Loss of Temperature Compensation of Circadian Period Length in the frq-9 Mutant of Neurospora crassa
نویسندگان
چکیده
منابع مشابه
Temperature Compensation of Circadian Period Length in Clock Mutants of Neurospora crassa.
Temperature compensation of circadian period length in 12 clock mutants of Neurospora crassa has been examined at temperatures between 16 and 34 degrees C. In the wild-type strain, below 30 degrees C (the "breakpoint" temperature), the clock is well-compensated (Q(10) = 1), while above 30 degrees C, the clock is less well-compensated (Q(10) = 1.3). For mutants at the frq locus, mutations that s...
متن کاملCircadian rhythms in Neurospora crassa: clock mutant effects in the absence of a frq-based oscillator.
In Neurospora, the circadian rhythm is expressed as rhythmic conidiation driven by a feedback loop involving the protein products of frq (frequency), wc-1 (white collar-1), and wc-2, known as the frq/wc (FWC) oscillator. Although strains carrying null mutations such as frq(10) or wc-2Delta lack a functional FWC oscillator and do not show a rhythm under most conditions, a rhythm can be observed ...
متن کاملThe relationship between FRQ-protein stability and temperature compensation in the Neurospora circadian clock.
Temperature compensation is an important property of all biological clocks. In Neurospora crassa, negative-feedback regulation on the frequency (frq) gene's transcription by the FRQ protein plays a central role in the organism's circadian pacemaker. Earlier model calculations predicted that the stability of FRQ should determine the period length of Neurospora's circadian rhythm as well as the r...
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15 صفحه اولA New Mutation Affecting FRQ-Less Rhythms in the Circadian System of Neurospora crassa
We are using the fungus Neurospora crassa as a model organism to study the circadian system of eukaryotes. Although the FRQ/WCC feedback loop is said to be central to the circadian system in Neurospora, rhythms can still be seen under many conditions in FRQ-less (frq knockout) strains. To try to identify components of the FRQ-less oscillator (FLO), we carried out a mutagenesis screen in a FRQ-l...
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ژورنال
عنوان ژورنال: Journal of Biological Rhythms
سال: 1986
ISSN: 0748-7304,1552-4531
DOI: 10.1177/074873048600100302