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Comparative germination responses to water potential across different populations of Aegilops geniculata and cultivar varieties of Triticum durum and Triticum aestivum / Simone Orsenigo in Plant biology, vol. 19, n°2 (Mars 2017)

Public [article]  inPlant biology > vol. 19, n°2 (Mars 2017) . - pp. 165-171 Titre : Comparative germination responses to water potential across different populations of Aegilops geniculata and cultivar varieties of Triticum durum and Triticum aestivum Type de document : texte imprimé Auteurs : Simone Orsenigo, Auteur ; Filippo Guzzon, Auteur ; Thomas Abeli, Auteur ; Graziano Rossi, Auteur ; I. Vagge, Auteur ; Alma Balestrazzi, Auteur ; Andrea Mondoni, Auteur ; Jonas V. Müller, Auteur Année de publication : 2017 Article en page(s) : pp. 165-171 Langues : Anglais (eng) Résumé : "Crop Wild Relatives are often used to improve crop quality and yields because they contain genetically important traits that can contribute to stress resistance and adaptation. Seed germination of different populations of Aegilops geniculata Roth collected along a latitudinal gradient was studied under different drought stress in order to find populations suitable for improving drought tolerance in wheat. Different accessions of Aegilops neglecta Req. ex Bertol., Triticum aestivum L. and T. durum Desf. were used as comparison. Under full hydration, germination was high in all populations, but increasing drought stress led to reduced and delayed germination. Significant differences in final germination and mean time to germinate were detected among populations. Wheat, durum wheat and the southern population of Ae. geniculata were not significantly affected by drought stress, germinating similarly under all treatments. However, seed germination of the northern populations of Ae. geniculata was significantly reduced under high water stress treatment. Differences between populations of the same species could not be explained by annual rainfall across populations' distributions, but by rainfall during seed development and maturation. Differences in the germination responses to drought found here highlight the importance of source populations as criteria for genotype selection for pre-breeders" Type de publication : périodique Référence biblio : Orsenigo S., Guzzon F., Abeli T., Rossi G., Vagge I., Balestrazzi A., Mondoni A., Müller J., 2017 - Comparative germination responses to water potential across different populations of Aegilops geniculata and cultivar varieties of Triticum durum and Triticum aestivum. Plant biology, 19 (2) : 165-171. DOI : 10.1111/plb.12528 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=66296 [article]

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Ex situ collections and their potential for the restoration of extinct plants / Thomas Abeli in Conservation Biology, vol. 34, n°2 (Année 2020)

Public [article]  inConservation Biology > vol. 34, n°2 (Année 2020) . - pp. 303-313 Titre : Ex situ collections and their potential for the restoration of extinct plants Type de document : texte imprimé Auteurs : Thomas Abeli, Auteur ; Sarah Dalrymple, Auteur ; Sandrine Godefroid, Auteur ; Andrea Mondoni, Auteur ; Jonas V. Müller, Auteur ; Graziano Rossi, Auteur ; Simone Orsenigo, Auteur Année de publication : 2020 Article en page(s) : pp. 303-313 Langues : Anglais (eng) Catégories : [Thèmes] Banque de graines [Thèmes] Conservation [Thèmes] Jardin botanique Mots-clés : herbier  introduction d'espèces  réintroduction d'espèce  collection de plantes  conservation ex situ  rétablissement de la diversité génétique des plantes  conservation in situ Résumé : "The alarming current and predicted species extinction rates have galvanized conservationists in their efforts to avoid future biodiversity losses, but for species extinct in the wild, few options exist. We posed the questions, can t hese species be restored, and, if so, what role can ex situ plant collections (i.e., botanic gardens, germplasm banks, herbaria) play in the recovery of plant genetic diversity? We reviewed the relevant literature to assess the feasibility of recovering lost plant genetic diversity with using ex situ material and the probability of survival of subsequent translocations. Thirteen attempts to recover species extinct in the wild were found, most of which used material preserved in botanic gardens and seed banks One case of a locally extirpated population was recovered from herbarium material. Eight (60%) of these cases were successful or partially successful translocations of the focal species or population; the other 5 failed or it was too early to determine the outcome. Limiting factors of the use of ex situ source material for the restoration of plant genetic diversity in the wild include the scarcity of source material, low viability and reduced longevity of the material, low genetic variation, lack of evolution (especially for material stored in germplasm banks and herbaria), and socioeconomic factors. However, modern collecting practices present opportunities for plant conservation, such as improved collecting protocols and improved cultivation and storage conditions. Our findings suggest that all types of ex situ collections may contribute effectively to plant species conservation if their use is informed by a thorough understanding of the aforementioned problems. We conclude that the recovery of plant species currently classified as extinct in the wild is not 100% successful, and the possibility of successful reintroduction should not be used to justify insufficient in situ conservation." (source : auteurs) Type de publication : périodique Référence biblio : Abeli T., Dalrymple S., Godefroid S., Mondoni A., Müller J., Rossi G., Orsenigo S., 2020 - Ex situ collections and their potential for the restoration of extinct plants. Conservation Biology, 34 (2) : 303-313. ID PMB : 69005 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=69005 [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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