Comparison of the structure of inductive and constitutive isoflavonoids of Fabaceae reveal a stronger trend towards the biosynthesis of compounds endowed with more potent antioxidant properties to characterize the former metabolic category. The function of inductive isoflavonoids should thus defense of plant tissue against injury-stimulated oxidative burst.
Key words:
Isoflavonoids; phytoalexins; Fabaceae
| T | I | c | I/C | |
|---|---|---|---|---|
| Isoflavones | 138 | 33 | 126 | 0.26 |
| Coumcstans | 29 | 10 | 23 | 0.43 |
| Isoflavanones | 45 | 18 | 32 | 0.56 |
| Isollavans | 47 | 20 | 34 | 0.59 |
| Pterocarpans | 74 | 49 | 37 | 1.32 |
| PI | NI | PI/NI | PC | NC | PC/NC | PI/PC | |
|---|---|---|---|---|---|---|---|
| Isoflavoncs | 7 | 26 | 0.27 | 52 | 74 | 0.70 | 0.13 |
| Coumestans | 4 | 6 | 0.67 | 6 | 17 | 0.35 | 0.67 |
| Isotlavanones | 9 | 9 | 1.00 | l l | 21 | 0.52 | 0.82 |
| Isoflavans | 8 | 12 | 0.67 | 8 | 26 | 0.31 | 1.00 |
| Pterocarpans | 24 | 25 | 0.96 | 7 | 30 | 0.23 | 3.43 |
| 2 | 3 | 4 | 5 | 6 | 7 | NG0 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| I | C | I | C | I | C | I | C | I | c | I | c | I | C | I/C | |
| Isoflavones | 8 | 10 | 16 | 46 | 9 | 56 | - | 12 | - | 2 | - | - | 3.03 | 3.60 | 0.84 |
| Coumeslans | 6 | 8 | 4 | 10 | - | 4 | - | 1 | - | - | - | - | 2.40 | 2.91 | 0.82 |
| Isoflavanones | 0 | 3 | 5 | 4 | 13 | 21 | - | 4 | - | - | - | - | 3.72 | 3.81 | 0.98 |
| Isoflavans | 0 | 1 | 11 | 7 | 9 | 16 | - | 6 | - | 3 | - | 1 | 3.45 | 4.18 | 0.83 |
| Pterocarpans | 12 | 12 | 29 | 15 | 4 | 9 | 4 | 1 | - | - | - | - | 2.79 | 2.97 | 0.94 |
| 0 | 1 | 2 | 3 | 4 | NOH 1 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| I | C | I | C | I | C | I | C | I | C | I | C | 1/C | |
| Isotlavoncs | 3 | 20 | 8 | 33 | 7 | 34 | 9 | 29 | 5 | 11 | 2.16 | 1.83 | 1.18 |
| Coumcstans | - | 3 | 4 | 11 | 4 | 7 | 2 | 2 | - | - | 1.80 | 1.35 | 1.33 |
| Isotlavanones | - | 4 | 2 | 6 | 4 | 8 | 8 | 9 | 4 | 5 | 2.22 | 2.16 | 1.03 |
| lsoflavans | - | 2 | 9 | 9 | 8 | 11 | 3 | 12 | - | - | 1.70 | 1.97 | 0.86 |
| Pterocarpans | 2 | 12 | 18 | 18 | 25 | 13 | 4 | - | - | - | 1.63 | 1.01 | 1.61 |
