand for seeds for habitat restoration. We conducted a comprehensive survey across 44 countries in Europe and western Asia and collected information on seed bank stocks of native taxa. We harmonized the taxonomic names across the collections and matched them against a database of national plant Red Lists to assign each taxon its IUCN (International Union for Conservation of Nature) threat status in its country of origin. We analysed each country's achievement in terms of the conservation of its threatened flora and evaluated the quality of the collections in terms of genetic representativeness and seed quantity. We found that none of the studied countries had reached Target 8 of the GSPC by 2020. While a few countries had come close to it, on average only 21% of threatened taxa were conserved across countries. Our results demonstrate that the current seed conservation strategy has not met conservation demands. Using an example from Belgium, where considerable progress has been achieved by investing in a network of volunteer seed collectors, we show how future seed collection could be organized in collaborative community-based approaches. Identifiant : DOI : 10.1002/ppp3.70177 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=155992 Ensslin, Andreas, Clemente, Adelaide, Udayangani, Liu, Zippel, Elke, Pinto-Cruz, Carla, Sanchez Romero, Carolina, Schneider, Simone, Agut, Augustí, Allender, Charlotte, Annama, Külli, Antic, Marina, Asset, Bertille, Bacchetta, Gianluigi, Baranzani, Oz, Barata, Anamaria, Bardin, Philippe, Bavcon, Joze, Belo, Anabela D. F., Belovarska, Marina, Benkhelifa, Karim, Berg, Christian, Bernhardt, Karl-Georg, Beza, Marcin, Bjureke, Kristina, Bohm, Sina, Borgmann, Peter, Borrell, Josep, Buord, Stéphane, Cambecèdes, Jocelyne, Carruggio, Francesca, Carta, Angelino, Casimiro, Pedro, Chapman, Ted, Cicova, Iveta, Crisnaire, Régis, Cristaudo, Antonia, De la Rosa, Lucia, Delmas, Maîte, Desheva, Gergana, Di Cecco, Valter, Di Martino, Luciano, Diadema, Katia (1980-), Dixon, Lara, Dostatny, Denise, Duval, Marie, Eberwein, Roland K., Etxeberria Okariz, Mikel, Favier, Caroline, Fenby, Nick, Fernandes, Mariana P., Ferrando-Pardo, Immaculada, Ferrer, Pablo, Fort, Noémie, Forte, Luigi, Freitas, Catia F., Gailite, Agnese, Galej-Ciwis, Katarzyna, Garcia, Rosa Maria, García del Bao, Ana Irene, Gautier, Catherine, Gelvonauskis, Bronislovas, Guisso del Galdo, Gian Petro, González-Pérez, Miguel Angel, Gourvil, Johan, Gouveia, Luisa, Helminger, Thierry, Hermosilla Lorenzo, Brais, Hugot, Laetitia, Hyvärinen, Marko, Janzekovic, Ignac, König, Andreas, Krigas, Nikos, Laguna, Emilio, Lapebie, Ludivine, Larpin, Denis, Lazarević, Maja, Lifshitz, Dikla, Lipa, Vincent, Lobo, Carlos, Lohwasser, Ulrike, Loriot, Sandrine, Magrini, Sara, Mantino, Francesca, Mariotti, Mauro, Matiatou, Evi, Mendel, Lubomir, Millet, Marine, Miranto, Mari, Mondoni, Andréa, Moreno Vásquez, Santiago, Negri, Valeria, Nick, Peter, Niemczyk, Maciej, Nobrega, Humberto, Olejniczak, Pawel, Pałucka, Małgorzata, Papanastasi, Katerina, Papanikolaou, Ioanna, Pinheiro de Carvalho, Miguel A. A., Porceddu, Marco, Porevis, Sotirios, Poschlod, Peter, Raggi, Lorenzo, Rancane, Sarmite, Rasran, Leonid, Ravnjak, Blanka, Rivière, Stéphane (1972-), Roumier, Axelle, Rucinska, Anna, Schlatti, Félix, Schmidt, Marco, Seznec, Guy, Sim-Sim, Manuela, Soares, Ana Luisa, Stoeckl, Nora, Strajeru, Silvia, Stukeniene, Gitana, Susek, Andrej, Titze, Andreas, Trinder, Sarah, Tsvetanova, Zlatina, Van Hintum, Théo, Rooijen, Nils (van), Vicens, Magdalena, Villani, Mariacristina, Villegas, Silvia, White, Fiona J., Zachago, Sabine, Zappa, Elena, Zsigmond, Vince, Godefroid, Sandrine 2026 Status and future of seed conservation of threatened plants in the post-2020 era. Plants, People, Planet: 1-15.

Documents numériques

Consultable article (2026) URL