| Strain | Genotype | Source of strain |
| tr2-1-GS115 | PAOX1-PHO5 HIS4 phox | [7] |
| Δrtg2-GS115 | PAOX1-PHO5 HIS4 phox Pprtg2::ZEOR | This study. |
| Δmsn2/4-GS115 | PAOX1-PHO5 HIS4 phox Ppmsn2/4::ZEOR | This study. |
| Δrtg1-GS115 | PAOX1-PHO5 HIS4 phox Pprtg1::ZEOR | This study. |