Rhodotorula属に関する研究 (第9報) : 無胞子酵母類におけるCarotenogensisの分布

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For investigating the distributino of carotenogenesis among the asporogenous yeasts, twenty-nine yellow or pale-colored strains were selected from among seven hundred and forty-three cultures belonging to seventy-two species of the following genera : Cryptococcus (5 spp.), Torulopsis (22 spp.), Pityrosporum (1 sp.), Brettanomyces (3 spp.), Candida (30 spp.), Kloeckera (5 spp.), Trigonopsis (1 sp.), Trichosporon (4 spp.), (Rhodotorula was omitted.)The selected cultures were incubated at 28℃ for 4 days or more on a rotary shaker, and the extraction of the pigments from them was performed with acetone and petroleum ether.Among the above genera, only Cryptococcus was found to be a producer of the carotenoid pigments. As an exceptional species, Cr. neoformans was demonstrated to be incapable of forming the pigments through the investigation of five strains of it. Moreover, it was also found that the pigmentation in these strains of Cr. neoformans was not influenced at all by diphenylamine even in a dose sufficient to inhibit the pigment production in other Cryptococci. These results led to the conclusion that the intracellular pigment of Cr. neoformans cannot be regarded as a carotenoid.
社団法人日本生物工学会の論文
1961-04-15