Comparison of phase shifting by temperature of wild type Neurospora crassa and the clock mutant, frq-7
Titel:
Comparison of phase shifting by temperature of wild type Neurospora crassa and the clock mutant, frq-7
Auteur:
Nakashima, Hideaki
Verschenen in:
Biological rhythm research
Paginering:
Jaargang 18 (1987) nr. 1 pagina's 1-8
Jaar:
1987-05
Inhoud:
Phase shifting of the circadian conidiation rhythm of Neurospora crassa by pulse treatments with different temperatures, which ranged from 10° to 35°, was compared for the wild type and the clock mutant, frq-7, in liquid culture. Both strains showed similar phase response curves' for high temperature (35°) but different phase response curves for low temperature (15°). In the wild type strain, pulses with temperatures higher than 25° caused small shifts in phase in the subjective day phase but pulses with temperatures lower than 25° caused large phase-delay in the same phase. The clock mutant, frq-7, showed similar responses to temperature pulses in phases other than the late subjective day phase (CT 9 to CT 14), during which frq-7 was almost intensitive to pulses with temperatures lower than 25°. This phase (CT 9 to CT 14) coincided with the phase which has previously been proposed to be affected by mutations at the frq locus.
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