抄録
GA3 was identified as a major GA in Neurospora crassa by gas chromatography/selected ion monitoring (GC/SIM) and its content was measured at various stages (0-96 hr after inoculation) of conidial germination and mycelial growth. The GA3 content in the fungus was 190ng/g dry weight at the initial stage and then decreased rapidly; that per liter culture decreased soon after the inoculation, and then increased to 17.6ng 96hr after inoculation. The GA3 concentration in the culture medium was around 10-11 M throughout the 96-hr incubation. The physiological role of endogenous GA in Neurospora crassa is also discussed.
