Bergey's manual of systematic bacteriology
1987; Elsevier BV; Volume: 52; Issue: 1 Linguagem: Inglês
10.1016/0378-1119(87)90414-8
ISSN1879-0038
Tópico(s)Mycorrhizal Fungi and Plant Interactions
ResumoThe dominance of MATα among cryptococcal strains has been ascribed to MATa strains being more sensitive to certain environmental factors; however no study has attempted to identify these factors. During the present study we determined whether the chemical composition of woody debris may influence the occurrence of Cryptococcus gattii MATa. We observed a positive correlation between the numbers of C. gattii MATa and the ammonium-nitrogen (NH4–N) concentration in woody debris samples. Subsequent growth studies conducted in woody debris microcosms indicated that this positive correlation is likely not due to additional NH4Cl improving the growth of selected MATa strains. Instead, it might be due to the MATa strains competing better with the MATα strains in the presence of a high NH4Cl concentration compared to a low NH4Cl concentration. This exploratory study paves the way for future studies focused on the interactions of MATa and MATα strains with environmental factors.
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