Musa species in mainland Southeast Asia: From wild to domesticate
2024
Jenny, Christophe | Sachter-Smith, Gabriel | Breton, Catherine | Rivallan, Ronan | Jacquemoud-Collet, Jean-Pierre | Dubois, Cécile | Chabannes, Matthieu | Lý, Ngọc-Sâm | Haevermans, Thomas | Triệu, Tiến-Dũng | Insisiengmay, Oudomphone | Zhang, Ting | Caruana, Marie-Line | Sardos, Julie | Perrier, Xavier | Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier ; 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)-Université de Montpellier (UM) | Département Systèmes Biologiques (Cirad-BIOS) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad) | Hawai'i Banana Source | The Alliance of Bioversity International and International Center for Tropical Agriculture (CIAT) [France] ; Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT) [Rome] (Alliance) ; Consultative Group on International Agricultural Research [CGIAR] (CGIAR)-Consultative Group on International Agricultural Research [CGIAR] (CGIAR) | Vietnam Academy of Science and Technology (VAST) | Institute of Tropical Biology ; Vietnam Academy of Science and Technology (VAST) | Institut de Systématique, Evolution, Biodiversité (ISYEB) ; Muséum national d'Histoire naturelle (MNHN)-École Pratique des Hautes Études (EPHE) ; Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA) | Northern Mountainous Agriculture and Forestry Science Institute (NOMAFSI) | Ministry of Agriculture and Forestry of Laos | Kunming Institute of Botany [CAS] (KIB) ; Chinese Academy of Sciences [Beijing] (CAS) | Direction Générale Déléguée à la Recherche et à la Stratégie (Cirad-Dgdrs) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad) | This study was funded by the Sud Expert Plantes Developpement Durable programme through the DivBa SEP2D project (AAP3-97) and the BforBB open science project supported by the Agropolis Fondation under the reference ID 1605-011 through the "Investissements d'avenir" programme (Labex Agro: ANR-10-LABX-0001). This work was technically supported by the CIRAD—UMR AGAP HPC Data Centre of the South Green Bioinformatics platform (https://www.southgreen.fr/). Parts of this work were also performed on the MESO@LR-Platform at the University of Montpellier and on the Core Cluster of the Institut Français de Bioinformatique (IFB) (ANR-11-INBS-0013). | South Green Bioinformatics platform, UMR AGAP, Montpellier, France (https://www.southgreen.fr) | MESO@LR-Platform, University of Montpellier, France | Core Cluster of the Institut Français de Bioinformatique (IFB) | ANR-10-LABX-0001,AGRO,Agricultural Sciences for sustainable Development(2010) | ANR-11-INBS-0013,IFB (ex Renabi-IFB),Institut français de bioinformatique(2011)
Data Availability: Raw sequence reads were deposited in the Sequence Read Archive (SRA) of the National Center for Biotechnology Information (NCBI) (BioProject: PRJEB60749 / URL: https://www.ncbi.nlm.nih.gov/PRJEB60749). SNP datasets are available on GIGWA via MGIS (Project: Musa_Species_Jenny_2023 / URL: https://www.crop-diversity.org/mgis/gigwa).
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Afficher plus [+] Moins [-]anglais. Many species are defined in the Musa section within its natural diversification area in Southeast Asia. However, their actual number remains debated as botanical characterisation, distribution and intraspecific variability are still poorly known, compromising their preservation and their exploitation as crop wild relatives of cultivated forms. To address the underexplored Musa diversity in mainland Southeast Asia, at the northern edge of the natural range, 208 specimens were collected in Vietnam, Laos and China, mainly belonging to Musa balbisiana, M. itinerans, M. acuminata and M. yunnanensis. Data on location, morphology, environment and local knowledge were recorded, and leaf samples collected for highthroughput genotyping. This study combines geographical, morphological, and genomic diversity to clarify the taxonomic classification. The collected species exhibit highly distinctive morphologies and genomes, just as they differ in ranges and life traits. Intraspecific genomic diversity was also observed, although not necessarily morphologically perceptible. Mainland Southeast Asia is confirmed as a primary diversification centre for the Musa section. The diversity observed is only partially represented in major international ex situ collections, calling for their urgent enrichment and the promotion of in situ management procedures, for the protection of these threatened species and to better harness their potential in breeding programmes. Although considered wild, the species studied are all affected to varying extents by human use. Musa yunnanensis and M. acuminata subsp. burmannica are the most strictly wild forms, with spontaneous interspecific hybrids first described in this study. Although gathered as fodder, they were only occasionally dispersed outside their endemic zones. Musa itinerans is not cultivated per se, but natural populations are widely exploited, leading to a geographically structured diversity. The diversity of M. balbisiana is widely distributed and geographically structured by human activities. This species should be regarded as domesticated. These various stages, from simple opportunistic gathering to true domestication, shed light on the evolutionary history of today's cultivated varieties.
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