Table IV.

Guaiacol-dependent peroxidase activity in presence of different substrates

Guaiacol-dependent peroxidase activity of the partially purified enzymes was measured at pH 5.0. Substrates were added to the assay at concentrations as indicated. Data are given as mean ± sd (n).

Substance	Concentration	pmPOX1	pmPOX2	wPOX1	wPOX2
	μM		% of control
Control		100.0 ± 1.5 (3)	100.0 ± 4.9 (3)	100.0 ± 2.3 (3)	100.0 ± 0.3 (3)
Coumaric acid	100	86.7 ± 2.4 (2)	111.0 ± 0.1 (2)	86.9 ± 2.8 (2)	101.9 ± 2.1 (2)
Ferulic acid	100	221.5 ± 8.2 (3)	402.0 ± 7.1 (2)	372.7 ± 3.9 (2)	264.1 ± 5.8 (2)
Propyl gallate	500	2.4 ± 0.8 (3)	5.0 ± 0.1 (3)	7.2 ± 0.2 (2)	5.7 ± 0.1 (2)
Indole-3-acetic acid (IAA)	10	98.5 ± 0.5 (3)	83.2 ± 0.2 (3)	102.7 ± 4.8 (3)	99.1 ± 6.0 (3)