TY - SER AU - Domingues,S.J.S. AU - Souza,T.F.de AU - Soares,A.M.S. AU - Jacinto,T. AU - Machado,O.L.T. TI - Activation of phospholipase PLA activity in Ricinus communis leaves in response to mechanical wounding KW - MAMONA KW - BIOLOGIA VEGETAL ER -