| AGP | arabinogalactan protein |
| CAT | catalase |
| DW | dry weight |
| EXT | extensin |
| FW | fresh weight |
| TMs | trace metals |
| M | metallicolous ecotype |
| NM | non-metallicolous ecotype |
| POX | peroxidase |
| ROS | reactive oxygen species |
| SOD | superoxide dismutase |
| TBARs | thiobarbituric acid-reactive-substances |
| TEM | transmission electron microscope |
| TF | translocation factor |