Table 2.
Mannitol cycle activities and relative intermediate concentrations in different tissues of A. niger N402
| Tissue | MTD activity (mU/mg) | MPD activity (mU/mg) | Mannitol relative abundancea | Mannitol-1- phosphate relative abundancea |
|---|---|---|---|---|
| Nonsporulating mycelium | 0.0 ± 0.0 | 68.3 ± 0.0 | 4.8 ± 1.9 | 4.4 ± 2.3 |
| Sporulating mycelium | 12.5 ± 5.5 | 453.9 ± 9.5 | 6.3 ± 2.0 | 11.7 ± 5.0 |
| Conidiospores (young) | 19.8 ± 0.0 | 2.8 ± 2.8 | ND | ND |
| Conidiospores (mature) | 236.0 ± 12.2 | 18.6 ± 4.6 | 16.8 ± 5.7 | 42.4 ± 9.9 |
a
Relative abundances were calculated by dividing the area of the peak representing either mannitol or mannitol-1-phosphate by that of the internal technical standard (ribitol). ND, not determined.