Table 2.
Metabolites or enzymes in the phenylpropanoid pathway responsive to F. graminearum infection.
| Phenylpropanoid Pathway | Function | F. graminearum Infection | Abundance |
|---|---|---|---|
| Phenylalanine ammonia lyase | catalyzes the transformation of L-Phe | upregulated in R 1 | / |
| downregulation in S 2 | |||
| Phenylalanine | precursor of phenylpropanoid pathway | induced | R > S 3 |
| Lignin | strengthens cell wall | induced | R > S |
| Flavonoid | inhibits the activity of cell wall degrading enzymes | induced | R > S |
| Hydroxycinnamic acid amides | strengthens cell wall | induced | R > S |
1 resistant cultivars; 2 susceptible cultivars; 3 the abundance of metabolites or enzymes in phenylpropanoid pathway in resistant cultivars was higher than susceptible cultivars.