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090			_aB-14151
245	1	0	_aBalance between anionic and cationic extracellular peroxidase activities in Sedum album leaves after ozone exposure. Analysis by high-performance liquid chromatography
490	0		_vPhysiologia Plantarum, 68, p.201-208, 1986
520	3		_aPeroxidase activity was assayed with different electron donors (guaiacol, ascorbate, syringaldazine)in the intercellular fluid of Sedum album L. leaves after ozone exposure. Anionic and cationic peroxidases were separated and purified by high performance ion-exchange and gel permeation chromatography. Both isoperoxidases were tested as regards their molecular weight and apparent kinetic constants with different substrates. Ascorbate peroxidase activity was rapidly stimulated after ozone exposure, whereas syringaldazine peroxidase activity reached its maximum 24 h later. Increases in ascorbate and syringaldaiine peroxidase activities occurred simultaneously with increases in cationic and anionic peroxidase activities, respectively. Apparent K^ values indicate a high affinity of cationic peroxidases for ascorbate and of anionic peroxidases for syringaldazine. The metabolic role of this balance between cationic and anionic peroxidases after ozone exposure is discussed.
650	1	4	_aASCORBATE
650	1	4	_aSYRINGALDAZINE
700	1	2	_aCastillo, F.J.
700	1	2	_aGrepptn, H.
856	4	0	_uhttps://drive.google.com/file/d/1xDFiep7-xWM_AwQ1Pg06lGTZhV69Z3zX/view?usp=drivesdk _zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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