Table V. Content of GSH and GSSG and the GSH/GSSG ratio in leaves and callus cultures of R. cordifolia and Arabidopsis.

Measurements were performed in three independent samples. Callus cultures were analyzed at the linear (20–22 d) phase of growth with three biological replicates. Averaged data (mean ± se) are presented. * P < 0.05 versus values of control calli, ANOVA followed by Fisher's Plsd test.

Plant Samples and Callus Cultures	GSH	GSSG	GSH to GSSG
	nmol g−1 FW
R. cordifolia leaves	156 ± 31	44 ± 15	3.6 ± 1.1
R	118 ± 21	53 ± 0.3	2.2 ± 0.3
RB-L	114 ± 10	53 ± 1	2.2 ± 0.3
RB-H	128 ± 12	51 ± 2	2.5 ± 0.3
Arabidopsis (vector control)	78 ± 4.5	15 ± 3	5.2 ± 1.1
Arabidopsis low-rolB-expressing AtB-1	80 ± 12	13 ± 5	6.2 ± 1.6
Arabidopsis high-rolB-expressing AtB-2	97 ± 10*	11 ± 3	8.8 ± 2.1*