An integrated hypothesis on the domestication of Bactris gasipaes

Galluzzi Gea, Dufour Dominique, Thomas Evert, Van Zonneveld Maarten, Escobar Salamanca Andrés Felipe, Giraldo Toro Andres, Rivera Andrés, Salazar Duque Hector, Suárez Baron Harold, Gallego Gerardo, Scheldeman Xavier, gonzalez Mejia Alonso. 2015. An integrated hypothesis on the domestication of Bactris gasipaes. PloS One, 10 (12):e0144644, 24 p.

Quartile : Q1, Sujet : MULTIDISCIPLINARY SCIENCES

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Psychologie-éthologie-ergonomie; Staps

Résumé : Peach palm (Bactris gasipaes Kunth) has had a central place in the livelihoods of people in the Americas since pre-Columbian times, notably for its edible fruits and multi-purpose wood. The botanical taxon includes both domesticated and wild varieties. Domesticated var gasipaes is believed to derive from one or more of the three wild types of var. chichagui identified today, although the exact dynamics and location of the domestication are still uncertain. Drawing on a combination of molecular and phenotypic diversity data, modeling of past climate suitability and existing literature, we present an integrated hypothesis about peach palm's domestication. We support a single initial domestication event in south western Amazonia, giving rise to var. chichagui type 3, the putative incipient domesticate. We argue that subsequent dispersal by humans across western Amazonia, and possibly into Central America allowed for secondary domestication events through hybridization with resident wild populations, and differential human selection pressures, resulting in the diversity of present-day landraces. The high phenotypic diversity in the Ecuadorian and northern Peruvian Amazon suggest that human selection of different traits was particularly intense there. While acknowledging the need for further data collection, we believe that our results contribute new insights and tools to understand domestication and dispersal patterns of this important native staple, as well as to plan for its conservation.

Mots-clés Agrovoc : Bactris gasipaes, domestication des plantes, évolution, distribution géographique, habitat, conservation des ressources génétiques, ressource génétique végétale, variation génétique, modélisation environnementale, facteur climatique, plante sauvage, plante de culture, phénotype, morphologie végétale, composition chimique, fruit (botanique), marqueur génétique, biologie moléculaire

Mots-clés géographiques Agrovoc : Costa Rica, Pérou, Colombie, Équateur, Amazonie

Classification Agris : F70 - Taxonomie végétale et phytogéographie
F30 - Génétique et amélioration des plantes
U10 - Informatique, mathématiques et statistiques
U30 - Méthodes de recherche

Champ stratégique Cirad : Axe 1 (2014-2018) - Agriculture écologiquement intensive

Auteurs et affiliations

• Galluzzi Gea, Bioversity International (COL)
• Dufour Dominique, CIRAD-PERSYST-UMR Qualisud (COL) ORCID: 0000-0002-7794-8671
• Thomas Evert, Bioversity International (PER)
• Van Zonneveld Maarten, Bioversity International (COL)
• Escobar Salamanca Andrés Felipe, CIAT (COL)
• Giraldo Toro Andres, CIAT (COL)
• Rivera Andrés, CIAT (COL)
• Salazar Duque Hector, Universidad del Quindío (COL)
• Suárez Baron Harold, Universidad de Antioquia (COL)
• Gallego Gerardo, CIAT (COL)
• Scheldeman Xavier, Bioversity International (COL)
• gonzalez Mejia Alonso, CIAT (COL)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/579081/)

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