The sugar and polyol composition of Hevea brasiliensis latex depends on the clonal origin of the tree

Bellacicco Sophie, Prades Alexia, Char Christine, Vaysse Laurent, Granet Françoise, Lacote Régis, Gohet Eric, Flori Albert, Sainte Beuve Jérôme, Bonfils Frédéric. 2018. The sugar and polyol composition of Hevea brasiliensis latex depends on the clonal origin of the tree. Journal of Rubber Research, 21 (3) : 224-235.

Quartile : Q4, Sujet : POLYMER SCIENCE

Résumé : components (lipids, proteins, carbohydrates and minerals) present in NR. Of all the factors that might be held responsible for this variability, clonal origin has appeared to be prominent. The sugars and polyols of latex from five Hevea brasiliensis clones (RRIM600, GT1, PB235, PB260 and PB217) were extracted with ethanol after specific NR sample pretreatment in a cyclohexane/ethanol solution. Latex carbohydrates were characterised by high performance anion-exchange chromatography equipped with a pulsed amperometric detector (HPAE-PAD). Total extractable carbohydrates, single sugars and polyols were analysed for each clone to evaluate how clonal origin affected the variability of latex carbohydrate compositions. Significant clonal differences were identified, both in the total sugar and polyol contents of the latex, and in the quantity of each element. The differences between the latex extracts of clones GT1, PB217, PB260, PB235 and RRIM600 did not come solely from the presence of major carbohydrates, such as quebrachitol or sucrose, but also effectively from minor carbohydrates, such as sorbitol or galactose. Some minor carbohydrates could even be used as biochemical clone indicators.

Mots-clés Agrovoc : Hevea brasiliensis, clone, variation génétique, latex, composition chimique, produit forestier non ligneux

Classification Agris : F60 - Physiologie et biochimie végétale
K50 - Technologie des produits forestiers
F30 - Génétique et amélioration des plantes

Champ stratégique Cirad : Axe 2 (2014-2018) - Valorisation de la biomasse

Auteurs et affiliations

• Bellacicco Sophie, Michelin (FRA)
• Prades Alexia, CIRAD-PERSYST-UMR Qualisud (FRA) ORCID: 0000-0001-8508-0561
• Char Christine, CIRAD-PERSYST-UMR IATE (FRA)
• Vaysse Laurent, CIRAD-PERSYST-UMR IATE (THA)
• Granet Françoise, Michelin (FRA)
• Lacote Régis, CIRAD-PERSYST-UPR Systèmes de pérennes (FRA)
• Gohet Eric, CIRAD-PERSYST-UPR Systèmes de pérennes (FRA) ORCID: 0000-0002-0379-0592
• Flori Albert, CIRAD-PERSYST-UPR Systèmes de pérennes (FRA)
• Sainte Beuve Jérôme, CIRAD-PERSYST-UMR IATE (FRA)
• Bonfils Frédéric, CIRAD-PERSYST-UMR IATE (FRA) ORCID: 0000-0001-7016-4770

Source : Cirad-Agritrop (https://agritrop.cirad.fr/588760/)

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