Abstract
ABSTRACT The possible function of the α-inc allele (an α mating-type allele that is insensitive to the function of the homothallic gene system) was investigated by means of protoplast fusion. The fusion of protoplasts prepared from haploid strains of α-inc HO HMα HMa and α ho hmα HMa gave rise mainly to nonmating clones (58 of 64 isolates) and a few clones (six of 64 isolates) showing a mating type. Thirty of the 56 nonmating clones showed the diploid cell size and 28 clones had a larger cell size. Tetrad analysis of the nonmating clones with diploid cell size indicated that they were a/α-inc diploid; the normal α allele in α/α-inc cells was preferentially switched to an a allele. This observation further indicated that the HO/ho HMα/hmα HMa/HMa genotype is effective for the conversion of the α to a and that the inconvertibility of the a-inc allele is due to the insensitivity of the mating-type allele to the functional combination of the homothallic genes. It was suspected that fusion products larger than diploid cells might have been caused by multiple fusion of protoplasts.
Dates
Type | When |
---|---|
Created | 4 years, 4 months ago (April 22, 2021, 6:22 a.m.) |
Deposited | 4 years, 4 months ago (April 22, 2021, 6:22 a.m.) |
Indexed | 2 years, 4 months ago (April 1, 2023, 2:28 a.m.) |
Issued | 46 years, 6 months ago (Feb. 1, 1979) |
Published | 46 years, 6 months ago (Feb. 1, 1979) |
Published Online | 46 years, 6 months ago (Feb. 1, 1979) |
Published Print | 46 years, 6 months ago (Feb. 1, 1979) |
@article{Takano_1979, title={EVIDENCE OF THE INSENSITIVITY OF THE α-inc ALLELE TO THE FUNCTION OF THE HOMOTHALLIC GENES IN SACCHAROMYCES YEASTS}, volume={91}, ISSN={1943-2631}, url={http://dx.doi.org/10.1093/genetics/91.2.245}, DOI={10.1093/genetics/91.2.245}, number={2}, journal={Genetics}, publisher={Oxford University Press (OUP)}, author={Takano, Isamu and Arima, Kenji}, year={1979}, month=feb, pages={245–254} }