Daily Cycles

2018 ◽  
pp. 47-60
Author(s):  
Brigid M. Costello
Keyword(s):  
Daily Cycles

CrayfishProcambarus clarkiiRetina and Nervous System Exhibit Antioxidant Circadian Rhythms Coupled with Metabolic and Luminous Daily Cycles

2009 ◽  
Vol 85 (1) ◽  
pp. 78-87 ◽  
Author(s):  
María Luisa Fanjul-Moles ◽  
Julio Prieto-Sagredo ◽  
Dario Santiago López ◽  
Ramón Bartolo-Orozco ◽  
Hugo Cruz-Rosas
Keyword(s):  
Nervous System ◽  
Circadian Rhythms ◽  
Daily Cycles

scholarly journals NMR-based investigation of the Drosophila melanogaster metabolome under the influence of daily cycles of light and temperature

2015 ◽  
Vol 11 (12) ◽  
pp. 3305-3315 ◽  
Author(s):  
Navdeep Gogna ◽  
Viveka Jagdish Singh ◽  
Vasu Sheeba ◽  
Kavita Dorai
Keyword(s):  
Drosophila Melanogaster ◽  
Diurnal Rhythm ◽  
Metabolic Processes ◽  
Daily Cycles ◽  
Metabolomic Approach

This work presents an NMR-based metabolomic approach to study metabolic processes inD. melanogasterthat exhibit a diurnal rhythm.

scholarly journals Problématique du bilan de carbone dans les écosystèmes forestiers: exemple d'une jeune hêtraie de plaine | Problematics of the Carbon Net-Balance Within the Forest Ecosystems: a Juvenile Beech Forest in the Lowlands

2000 ◽  
Vol 151 (9) ◽  
pp. 317-324
Author(s):  
André Granier ◽  
Claire Damesin ◽  
Daniel Epron ◽  
Valérie Le Dantec
Keyword(s):  
Biomass Production ◽  
Forest Ecosystems ◽  
Photosynthetic Activity ◽  
Carbon Fluxes ◽  
Beech Forest ◽  
High Variability ◽  
Daily Cycles

The results of an investigation carried through within the ‹Euroflux›-programme in eastern France assessing the carbon fluxes above the canopy of the forest are presented. The photosynthetic activity within the annual and daily cycles are discussed. The high variability of the carbon netbalance and the variation of the total respiration make further research into the understanding of the correlation between the carbon net-balance and the biomass production necessary.

scholarly journals Melatonin rhythm and other outputs of the master circadian clock in the desert goat ( Capra hircus ) are entrained by daily cycles of ambient temperature

2020 ◽  
Vol 68 (3) ◽  
Author(s):  
Hicham Farsi ◽  
Driss Harti ◽  
Mohamed R. Achaâban ◽  
Mohammed Piro ◽  
Véronique Raverot ◽  
...  
Keyword(s):  
Ambient Temperature ◽  
Circadian Clock ◽  
Capra Hircus ◽  
Melatonin Rhythm ◽  
Daily Cycles

scholarly journals Minireview: The Circadian Clockwork of the Suprachiasmatic Nuclei—Analysis of a Cellular Oscillator that Drives Endocrine Rhythms

Endocrinology ◽  
2007 ◽  
Vol 148 (12) ◽  
pp. 5624-5634 ◽  
Author(s):  
Elizabeth S. Maywood ◽  
John S. O’Neill ◽  
Johanna E. Chesham ◽  
Michael H. Hastings
Keyword(s):  
Neural Circuits ◽  
Clock Genes ◽  
Time Base ◽  
Suprachiasmatic Nuclei ◽  
Dark Cycle ◽  
Cellular Mechanisms ◽  
Circadian Control ◽  
Daily Cycles ◽  
Central Clock ◽  
Retinal Afferents

The secretion of hormones is temporally precise and periodic, oscillating over hours, days, and months. The circadian timekeeper within the suprachiasmatic nuclei (SCN) is central to this coordination, modulating the frequency of pulsatile release, maintaining daily cycles of secretion, and defining the time base for longer-term rhythms. This central clock is driven by cell-autonomous, transcriptional/posttranslational feedback loops incorporating Period (Per) and other clock genes. SCN neurons exist, however, within neural circuits, and an unresolved question is how SCN clock cells interact. By monitoring the SCN molecular clockwork using fluorescence and bioluminescence videomicroscopy of organotypic slices from mPer1::GFP and mPer1::luciferase transgenic mice, we show that interneuronal neuropeptidergic signaling via the vasoactive intestinal peptide (VIP)/PACAP2 (VPAC2) receptor for VIP (an abundant SCN neuropeptide) is necessary to maintain both the amplitude and the synchrony of clock cells in the SCN. Acute induction of mPer1 by light is, however, independent of VIP/VPAC2 signaling, demonstrating dissociation between cellular mechanisms mediating circadian control of the clockwork and those mediating its retinally dependent entrainment to the light/dark cycle. The latter likely involves the Ca2+/cAMP response elements of mPer genes, triggered by a MAPK cascade activated by retinal afferents to the SCN. In the absence of VPAC2 signaling, however, this cascade is inappropriately responsive to light during circadian daytime. Hence VPAC2-mediated signaling sustains the SCN cellular clockwork and is necessary both for interneuronal synchronization and appropriate entrainment to the light/dark cycle. In its absence, behavioral and endocrine rhythms are severely compromised.

Seasonal and daily cycles of surface ozone in the extratropical latitudes

2008 ◽  
Vol 44 (4) ◽  
pp. 474-485 ◽  
Author(s):  
A. M. Zvyagintsev ◽  
O. A. Tarasova ◽  
G. I. Kuznetsov
Keyword(s):  
Surface Ozone ◽  
Daily Cycles
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