| PMEI | Pectin methylesterase inhibitor |
| PME | Pectin methyl esterase |
| DM | Degree of methylation |
| HG | Homogalacturonan |
| GalA | D-galacturonic acid |
| GAUT | Galacturonosyltransferases |
| OGs | Oligogalacturonides |
| DAMP | Damage associated molecular pattern |
| H2O2 | Hydrogen peroxide |
| SCE | Seed coat epidermis |
| MUM1 | Mucilage-modified mutant 1 |