Leaf decomposing fungi influence Saccharomyces paradoxus growth across carbon environments
El-Khatib, S.; Lambert, M. G.; Reed, M. N.; Goncalves, M. B.; Boynton, P. J.
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Saccharomyces paradoxus is a model organism in ecology and evolution. However, its metabolism in its native habitat remains mysterious: it is frequently found growing on leaf litter, a habitat with few carbon sources that S. paradoxus can metabolize. We hypothesized that leaf-decomposing fungi from the same habitat break down the cellulose in leaf litter extracellularly and release glucose, supporting S. paradoxus growth. We found that facilitation by leaf-decomposing fungi was possible on cellulose and inhibition was common on glucose, suggesting diverse interactions between S. paradoxus and other fungi that have the potential to support S. paradoxus in nature.
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