Table 2. Functional traits and metal tolerance (Cd2+, Zn2+ and Pb2+) expressed in percentages of endophytic fungi isolated.
Strains obtained from Polygonum acuminatum and Aeschynomene fluminensis from contaminated (+PHg and +AHg) and uncontaminated areas (-PHg and -AHg).
| Functional traits (%) | +PHg | +AHg | -PHg | -AHg | |
|---|---|---|---|---|---|
| Enzymes | Protease | 26.9 | 38.7 | 22.2 | 27.8 |
| Amylase | 73.1 | 96.8 | 83.3 | 66.7 | |
| Cellulase | 38.5 | 29.0 | 33.3 | 33.3 | |
| Ligninase | 73.0 | 48.4 | 38.9 | 61.1 | |
| Lipase | 23.1 | 29.0 | 27.8 | 33.3 | |
| Antibiosis | S. saprophyticus | 7.7 | 16.1 | 16.7 | 5.6 |
| E. coli | 15.4 | 3.2 | 11.1 | 0.0 | |
| Pb+2 | TI > 1 | 19.2 | 3.2 | 16.7 | 5.6 |
| TI = 1 | 11.5 | 6.4 | 16.7 | 11.1 | |
| TI < 1 | 69.2 | 83.9 | 61.1 | 83.3 | |
| TI = 0 | 0.0 | 6.4 | 5.6 | 0.0 | |
| Zn+2 | TI > 1 | 0.0 | 3.2 | 0.0 | 0.0 |
| TI = 1 | 0.0 | 3.2 | 0.0 | 5.6 | |
| TI < 1 | 73.1 | 48.4 | 72.2 | 72.2 | |
| TI = 0 | 26.9 | 45.2 | 27.0 | 22.2 | |
| Cd+2 | TI > 1 | 0.0 | 0.0 | 0.0 | 5.6 |
| TI = 1 | 0.0 | 3.2 | 0.0 | 0.0 | |
| TI < 1 | 38.5 | 38.7 | 50.0 | 33.3 | |
| TI = 0 | 61.5 | 58.1 | 50.0 | 61.1 | |
| Siderophore | 35.5 | 46.1 | 22.2 | 33.3 | |
| Indoleacetic acid (IAA) | 71.0 | 50.0 | 72.2 | 55.6 | |
| Total of isolates | 31 | 26 | 18 | 18 | |
TI = Tolerance index