trié(s) par (Pertinence décroissant(e), Titre croissant(e)) 

Comparative seed dormancy and germination of eight annual species of ephemeral wetland vegetation in a Mediterranean climate / Angelino Carta in Plant ecology, vol. 214 (Année 2013)

Public [article]  inPlant ecology > vol. 214 (Année 2013) . - pp. 339-349 Titre : Comparative seed dormancy and germination of eight annual species of ephemeral wetland vegetation in a Mediterranean climate Type de document : texte imprimé Auteurs : Angelino Carta, Auteur ; Gianni Bedini, Auteur ; Jonas V. Müller, Auteur ; Robin J. Probert, Auteur Année de publication : 2013 Article en page(s) : pp. 339-349 Langues : Anglais (eng) Catégories : [Thèmes] Dormance des graines [Thèmes] Germination des graines Mots-clés : mare temporaire Résumé : "Ephemeral wetland vegetation (EWV) in the Mediterranean Basin appears in temporary wetlands where favourable hydrological conditions exist only for a short time and year-to-year variability is high. Here, we report results of the seed germination, dormancy and desiccation tolerance of eight annual species living in this vulnerable habitat. Experiments were performed in laboratory conditions under constant and alternating temperatures and using a 12-h daily photoperiod or continuous darkness. Whilst germination and dormancy differed between the species, seeds demonstrated an absolute light requirement and prefer cool temperatures to germinate (mean ≤15 °C). Logistic regression analysis showed significant effects of alternating temperature in all the species except in Tillaea vaillantii whose germination was stimulated by constant temperature. Mean temperature was a significant term in the logistic models for the dormant species Cicendia filiformis, Linum radiola and T. vaillantii for which after-ripening was an effective dormancy-breaking treatment. From these results we infer three strategies of regeneration by seeds: (1) species germinating during the whole vegetative season (2) species germinating in a narrow temperature niche and (3) species requiring flooding (T. vaillantii). Seeds possessed orthodox storage behaviour (tolerating drying to 15 % relative humidity) and may be amenable to seed banking as a means of ex-situ conservation. We conclude that EWV species are adapted to the irregular presence of water with characteristics that are typical of neither truly aquatic nor wetland plants. These EWV species showed a more plastic germination response based on alternating and constant temperature sensitivity and a low proportion of dormant seeds." (source : auteurs) Type de publication : périodique Référence biblio : Carta A., Bedini G., Müller J., Probert R.-J., 2013 - Comparative seed dormancy and germination of eight annual species of ephemeral wetland vegetation in a Mediterranean climate. Plant ecology, 214 : 339-349. ID PMB : 70799 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=70799 [article]

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Seed regeneration in Mediterranean temporary ponds: germination ecophysiology and vegetation processes / Angelino Carta in Hydrobiologia, vol. 782 (Année 2016)

Public [article]  inHydrobiologia > vol. 782 (Année 2016) . - pp. 23-35 Titre : Seed regeneration in Mediterranean temporary ponds: germination ecophysiology and vegetation processes Type de document : texte imprimé Auteurs : Angelino Carta, Auteur Année de publication : 2016 Article en page(s) : pp. 23-35 Langues : Anglais (eng) Catégories : [habitats/milieux] 2 - Milieux aquatiques non marins [habitats/milieux] ZH - Zones humides [Thèmes] Banque de graines [Thèmes] Banque de graines du sol [Thèmes] Dormance des graines [Thèmes] Germination des graines Résumé : "Mediterranean temporary ponds (MTPs) are very specialised and threatened habitats found in Mediterranean-like bioclimates worldwide. MTPs have received considerable attention over the past years because of the multiple ecological roles they play in the landscape. Nevertheless, seed germination, dormancy, and desiccation tolerance of species living in MTPs are poorly investigated. Here, we reviewed these topics and found that seed germination data exist for only 48 species. While dormancy differs among the species, germination mostly depends on cool temperatures (<15°C) which are associated with the main rainfall season and on the light triggering germination in seeds located close to the soil surface and resulting in the persistence of buried seeds until disturbances occur. Most species seem amenable to seed banking as a means of ex situ conservation but a worldwide comparative study is required to better understand seed lifespan in MTPs. In general, these species exhibit a Mediterranean germination syndrome and plastic germination response that is typical of neither truly aquatic nor wetland plants. The importance of conducting ecologically meaningful germination studies, including germination experiments conducted in the field has been highlighted to gain further insights into the dynamic processes in the vegetation and to test for convergent evolution." (source : auteur) Type de publication : périodique Référence biblio : Carta A., 2016 - Seed regeneration in Mediterranean temporary ponds: germination ecophysiology and vegetation processes. Hydrobiologia, 782 : 23-35. ID PMB : 70792 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=70792 [article]

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Selecting the best candidates for resurrecting extinct-in-the-wild plants from herbaria / Giulia Albani Rocchetti in Nature Plants, vol. 8 (Année 2022)

Public [article]  inNature Plants > vol. 8 (Année 2022) . - pp. 1385–1393 Titre : Selecting the best candidates for resurrecting extinct-in-the-wild plants from herbaria Type de document : texte imprimé Auteurs : Giulia Albani Rocchetti, Auteur ; Angelino Carta, Auteur ; Andrea Mondoni, Auteur ; Sandrine Godefroid, Auteur ; Charles Davis, Auteur ; Giulia Caneva, Auteur ; Matthew A. Albrecht, Auteur ; Karla Alvarado, Auteur ; Roxali Bijmoer, Auteur ; Renata Borosova, Auteur ; Christian Bräeuchler, Auteur ; Elinor Breman, Auteur ; Marie Briggs, Auteur ; Stéphane Buord, Auteur ; Lynette H. Cave, Auteur ; Nílber Gonçalves Da Silva, Auteur ; Alexandra H. Davey, Auteur ; Rachael M. Davies, Auteur ; John Dickie, Auteur ; Melodina Fabillo, Auteur ; Andreas Fleischmann, Auteur ; Andrew Franks, Auteur ; Geoffrey Hall, Auteur ; Gintaras Kantvilas, Auteur ; Cornelia Klak, Auteur ; Udayangani Liu, Auteur ; Leopoldo Medina, Auteur ; Lars Gunnar Reinhammar, Auteur ; Ramagwai J. Sebola, Auteur ; Ines Schönberger, Auteur ; Patrick Sweeney, Auteur ; Hermann Voglmayr, Auteur ; Adam White, Auteur ; Jan J. Wieringa, Auteur ; Elke Zippel, Auteur ; Thomas Abeli, Auteur Année de publication : 2022 Article en page(s) : pp. 1385–1393 Note générale : Published : 19 December 2022 Langues : Anglais (eng) Catégories : [Thèmes] Herbier Mots-clés : espèce végétale éteinte  désextinction  programme de recherche  méthodologie Résumé : "Resurrecting extinct species is a fascinating and challenging idea for scientists and the general public. Whereas some theoretical progress has been made for animals, the resurrection of extinct plants (de-extinction sensu lato) is a relatively recently discussed topic. In this context, the term ‘de-extinction’ is used sensu lato to refer to the resurrection of ‘extinct in the wild’ species from seeds or tissues preserved in herbaria, as we acknowledge the current impossibility of knowing a priori whether a herbarium seed is alive and can germinate. In plants, this could be achieved by germinating or in vitro tissue-culturing old diaspores such as seeds or spores available in herbarium specimens. This paper reports the first list of plant de-extinction candidates based on the actual availability of seeds in herbarium specimens of globally extinct plants. We reviewed globally extinct seed plants using online resources and additional literature on national red lists, resulting in a list of 361 extinct taxa. We then proposed a method of prioritizing candidates for seed-plant de-extinction from diaspores found in herbarium specimens and complemented this with a phylogenetic approach to identify species that may maximize evolutionarily distinct features. Finally, combining data on seed storage behaviour and longevity, as well as specimen age in the novel ‘best de-extinction candidate’ score (DEXSCO), we identified 556 herbarium specimens belonging to 161 extinct species with available seeds. We expect that this list of de-extinction candidates and the novel approach to rank them will boost research efforts towards the first-ever plant de-extinction." (source : auteurs) Type de publication : périodique Référence biblio : Albani Rocchetti G., Carta A., Mondoni A., Godefroid S., Davis C., Caneva G., Albrecht M., Alvarado K., Bijmoer R., Borosova R., Bräeuchler C., Breman E., Briggs M., Buord S., Cave L., Gonçalves Da Silva N., Davey A., Davies R., Dickie J., Fabillo M., Fleischmann A., Franks A., Hall G., Kantvilas G., Klak C., Liu U., Medina L., Reinhammar L., Sebola R., Schönberger I., Sweeney P., Voglmayr H., White A., Wieringa J., Zippel E., Abeli T., 2022 - Selecting the best candidates for resurrecting extinct-in-the-wild plants from herbaria. Nature Plants, 8 : 1385–1393. ID PMB : 70590 DOI : 10.1038/s41477-022-01296-7 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=70590 [article]

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