Fig. 1.

Enzyme activities in whole-leaf extract of WT, trxo1 mutant, and ntra ntrb double mutant. Activities (nmol⋅min⁻¹⋅g⁻¹ of FW) were determined in leaf material harvested at the end of the day from 4-wk-old plants before bolting. Data presented are mean ± SEM (n = 6). Asterisks indicate values significantly different from WT by the Student’s t test (*P < 0.05).