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The internal circadian rhythms of cells and organisms coordinate their physiological properties …


Biology Articles » Chronobiology » A proposal for robust temperature compensation of circadian rhythms » Table 1

Table 1
- A proposal for robust temperature compensation of circadian rhythms

Representative list of clock mutants in N. crassa (20, 23) and D. melanogaster (13, 14, 21, 22)


Gene Allele name Period* at 25°C, h Temperature compensation
N. crassa
     frequency frq (wild type) 21.5 Yes

frq1 16.5 Yes

frq2 19.3 Yes

frq3 24.0 No

frq7 29.0 No
     period-1 prd-1 25.8 No
     period-2 prd-2 25.5 Yes
     period-3 prd-3 25.1 No
     period-4 prd-4 18.0 No
     period-6 prd-6 18.0 at 22°C Yes
     chrono chr 23.5 Yes
     white collar-2 wc-2 ER24 29.7 No
     arginine-13 arg-13 19.0 Yes
     chain elongation cel Variable No
     choline-1 chol-1 Variable No
     cytochrome a-5 cya-5 19.0 Yes
     cytochrome b-2 cyb-2 18.0 Yes
     cytochrome b-3 cyb-3 20.0 Yes
     cytochrome-4 cyt-4 20.0 Yes
     cysteine-4 cys-4 19.0 Yes
     cysteine-9 cys-9 Variable No
     cysteine-12 cys-12 19.0 Yes
     maternally inherited mi-2, mi-3, mi-5 18–19 Yes
     oligomycin resistant oliR 18–19 Yes
     phenylalanine-1 phe-1 19.0 Yes
Double mutants in
     N. crassa

prd-2; prd-3 32.7 No

prd-3; prd-6 18.6 Yes
D. melanogaster
     period per (wild type) 23.4 0.99

perS 18.9–19.7 1.09

perL 28.3–29.1 0.88

perSLIH 27.2–28.1 1.05–1.08
     double time dbtL 26.8 1.08

dbtS 18.7 1.04
     timeless timS2 21.9 0.96

timL2 26.5 1.00

timL1 28.1 1.02

timUL 32.9 0.98

timrit 25.5 at 24°C 0.91 (15–24°C)



0.62 (24–30°C)
Double mutants in
     D. melanogaster

     perL; dbtS 20.9 0.89

     perT; perSLIH 23.5 at 18°C 1.06

     perCLK; perSLIH 24.8 at 18°C 0.99

     per+; perSLIH 26.0 at 18°C 1.04

     per01; perSLIH 28.7 at 18°C 1.03

     per04; perSLIH 28.6 at 18°C 1.04

     perL; perSLIH 27.3 at 18°C 0.98

     timrit; perL 32.9 at 24°C 0.81 (15–24°C)



0.46 (24–30°C)

     timrit; perS 22 at 24°C 1.05 (15–24°C)



0.67 (24–30°C)

     timSL; perL 25.5 1.0
  • Most of N. crassa mutant list is adapted from Bell-Pedersen (20).

  • *Period at 25°C, unless otherwise indicated. A range of period is given when there are variations of period from different sources.

  • Values of Q10 are given when they are available from literature or if there are data points that allow us to calculate Q 10 = (T 2/T 1)10/(θ1−θ2) (43). A range of Q 10 is given when there are different values of Q 10 from different sources. Matsumoto et al. (22) use two different values of Q10, below and above 24°C. If a value of Q 10 is not available, simple “Yes” or “No” is used to represent either presence or absence of temperature compensation in N. crassa where Bell-Pedersen (20) used “+” or “−” to represent the data. “Yes” indicates that the period changes are <20% over a 10°C range in temperature.


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