1965
DOI: 10.1007/bf02049924
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A model for rhythmic and temperature-independent growth in ‘clock’ mutants of neurospora

Abstract: The investigations described herein were carried out with two standard ('wild') strains and several morphological mutants in order to determine the effect of temperature on the growth rate and, more specificalIy, to study the banding and period of the 'clock' mutants in relation to temperature and growth rate. Strains A description of the strains used is provided below (the roman numeral following most of these descriptions designates the strain's linkage group): 4-121A(TS), 4-137a(TL): standard ('wild') strai… Show more

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Cited by 20 publications
(11 citation statements)
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“…This rhythm also may (Sussman et al, 1964) or may not (Bianchi, 1964;Berliner and Neurath, 1965) be damped out in constant light, and cannot be entrained to LD cycles (Neurath and Berliner, 1964). The growth rhythm in clock is temperature compensated above 20°C (Neurath and Berliner, 1964;Sussman et al, 1965). The hyphal branching rhythm in the wild-type strain on sorbose medium shows neither temperature compensation nor sensitivity to light (Feldman and Hoyle, 1974), and may be due to a phenomenon different from the clock hyphal branching rhythm.…”
Section: Discussionmentioning
confidence: 93%
See 1 more Smart Citation
“…This rhythm also may (Sussman et al, 1964) or may not (Bianchi, 1964;Berliner and Neurath, 1965) be damped out in constant light, and cannot be entrained to LD cycles (Neurath and Berliner, 1964). The growth rhythm in clock is temperature compensated above 20°C (Neurath and Berliner, 1964;Sussman et al, 1965). The hyphal branching rhythm in the wild-type strain on sorbose medium shows neither temperature compensation nor sensitivity to light (Feldman and Hoyle, 1974), and may be due to a phenomenon different from the clock hyphal branching rhythm.…”
Section: Discussionmentioning
confidence: 93%
“…"Non-circadian" rhythms in growth rate have been described in Neurospora grown on sorbose medium (Sussman et al, 1964;Feldman and Hoyle, 1974), in the mutant strain clock (Bianchi, 1964;Neurath and Berliner, 1964;Sussman et al, 1964;Sussman et al, 1965) and in some colonial mutants (Durkee et al, 1966). Such rhythms have been reported in slow-growing cultures, and the periods of these rhythms are affected by the medium composition; therefore they resemble chol-1 in some respects.…”
Section: Discussionmentioning
confidence: 98%
“…Among the fungi, a number of noncircadian rhythms in development have been described (for review, see Bünning 1973) in otherwise wild-type strains. An early example is the clock strain (Sussman et al 1964(Sussman et al , 1965, identified as producing a rhythm in growth when cultured in race tubes, but later shown to not be circadian (Feldman and Hoyle 1974).…”
Section: Frq-less Oscillators and Other Noncircadian Feedback Loopsmentioning
confidence: 99%
“…These developmental rhythms fulfilled the criteria discussed above for defining them as circadian; they had a sustained period of ∼22.5 h under constant conditions; the phase was set by a single transition from light to dark; they could be entrained by a 24‐h light cycle; and the period was not very dependent on ambient temperature. A variety of Neurospora strains that helped to visualize rhythms appeared contemporaneously in the literature, all with rhythmic‐inspired nomenclature including patch (Stadler, 1959), clock and wrist watch (Sussman et al , 1965), timex and band (Sargent et al , 1966), all revealing underlying metabolic rhythms through the production of conidia. Interestingly, though, not all of the rhythms exposed in these strains were subsequently shown to be truly circadian in nature and so most of the strains have fallen out of use.…”
Section: Introductionmentioning
confidence: 99%