ISSN:
1617-4623
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary The hybrid produced between a Carbondale haploid strain (α-methyl-glucoside rapid fermenter) and a haploid strain (non-fermenter), derived from a hybrid between a homothallic and a heterothallicSaccharomyces, showed an irregular segregation pattern with regard to the fermentation of this sugar. To explain this irregularity, three pairs of alleles,MG 1/mg 1,MG 2/mg 2 andMG 3/mg 3, were assumed to be in quantitative control of the fermetation. Haploid cultures carrying the genotypes (1)mg 1 mg 2 mg 3, (2)MG 1 mg 2 mg 3, (3)mg 1 MG 2 mg 3, (4)mg 1 mg 2 MG 3, (5)MG 1 MG 2 mg 3, (6)MG 1 mg 2 MG 3, (7)mg 1 MG 2 MG 3, and (8)MG 1 MG 2 MG 3, were actually recovered. Strains equipped with: either (1) or (2); either (4) or (6); (3); (5); (7); or (8) are non-fermenters, extremely-slow-fermenters, slow-fermenters, medium-fermenters, semi-rapid-fermenters and rapid-fermenters respectively. The role of these genes in sugar fermentation and the identity or nonidentity of some of these genes with maltose and sucrose genes was discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00888574
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