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Revisiting the enzymes stored in the laticifers of Carica papaya in the context of their possible participation in the plant defence mechanism.

par El Moussaoui, Anouar Sadat ;Nijs, Michelle ;Paul, Claudine ;Wintjens, René ;Vincentelli, Jean ;Azarkan, Mohamed ;Looze, Yvan
Référence Cellular and molecular life sciences, 58, 4, page (556-570)
Publication Publié, 2001-04

Article révisé par les pairs

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Résumé :

In the tropical species Carica papaya, the articulated and anastomosing laticifers form a dense network of vessels displayed in all aerial parts of the plant. Damaging the papaya tree inevitably severs its laticifers, eliciting an abrupt release of latex. Besides the well-known cysteine proteinases, papain, chymopapain, caricain and glycyl endopeptidase, papaya latex is also a rich source of other enzymes. Together, these enzymes could provide an important contribution to plant defence mechanisms by sanitising and sealing the wounded areas on the tree.