Table 7.

Comparison of reduced and oxidized glutathione levels in calli

	Concentration (nmol g−1 f. wt)
Metabolites	Control (%)	L-1 (%)	L-2 (%)
GSH	219·7 ± 36·5 (100)	639·3 ± 105·8 (291)	449·0 ± 80·4 (204)
GSSG	75·8 ± 11·8 (100)	99·5 ± 11·3 (131)	101·5 ± 14·2 (134)
GSH + GSSG	295·5 ± 24·8 (100)	738·8 ± 117·0 (250)	550·5 ± 85·3 (186)
GSH/GSSG	2·9 (100)	6·4 (221)	4·4 (153)

Calli cultured for 5 d were used.

Control, transgenic rice possessing vector alone; L-1 and L-2, transgenic rice possessing the YK1 gene.

Data are the means ± s.e. of three independent experiments.