TABLE 2.
Frequency of occurrence of fungi with different colony morphologies recovered from pPVC throughout the in situ trial
| Colony morphotype | Mean CFU cm−2 at wka
|
|||||
|---|---|---|---|---|---|---|
| 10 | 25 | 40 | 55 | 80 | 95 | |
| Aureobasidium pullulans | 0 | 1 ± 1 (2) | 93 ± 50 (3) | 120 ± 35 (3)b | 150 ± 20 (3) | 390 ± 53 (3) |
| Epicoccum nigrum | 0 | 0 | 0 | 0 | 0.3 ± 0.7 (1) | 32 ± 13 (3) |
| Phaeococcomyces sp. | 0 | 0 | 0 | 0 | 10 ± 9 (2) | 64 ± 49 (3) |
| Pink-red yeast, unidentified | 0 | 0 | 0 | 0 | 17 ± 11 (3) | 170 ± 110 (3) |
| Rhodotorula aurantiaca | 0 | 0 | 0 | 0 | 0.7 ± 0.7 (3) | 73 ± 69 (3) |
| Taphrina deformans | 0 | 0 | 0 | 0 | 86 ± 55 (3) | 490 ± 240 (3) |
| Kluyveromyces sp. | 0 | 0 | 0 | 0 | 0 | 220 ± 153 (3) |
| Alternaria alternata | 3 ± 1 (3) | 0.3 ± 0.6 (1) | 4 ± 3 (3) | 0 | 0 | 4 ± 7 (1) |
| Alternaria infectoria | 0 | 0 | 0.2 ± 0.4 (1) | 0 | 0.1 ± 0.3 (1) | 0 |
| Aspergillus niger | 0.3 ± 0.5 (1) | 0 | 0 | 0 | 0 | 7 ± 11 (2) |
| Aspergillus ochraceus | 0 | 0 | 3 ± 5 (1) | 0 | 0 | 0 |
| Cladosporium herbarum | 0 | 0 | 0 | 0 | 0 | 0.6 ± 0.7 (2) |
| Emericella nidulans | 2 ± 2 (2) | 0.3 ± 1.2 (1)b | 0 | 0 | 0.1 ± 0.3 (1) | 0 |
| Kluyveromyces marxianus | 0 | 0 | 0 | 0 | 0.6 ± 1.1 (1) | 0 |
| Paecilomyces lilacinus | 0 | 0 | 0 | 0 | 0 | 6 ± 7 (2) |
| Penicillium glabrum | 0.5 ± 1.2 (1) | 0 | 12 ± 22 (1) | 0 | 0 | 0 |
| Thanatephorous cucumeris | 0 | 0 | 0 | 0 | 0.3 ± 0.5 (2) | 3 ± 5 (1) |
a
The mean viable counts and standard errors from three replicate pPVC pieces, one taken from each in situ rack, are shown. The number of racks on which fungi occurred at each sample time is indicated in parentheses.
b
No statistically significant change in mean CFU count in comparison with previous sample time (P > 0.05).