Saccharomycodes ludwigiiの単胞子培養株について : (第5報)栄養細胞間交雑による異核接合体の形成 : (その1)異質細胞集団の発生による凝集型の変動

概要

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Heterocaryosis in the zygote-like cell formation between vegetative cells of opposite agglutination(X and Y) types was evidenced by the following observations : These zygote-like cells(i.e. heterocaryons) produced daughter cells of these parental types as well as non-agglutinative(Z) type cells of different ploidy.About half of the zygote-like cell cultures were presumed to be homogeneous polyploids (i.e. diploid of Z type and a homozygous diploid of Y type), whereas the rest of abnormal degrees of ploidy(i.e. 1.6; 1.7; 2.5; 2.7; 2.8; 3.5; 3.8) suggested that they had still remained as mixtures of haploid, diploid, triploid, and/ or tetraploid cells in various proportions. The segregation of agglutination-type alleles of several strains also showed heterogeneity as well as homogeneity with respect to the ploidy of cells composing the population.The agglutination types of these mixed cell populations originated from the heterocaryons on the whole degenerated from the X or Y type to the Z type during their successive transfer cultivation because of a gradual predominance of the Z type cells caused by the subsequent conjugation between the X and Y type daughter cells in the population.
社団法人日本生物工学会の論文
1971-04-25