TABLE 1.
Spatial distribution of organic acid bound K changes with distance from carbon-rich PDA a
| Spectra | Unidentified organic K | K-citrate | K-tartrate | R-factor |
|---|---|---|---|---|
| A1 | 72.6 | - | 27.4 | 0.0057 |
| A2 | 71.5 | - | 28.5 | 0.0007 |
| A3 | 77.3 | - | 22.7 | 0.00068 |
| A4 | 75.5 | - | 24.5 | 0.004 |
| B1 | 30 | - | 70 | 0.049 |
| B2 | 71.3 | - | 28.7 | 0.0009 |
| B3 | 31.7 | - | 68.3 | 0.004 |
| B4 | 75.5 | - | 24.5 | 0.014 |
a
Linear combination fitting of the XANES spectra from Fig. 4 (A1-4 and B1-4) shows amount (%) of organic K, K-citrate, and K-tartrate within fungal hyphae extracted from the micromodel surface.