Table 1.

Inhibition of DAO activity by AG. DAO activity was measured in the control plants (control, −AG) or in plants treated for 3 days with aminoguanidyne added to the nutrient solution before the collection (control, +AG) as well as in plants, which after 3 days of treatment with Cd were transferred to the control conditions without (Cd, −AG) or with aminoguanidyne (Cd, +AG) for another 3 days.

	DAO Activity (pmol Δ-Pyrroline/min/g FW)
	−AG	+AG
Control	16.3 (±1.1)	2.7 (±0.7)
Cd	32.1 (±1.9)	3.3 (±1.2)