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The influence of certain taxonomic and environmental parameters on biomass production and triterpenoid content in the leaves of Centella asiatica (L.) Urb. from Madagascar

Rahajanirina Voninavoko, Rakotondralambo Raoseta Soaharin'my Ony, Roger Edmond, Razafindrazaka Harena, Pirotais Sarah, Bouchet Marie, Danthu Pascal. 2012. The influence of certain taxonomic and environmental parameters on biomass production and triterpenoid content in the leaves of Centella asiatica (L.) Urb. from Madagascar. Chemistry and Biodiversity, 9 (2) : pp. 298-308.

Journal article ; Article de revue à facteur d'impact
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Quartile : Q2, Sujet : CHEMISTRY, MULTIDISCIPLINARY / Quartile : Q4, Sujet : BIOCHEMISTRY & MOLECULAR BIOLOGY

Abstract : Centella asiatica (Apiaceae family; Talapetraka in Malagasy) is a tropical and subtropical plant with leaves containing glycotriterpenoids (asiaticosides) used in traditional and modern medicine. C. asiatica is collected exclusively in natural stands. It is Madagascar's second most important indigenous plant export. The objective in this study is to provide data which will make it possible to optimize the harvest and thus effectively develop this resource. Two foliar morphotypes were identified: morphotype A with small reniform leaves (leaf area ca. 4.5 cm2), found in the east of Madagascar, and morphotype B with large round leaves (up to 7.5 cm2) found in the west, with sympatric zones in the central part of the island. Morphotype A produces a higher biomass, and is twice as rich in asiaticosides as morphotype B. Significant variations in biomass yield and asiaticoside content are observed depending on the date of collection: higher during the rainy season (December to April) and lower during the dry season (June to August). Inter-annual variations are also observed. Populations located at around 800-1400 m altitude on the eastern side of Madagascar, in a sub-humid climate, appeared to be more productive. These results provide more precise information to the economic sector, which confirms the empirical choices made by collectors. They represent the first elements towards sustainable management of the resource, and maybe even domestication. (Résumé d'auteur)

Mots-clés Agrovoc : Apiaceae, Plante médicinale, Récolte, Feuille, Facteur du milieu, Variation saisonnière, Triterpénoïde, Composition chimique, Croissance, Morphologie végétale, Rendement des cultures, Biomasse, Climat subhumide

Mots-clés géographiques Agrovoc : Madagascar

Mots-clés complémentaires : Centella asiatica

Classification Agris : F01 - Crops
F60 - Plant physiology and biochemistry
F62 - Plant physiology - Growth and development

Champ stratégique Cirad : Hors axes (2005-2013)

Auteurs et affiliations

  • Rahajanirina Voninavoko, Université d'Antananarivo (MDG)
  • Rakotondralambo Raoseta Soaharin'my Ony, Université d'Antananarivo (MDG)
  • Roger Edmond, Université d'Antananarivo (MDG)
  • Razafindrazaka Harena, Université d'Antananarivo (MDG)
  • Pirotais Sarah, L'homme et l'environnement (MDG)
  • Bouchet Marie, L'homme et l'environnement (MDG)
  • Danthu Pascal, CIRAD-ES-UPR BSef (MDG)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/563465/)

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