Filling the gaps in gene banks: Collecting, characterizing, and phenotyping wild banana relatives of Papua New Guinea
2021
Eyland, David | Breton, Catherine | Sardos, Julie | Kallow, Simon | Panis, Bart | Swennen, Rony | Paofa, Janet | Tardieu, Francois | Welcker, Claude | Janssens, Steven, B | Carpentier, Sebastien | Catholic University of Leuven = Katholieke Universiteit Leuven (KU Leuven) | Bioversity International [Montpellier] ; Bioversity International [Rome] ; Consultative Group on International Agricultural Research [CGIAR] (CGIAR)-Consultative Group on International Agricultural Research [CGIAR] (CGIAR) | Royal Botanic Gardens [Kew] | Bioversity International [Belgique] ; Bioversity International [Rome] ; Consultative Group on International Agricultural Research [CGIAR] (CGIAR)-Consultative Group on International Agricultural Research [CGIAR] (CGIAR) | International Institute of Tropical Agriculture (IITA-Tanzania) ; International Institute of Tropical Agriculture [Nigeria] (IITA) ; Consultative Group on International Agricultural Research [CGIAR] (CGIAR)-Consultative Group on International Agricultural Research [CGIAR] (CGIAR) | PNG National Agricultural Research Institute (NARI) | Écophysiologie des Plantes sous Stress environnementaux (LEPSE) ; Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro ; Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro) | Meise Botanic Garden [Belgium] (Plantentuin) | "Adapting Agriculture to Climate Change: Collecting, Pro-tecting and Preparing Crop Wild Relatives,” which is supported by the Government of Norway. | Global Crop Diversity Trust in part-nership with national and international gene banks and plant breeding institutes around the world (http://www.cwrdiversity.org/). | The Deutsche Gesellschaft für Interna-tionale Zusammenarbiet GIZ | scholarship funded by the Global TRUST foundation project “Crop wild Relatives Evaluation of drought tolerance in wild bananas from Papua New Guinea” | CGIAR Fund (https://www.cgiar.org/funders/), | CGIAR Research Program Roots, Tubers and Bananas (RTB-CRP) | Belgian Development Cooperation project ‘‘More fruit for food security: Developing climate-smart bananas for the African Great Lakes region.” | CIRAD–UMR AGAP HPC Data Center of the South Green Bioinfor- matics platform (http://www.southgreen.fr/) | ANR-11-INBS-0013,IFB (ex Renabi-IFB),Institut français de bioinformatique(2011) | European Project: 731013 ,EPPN2020(2017)
International audience
Mostrar más [+] Menos [-]Inglés. Since natural habitats are disappearing fast, there is an urgent need to collect, characterize, and phenotype banana (Musa spp.) crop wild relatives to identify unique genotypes with specific traits that fill the gaps in our gene banks. We report on a collection mission in Papua New Guinea carried out in 2019. Seed containing bunches were collected from Musa peekelii ssp. angustigemma (N.W.Simmonds) Argent (3), M. schizocarpa N. W. Simmonds (4), M. balbisiana Colla (3), M. acuminata ssp. banksii (F. Muell.) Simmonds (14), M. boman Argent (3), M. ingens Simmonds (2), M. maclayi ssp. maclayi F.Muell. ex Mikl.-Maclay (1), and M. lolodensis Cheesman (1). This material, together with the seeds collected during a previous mission in 2017, form the basis for the development of a wild banana seed bank. For characterization and phenotyping, we focused on the most ubiquitous indigenous species of Papua New Guinea: M. acuminata ssp. banksii, the ancestor of most edible bananas. We calculated that the median genomic dissimilarity of the M. acuminata ssp. banksii accessions was 4% and that they differed at least 5% from accessions present in the International Transit Centre, the world's largest banana gene bank. High-throughput phenotyping revealed drought avoidance strategies with significant differences in root/shoot ratio, soil water content sensitivity, and response towards vapor pressure deficit (VPD). We deliver a proof of principle that the wild diversity is not yet fully covered in the gene banks and that wild M. acuminata ssp. banksii populations contain individuals with unique traits, useful for drought tolerance breeding programs.
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