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Glutathion peroxidase activity in Hevea brasiliensis latex

Joët T., Gallois R., Prévôt J.C., Clément A., Jacob J.L.. 1997. In : Pech Jean-Claude (ed.), Latché Alain (ed.), Bouzayen M. (ed.). Plant sciences 1997 : Book of contributions presented at the 3e Colloque général de la Sociéte Française de Physiologie Végétale, Toulouse, France, December 1-3, 1997. Paris : SFPV, p. 213-214. Colloque général de la Société française de physiologie végétale. 3, 1997-12-01/1997-12-03, Toulouse (France).

Latex from hevea brasiliensis, collected by periodical incisions in the bark, is a cytoplasm. The incision induces latex flow, in situ latex regeneration and in the same time stress reactions, which are likely to generate Active Oxygen Species (AOS) like O2 and H2O2 AOS can induce laticiferous system senescence (bark druness). H2O2, AOS more stable form, is detoxified in the hevea latex catalase, ascorbate peroxidase (Apx), but also glutathion peroxidase (GPx)

Mots-clés : hevea brasiliensis; latex; glutathion péroxydase

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