Table 1.

Carotenoid Profile Determined by HPLC from Roots of 6-Month-Old Field-Grown Transgenic Plants Expressing the Bacterial PSY CrtB (CP1:TP-CrtB)

Event	Total Car.	Phytoene	Phytofluene	β-Carotene	Xanthophylls
Wild type	0.65 ± 0.06	0.00 ± 0.00 (nd)	0.00 ± 0.00 (nd)	0.41 ± 0.01 (63)	0.24 ± 0.05 (37)
84	1.18 ± 0.32	0.21 ± 0.10 (16)	0.30 ± 0.00 (25)	0.38 ± 0.03 (32)	0.30 ± 0.09 (25)
11	1.19 ± 0.03	0.09 ± 0.04 (8)	0.10 ± 0.01 (8)	0.41 ± 0.01 (35)	0.59 ± 0.11 (49)
220	1.20 ± 0.21	0.15 ± 0.06 (12)	0.18 ± 0.00 (15)	0.38 ± 0.07 (32)	0.50 ± 0.10 (41)
122	1.27 ± 0.40	0.24 ± 0.07 (19)	0.13 ± 0.02 (10)	0.29 ± 0.09 (23)	0.62 ± 0.15 (48)
139	1.58 ± 0.60	0.16 ± 0.05 (10)	0.22 ± 0.02 (14)	0.45 ± 0.10 (28)	0.74 ± 0.14 (47)
509	1.95 ± 0.08	0.26 ± 0.04 (13)	0.36 ± 0.01 (19)	1.09 ± 0.01 (56)	0.23 ± 0.09 (12)
12	21.84 ± 0.84	8.91 ± 0.37 (39)	4.30 ± 0.05 (20)	6.67 ± 0.93 (32)	1.96 ± 0.25 (9)

All transgenic events had increased carotenoid (Car.) levels over the wild type. nd, not detectable. Carotenoid levels are given in μg g⁻¹ dry weight; the relative distribution of individual carotenoids in percentage is given in parentheses. Data represent the mean ± se of three technical replicates.