Table 3.
Activity of the antioxidant enzymes in the gut and fat body in the last instar of S. exigua larvae
| CAT [nmol/min/mg protein] | SOD [units/min/mg protein] | GST [nmol/min/mg protein] | ||||
|---|---|---|---|---|---|---|
| Gut | Fat body | Gut | Fat body | Gut | Fat body | |
| Control treatment in the 11th generation | ||||||
| Control | 142 ± 66ab# | 457 ± 202b§ | 2.9 ± 0.3a# | 3.1 ± 0.7a# | 74 ± 19a# | 69 ± 22bc# |
| Cd–C | 196 ± 82b# | 1,038 ± 164d§ | 6.8 ± 2.3b# | 6.4 ± 2.6b# | 42 ± 23b# | 45 ± 16cd# |
| Zn–C | 89 ± 23a# | 706 ± 170c§ | 4.1 ± 2.5ab# | 3.6 ± 1.5a# | 40 ± 9bc# | 29 ± 7cd# |
| Cadmium treatment in the 11th generation | ||||||
| C–Cd | 176 ± 58b# | 417 ± 50b§ | 3.1 ± 1.2a# | 4.4 ± 1.2a# | 59 ± 31ab# | 102 ± 32a§ |
| Cd–Cd | 477 ± 54c# | 954 ± 107cd§ | 3.7 ± 0.5a# | 2.5 ± 0.8a# | 71 ± 8ab# | 51 ± 4bc§ |
| Zn–Cd | 150 ± 56ab# | 1,385 ± 142e§ | 5.9 ± 2.2b# | 3.0 ± 1.7ab§ | 19 ± 6c# | 41 ± 20cd§ |
| Zinc treatment in the 11th generation | ||||||
| C–Zn | 121 ± 52a# | 236 ± 79a# | 4.0 ± 0.7a# | 4.1 ± 1.0ª# | 69 ± 9ab# | 72 ± 13b# |
| Zn–Zn | 113 ± 37a# | 322 ± 153ab§ | 3.8 ± 1.1a# | 3.8 ± 1.7a# | 66 ± 12ab# | 52 ±10bc# |
| Cd–Zn | 102 ± 46a# | 816 ± 193c§ | 3.2 ± 1.0a# | 3.6 ± 1.2a# | 33 ± 14c# | 28 ± 14d# |
N = 5, mean value ± SD. Different letters indicate significant differences among experimental groups in the same organ (in columns); symbols # and § indicate significant differences between organs in the same treatment (in rows) (LSD test, P < 0.05). Descriptions of the strains and experimental groups are given in Fig. 1