Abstract
In Chilean rain forest the presence and distribution of yeasts were studied during the fungal transformation of wood, producing a partially delignified material used as cattle feed (“huempe”). A total of 68 yeast species was reported, including a noticeable proportions of basidiomycetous and xylose-assimilating strains, the latter related to the increased availability of this sugar in the decayed wood. The results of the mathematic comparison of taxonomic data of 327 strains showed a delimitation of sharp clusters corresponding to different species, including several new species described from this substrate, and genera, as Rhodotorula and Cryptococcus.
At the initial stages of wood decay, characterized by the presence of Candida species, yeast diversity was low. The highest values were found in the medium stage of decay, used as feed, with an important presence of the genera Apiotrichum, Rhodotorula, Cryptococcus and Schizoblastosporion. After establishing a non-linear ordination from Euclidean distances between samples, based on yeast abundances, a relationship was observed between the populations developing at the different stages of wood decay by Ganoderma applanatum. A succession of yeast species was demonstrated during wood degradation by this white-rot fungus.
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González, A.E., Martínez, A.T., Almendros, G. et al. A study of yeasts during the delignification and fungal transformation of wood into cattle feed in Chilean rain forest. Antonie van Leeuwenhoek 55, 221–236 (1989). https://doi.org/10.1007/BF00393851
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DOI: https://doi.org/10.1007/BF00393851