Purification, characterization and possible role of enzymes linked to the antioxidant system from rubber tree latex

Clément Anne, Joët Thierry, Dubois Vincent, Chantuma Pisamai. 2001. Purification, characterization and possible role of enzymes linked to the antioxidant system from rubber tree latex. In : Biotechnology and rubber tree : Proceedings of IRRDB symposium, 25-28 September 2001, Montpellier, France. Sainte-Beuve Jérôme (ed.). IRRDB, CIRAD-CP-HEVEA. Montpellier : CIRAD IRRDB Symposium, Montpellier, France, 25 Septembre 2001/28 Septembre 2001.

Résumé : The yield of rubber production, in Hevea brasiliensis is closely related to the resistance of the laticifer system to oxidative stress. This study concerns enzymes of the glutathione-ascobate cycle involved in the detoxication of active oxygen species and the resitance to oxidative stress. Ascorbate peroxidase, glutathione peroxidase and dehydroascorbate reductase activities were evidenced in latex. The purification and kinetic characteristics of the enzymes are described and compared with the latex physiological parameters. Our results suggest that APX plays a major role in H2O2 removal in the latex cells.

Mots-clés Agrovoc : Hevea brasiliensis, latex, oxydation, stress, activité enzymatique, glutathion péroxydase, glutathion réductase, oxydoréductase, purification, antioxydant

Mots-clés complémentaires : Cinétique

Classification Agris : F60 - Physiologie et biochimie végétale
Q60 - Traitement des produits agricoles non alimentaires

Auteurs et affiliations

• Clément Anne, CIRAD-AMIS-AGRONOMIE (FRA)
• Joët Thierry
• Dubois Vincent
• Chantuma Pisamai, RRIT (THA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/513738/)

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