Fruiting at High Temperature and Its Genetic Control in the Basidiomycete Flammulina velutipes

AUTOR(ES)

Fultz, Sara A.

RESUMO

Of 10 geographic strains of Flammulina velutipes, 4 were found capable of fruiting at 22°C (FrH) rather than at the typical 15°C (FrL). Crosses made between FrH and FrL monokaryons were never observed to fruit at 22°C. However, some hybrids did fruit at the intermediate temperature of 18°C when grown on appropriate substrates, indicating incomplete dominance of the low-temperature requirement. Analysis of progeny of five FrH × FrL crosses indicated that a minimum of two genes appears to control the requirement for fruiting at ≤15°C. The genes are not closely linked to either incompatibility locus.

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