Table 1.
Parental strains used in this study and their genotypes
| Strain | Genotypea | Reference |
|---|---|---|
| CHY618 | MATα ura5 mtD sxi1α::NAT | Hull et al. 2002 |
| CHY620 | MATα ura5 mtD SXI1α NAT | Hull et al. 2002 |
| CHY647 | MATα ura5 mtD sxi1α::NAT URA5 ectopic pPM8 vector | Hull et al. 2002 |
| CHY648 | MATα ura5 mtD sxi1α::NAT URA5 ectopic pPM8-SXI1α | Hull et al. 2002 |
| YZX2 | MATa ade2 mtA NEO | Yan et al. 2004 |
aThe above five strains are isogenic except at the indicated loci. MATa: mating type a; MATα: mating type α. Strains with ura5 or ade2 auxotrophic markers require uracil or adenine respectively for growth on the minimum SD medium. mtA and mtD refer to the two parental mitochondrial genotypes distinguished by polymorphisms at loci ND2, ND4, ND5 and COX1. mtD contains one and four extra introns in ND5 and COX1 respectively compared to mtA in strain YZX2. For details of alleles at these three loci as well as at the COX1 locus, please see the main text, Fig. 1, Table 3, and references Xu (2002) and Yan and Xu (2003)