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Biological significance of the pseudomycelium in asporogenous yeasts

I. Reciprocical inhibition of parallel colonies

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Summary

By means of a quantitative investigation of mycelium formation in an asporogenous yeast the author reached the conclusion that pseudomycelium-production facilitates the absorption of nutrients when these are highly diluted in the culture medium. The reciprocical inhibition of mycelia by parallel growing colonies does not depend upon an inhibitory substance diffusing into the medium, but on the exhaustion of the culture medium.

Résumé

L'auteur ayant analizé par rechèrches quantitatives le phénomène de la filamentisation dans un champignon levuriforme conclue que la filamentisation a le but de faciliter l'absorption des matérieux nutritifs lorsque ces-ci sont bien dilués dans le milieu de culture. L'inibition réciproque entre le pseudomycelia des colonies de levure parallèles n'est pas déterminé par une substance emp/'echante qui se trasmet dans le milieu de culture, mais seulement par un empauvrissement des matérieux nutritifs.

Riassunto

I'A., avendo analizzato con esperienze quantitative, il fenomeno della filamentizzazione in un lievito asporigeno conclude che la comparsa del filamento ha lo scopo di facilitare l'assorbimento dei materiali nutritivi quando questi sono troppo scarsi nel mezzo di cultura. L'inibizione reciproca dei filamenti di colonie di lievito parallele non è dovuta ad una sostanza inibitrice diffusa nel mezzo di cultura ma semplicemente ad un impoverimento del mezzo culturale stesso.

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Bibliographie

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Magni, G. Biological significance of the pseudomycelium in asporogenous yeasts. Mycopathologia 4, 207–214 (1943). https://doi.org/10.1007/BF01237143

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  • DOI: https://doi.org/10.1007/BF01237143

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