Table 1.
Diversity of yeast species isolated from different sources during four consecutive vintages (2014–2017).
| Species | Source | Number of isolates | |||
|---|---|---|---|---|---|
| 2014 | 2015 | 2016 | 2017 | ||
| Metschnikowia pulcherrima | Grape | 3 | 3 | 3 | 5 |
| Must | 1 | 1 | 1 | 3 | |
| Fermentation (start, mid, end) | (2, 1, 0) | (1, 0, 0) | (1, 0, 0) | (4, 3, 0) | |
| Lachancea thermotolerans | Grape | 2 | – | – | – |
| Must | 1 | – | – | – | |
| Fermentation (start, mid, end) | (1, 0, 0) | – | – | – | |
| Hanseniaspora uvarum | Grape | - | – | – | – |
| Must | 1 | – | – | 1 | |
| Fermentation (start, mid, end) | (2, 0, 0) | – | – | (4, 1, 0) | |
| Torulaspora delbrueckii | Grape | – | – | – | - |
| Must | – | – | – | - | |
| Fermentation (start, mid, end) | – | – | – | (0, 2, 0) | |
| Saccharomyces cerevisiae | Grape | – | – | – | – |
| Must | – | 1 | – | – | |
| Fermentation (start, mid, end) | (0, 5, 24) | (4, 5, 7) | (4, 5, 35) | (4, 6, 11) | |
Isolates identified by ITS PCR to species level, and by delta PCR for Saccharomyces cerevisiae strain differentiation.