- Plant circadian clocks increase photosynthesis, growth, survival, and competitive advantage
Antony N Dodd
Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EA, UK
Science 309:630-3. 2005
..This explains why plants gain advantage from circadian control...
- Evolution of a behavioral shift mediated by superficial neuromasts helps cavefish find food in darkness
Department of Biology, University of Maryland, College Park, 20742, USA
Curr Biol 20:1631-6. 2010
How cave animals adapt to life in darkness is a poorly understood aspect of evolutionary biology ...
- Darkness induces mobility, and saturation deficit limits questing duration, in the tick Ixodes ricinus
Jean Luc Perret
Institute of Zoology, University of Neuchatel, Rue Emile Argand 11, 2007 Neuchatel, Switzerland
J Exp Biol 206:1809-15. 2003
..Almost all locomotor activities of I. ricinus occurred during darkness under either a 14 h:10 h L:D or a 8 h:4 h L:D cycle. We established that all life stages of I...
- Constitutive expression of the CIRCADIAN CLOCK ASSOCIATED 1 (CCA1) gene disrupts circadian rhythms and suppresses its own expression
Z Y Wang
Department of Molecular, Cell, and Developmental Biology, UCLA, Los Angeles, California 90095 1606, USA
Cell 93:1207-17. 1998
..Furthermore, the expression of both endogenous CCA1 and the related LHY gene was suppressed. Our results suggest that CCA1 is a part of a feedback loop that is closely associated with the circadian clock in Arabidopsis...
- Resetting central and peripheral circadian oscillators in transgenic rats
NSF Center for Biological Timing and Department of Biology, University of Virginia, Charlottesville, VA 22903-2477, USA
Science 288:682-5. 2000
- Rods-cones and melanopsin detect light and dark to modulate sleep independent of image formation
C M Altimus
Department of Biology, Johns Hopkins University, Baltimore, MD 21218, USA
Proc Natl Acad Sci U S A 105:19998-20003. 2008
..Thus, in addition to their known role in aligning circadian physiology with day and night, ipRGCs also relay light and dark information from both rod-cone and melanopsin-based pathways to modulate sleep and wakefulness...
- Impacts of drought on leaf respiration in darkness and light in Eucalyptus saligna exposed to industrial-age atmospheric CO₂ and growth temperature
Plant Sciences Division, Research School of Biology, Building 46, The Australian National University, Canberra, ACT 0200, Australia
New Phytol 190:1003-18. 2011
..Rates of R in darkness (R(dark) ) and light (R(light) ), photosynthesis (A) and related leaf traits (mass : area relationships, and ..
- A critical role for ureides in dark and senescence-induced purine remobilization is unmasked in the Atxdh1 Arabidopsis mutant
The Jacob Blaustein Institutes for Desert Research, The Albert Katz Department of Dryland Biotechnologies, Ben Gurion University, PO Box 653, Beer Sheva 84105, Israel
Plant J 54:496-509. 2008
..We observed that in wild-type plants conditions of extended darkness or increasing leaf age caused induction of transcripts related to purine catabolism, resulting in marked ..
- Cerebellum shapes hippocampal spatial code
Neurobiologie des Processus Adaptatifs UMR 7102, Navigation, Memory, and Aging ENMVI Team, Université Pierre et Marie Curie Centre National de la Recherche Scientifique CNRS, F 75005 Paris, France
Science 334:385-9. 2011
..Together, these results suggest that cerebellar PKC-dependent mechanisms are involved in processing self-motion signals essential to the shaping of hippocampal spatial representation...
- HY5, Circadian Clock-Associated 1, and a cis-element, DET1 dark response element, mediate DET1 regulation of chlorophyll a/b-binding protein 2 expression
Bridey B Maxwell
Plant Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, California 92037, USA
Plant Physiol 133:1565-77. 2003
..We conclude that DET1 represses the CAB2 promoter in the dark by regulating the binding of two factors, CAB2 DET1-associated factor 1 and Circadian Clock-Associated 1, to the DtRE...
- Rhythmic growth explained by coincidence between internal and external cues
Section of Plant Biology, College of Biological Sciences, University of California, Davis, One Shields Avenue, Davis, California 95616, USA
Nature 448:358-61. 2007
..This interaction may serve as a paradigm for understanding how endogenous and environmental signals cooperate to control other processes...
- Differential coloring reveals that plastids do not form networks for exchanging macromolecules
Martin H Schattat
Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario N1G2W1, Canada
Plant Cell 24:1465-77. 2012
- Light-induced structural and functional plasticity in Drosophila larval visual system
Howard Hughes Medical Institute, Department of Physiology and Biochemistry, University of California, San Francisco, 1550 4th Street, San Francisco, CA 94158, USA
Science 333:1458-62. 2011
- Overexpression of Arabidopsis acyl-CoA binding protein ACBP3 promotes starvation-induced and age-dependent leaf senescence
School of Biological Sciences, University of Hong Kong, Pokfulam, Hong Kong, China
Plant Cell 22:1463-82. 2010
..Accelerated senescence in ACBP3-OEs is dependent on salicylic acid but not jasmonic acid signaling...
- Gibberellins modulate light signaling pathways to prevent Arabidopsis seedling de-etiolation in darkness
Instituto de Biología Molecular y Celular de Plantas CSIC UPV, Av De Los Naranjos s n, 46022 Valencia, Spain
Plant J 53:324-35. 2008
..Seedlings deficient in gibberellin (GA) synthesis or signaling display a de-etiolated phenotype when grown in darkness, equivalent to the phenotype of cop1 mutants, which indicates that the switch between photo- and ..
- Light deprivation damages monoamine neurons and produces a depressive behavioral phenotype in rats
M M C Gonzalez
Department of Psychiatry, School of Medicine, University of Pennsylvania, Philadelphia, PA 19104 6100, USA
Proc Natl Acad Sci U S A 105:4898-903. 2008
..We recently showed that rats kept for 6 weeks in constant darkness (DD) have anatomical and behavioral features similar to depressed patients, including dysregulation of circadian ..
- Scototaxis as anxiety-like behavior in fish
Laboratório de Neurociências e Comportamento, Instituto de Ciencias Biologicas, Universidade Federal do Para, Belem, Brazil
Nat Protoc 5:209-16. 2010
..When individual animals are exposed to the apparatus on only one occasion, results can be obtained in 20 min per fish...
- Constant darkness induces IL-6-dependent depression-like behavior through the NF-κB signaling pathway
Francisco J Monje
Department of Neurophysiology and Neuropharmacology, Medical University of Vienna, 1090 Vienna, Austria
J Neurosci 31:9075-83. 2011
..Here we investigate whether long-term light deprivation in the constant darkness (DD) paradigm affects depression-like behavior in mice and concomitantly modulates the levels of proinflammatory ..
- Reactivation of ocular dominance plasticity in the adult visual cortex
Scuola Normale Superiore, 56100 Pisa, Italy
Science 298:1248-51. 2002
..The mature ECM is thus inhibitory for experience-dependent plasticity, and degradation of CSPGs reactivates cortical plasticity...
- Image statistics and the perception of surface qualities
Human and Information Science Lab, NTT Communication Science Labs, Nippon Telegraph and Telephone Corporation, 3 1 Morinosato Wakamiya, Atsugi, 243 0198, Japan
Nature 447:206-9. 2007
..We suggest that there are neural mechanisms sensitive to skewed statistics, and that their outputs can be used in estimating surface properties...
- The genetic basis of singlet oxygen-induced stress responses of Arabidopsis thaliana
Institute of Plant Sciences, Plant Genetics, Swiss Federal Institute of Technology ETH, CH 8092 Zurich, Switzerland
Science 306:1183-5. 2004
..Instead, seedling lethality and growth inhibition of mature plants result from genetic programs that are activated after the release of singlet oxygen has been perceived by the plant...
- Circadian rhythms confer a higher level of fitness to Arabidopsis plants
Rachel M Green
Department of Molecular, Cell and Developmental Biology, P O Box 160606, University of California Los Angeles, Los Angeles, CA 90095 1606, USA
Plant Physiol 129:576-84. 2002
..In addition, we demonstrate that two other circadian rhythm mutants, LHY-ox and elf3, have low-viability phenotypes. Our findings demonstrate the adaptive advantage of circadian rhythms in Arabidopsis...
- ATP consumption by mammalian rod photoreceptors in darkness and in light
Neuroscience Graduate Program, Zilkha Neurogenetic Institute, USC Keck School of Medicine, Los Angeles, CA 90089, USA
Curr Biol 18:1917-21. 2008
..In darkness, rods consume 10(8) ATP s(-1), about the same as Drosophila photoreceptors...
- The F-box protein slimb controls the levels of clock proteins period and timeless
Institut de Neurobiologie Alfred Fessard NGI, CNRS UPR 2216, Centre National de la Recherche Scientifique, av de la Terrasse, 91198 Gif sur Yvette, France
Nature 420:178-82. 2002
..In constant darkness, highly phosphorylated forms of the Per and Tim proteins are constitutively present in the mutants, indicating ..
- A transcription factor response element for gene expression during circadian night
Hiroki R Ueda
Molecular Medicine Laboratories, Institute for Drug Discovery Research, Yamanouchi Pharmaceutical Company, Ltd, 21 Miyukigaoka, Tsukuba, Ibaraki 305 8585, Japan
Nature 418:534-9. 2002
..We profiled suprachiasmatic nuclei and liver genome-wide expression patterns under light/dark cycles and constant darkness. We determined transcription start sites of human orthologues for newly identified cycling genes and then ..
- Differential effects of eyes open or closed in darkness on brain activation patterns in blind subjects
Department of Neurology, Klinikum Grosshadern, Ludwig Maximilians University, 81377 Munich, Germany
Neurosci Lett 466:30-4. 2009
..specific task conditions can be compared to a reference condition which is often eyes-open or eyes-closed in darkness without the execution of a specific task...
- It is darkness and not light: Depression-like behaviors of diurnal unstriped Nile grass rats maintained under a short photoperiod schedule
Department of Zoology, Tel Aviv University, Tel Aviv, Israel
J Neurosci Methods 186:165-70. 2010
- Darkness reduces BDNF expression in the visual cortex and induces repressive chromatin remodeling at the BDNF gene in both hippocampus and visual cortex
Nina N Karpova
Sigrid Jusélius Laboratory, Neuroscience Center, University of Helsinki, Helsinki, Finland
Cell Mol Neurobiol 30:1117-23. 2010
Neuronal activity regulates the expression of brain-derived neurotrophic factor (BDNF) in brain. In darkness, reduced neuronal activity in the visual cortex markedly decreases total BDNF transcription level in adult rats...
- Night-time neuronal activation of Cluster N in a day- and night-migrating songbird
AG Neurosensorik, Institut für Biologie und Umweltwissenschaften, University of Oldenburg, D 26111 Oldenburg, Germany
Eur J Neurosci 32:619-24. 2010
- Role of melanopsin in circadian responses to light
Norman F Ruby
Department of Biological Sciences, Stanford University, Stanford, CA 94305, USA
Science 298:2211-3. 2002
..Although melanopsin is not essential for the circadian clock to receive photic input, it contributes significantly to the magnitude of photic responses...
- The changing biological roles of melatonin during evolution: from an antioxidant to signals of darkness, sexual selection and fitness
Dun Xian Tan
Department of Cellular and Structural Biology, The University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
Biol Rev Camb Philos Soc 85:607-23. 2010
..These functions likely include the chemical expression of darkness in vertebrates, environmental tolerance in fungi and plants, sexual signaling in birds and fish, seasonal ..
- Dark rearing alters the development of GABAergic transmission in visual cortex
Mind Brain Institute, Johns Hopkins University, Baltimore, Maryland 21218, USA
J Neurosci 22:8084-90. 2002
..Thus, sensory experience appears to play a permissive role in the maturation of intracortical GABAergic circuits...
- Light during darkness and cancer: relationships in circadian photoreception and tumor biology
Samar A Jasser
Department of Neurology, Light Research Program, Thomas Jefferson University, 1025 Walnut Street, Suite 507, Philadelphia, PA 19107, USA
Cancer Causes Control 17:515-23. 2006
..Continued rigorous empirical inquiry into the physiology and clinical implications of these habitual, integrated aspects of life is highly warranted at this time...
- Alterations in serum melatonin and sleep in individuals in a sub-arctic region from winter to spring
Psychiatric Department, University of Tromsø, Norway
Int J Circumpolar Health 62:242-54. 2003
- Maltose is the major form of carbon exported from the chloroplast at night
Sean E Weise
Department of Botany, University of Wisconsin Madison, 430 Lincoln Drive, Madison, WI 53706 USA
Planta 218:474-82. 2004
..we determined that maltose was distributed equally between the chloroplast and cytosolic fractions during darkness. In the light there was approximately 24% more maltose in the cytosol than the chloroplast...
- Differences of acute versus chronic ethanol exposure on anxiety-like behavioral responses in zebrafish
Department of Bioengineering and Therapeutic Sciences, Programs in Biological Sciences and Human Genetics, University of California, San Francisco, CA 94143 2811, United States
Behav Brain Res 219:234-9. 2011
- Response of the human circadian system to millisecond flashes of light
Jamie M Zeitzer
Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California, United States of America
PLoS ONE 6:e22078. 2011
..These data are consistent with the hypothesis that the circadian system can temporally integrate extraordinarily brief light exposures...
- Directional control of hippocampal place fields
K J Jeffery
Department of Anatomy and Developmental Biology, University College London, UK
Exp Brain Res 117:131-42. 1997
..When room cues were present, distal visual cues predominated over internal cues in establishing place field orientation...
- Arabidopsis nitric oxide synthase1 is targeted to mitochondria and protects against oxidative damage and dark-induced senescence
Fang Qing Guo
Section of Cell and Developmental Biology, Division of Biological Sciences, University of California at San Diego, La Jolla, 92093 0116, USA
Plant Cell 17:3436-50. 2005
..These results demonstrate that NOS1 is a mitochondrial NOS that reduces ROS levels, mitigates oxidative damage, and acts as an antisenescence agent...
- Quantitative x-ray dark-field computed tomography
Physik Department, Technische Universitat Munchen, 85748 Garching, Germany
Phys Med Biol 55:5529-39. 2010
- Expression of the circadian clock-related gene pex in cyanobacteria increases in darkness and is required to delay the clock
International Graduate School of Arts and Sciences, Yokohama City University, Seto 22 2, Yokohama 236 0027, Japan
J Biol Rhythms 21:235-44. 2006
..Levels of pex mRNA increased significantly in a 12-h exposure to darkness. Western blotting with a GST-Pex antibody revealed a 13...
- Genome-wide dynamic transcriptional profiling of the light-to-dark transition in Synechocystis sp. strain PCC 6803
Ryan T Gill
Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
J Bacteriol 184:3671-81. 2002
- Effects of anxiolytics in zebrafish: similarities and differences between benzodiazepines, buspirone and ethanol
Daiane L Gebauer
Laboratório de Neuroquímica e Psicofarmacologia, Departamento de Biologia Celular e Molecular, Programa de Pós Graduação em Biologia Celular e Molecular, Faculdade de Biociencias, Pontificia Universidade Catolica do Rio Grande do Sul, Avenida Ipiranga, 6681, 90619 900 Porto Alegre, RS, Brazil
Pharmacol Biochem Behav 99:480-6. 2011
..Height in the tank and shoal cohesion seem to be useful behavioral parameters in discriminating different classes of these drugs...
- Molecular analysis of photic inhibition of blood-feeding in Anopheles gambiae
W, Harry Feinstone Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, 615N Wolfe Street, Baltimore, MD 21205 2179, USA
BMC Physiol 8:23. 2008
- Evidence from opsin genes rejects nocturnality in ancestral primates
Department of Ecology and Evolution, University of Chicago, 1101 East 57th Street, Chicago, IL 60637, USA
Proc Natl Acad Sci U S A 102:14712-6. 2005
..This view is further supported by the distribution pattern of the middle-wavelength (M) and long-wavelength (L) opsin genes among prosimians...
- The chlorophyllases AtCLH1 and AtCLH2 are not essential for senescence-related chlorophyll breakdown in Arabidopsis thaliana
Institute of Plant Sciences, University of Bern, Altenbergrain 21, CH 3013 Bern, Switzerland
FEBS Lett 581:5517-25. 2007
..From our data we conclude that AtCLHs are not required for senescence-related chlorophyll breakdown in vivo and propose that genuine chlorophyllase has not yet been molecularly identified...
- Entrainment of the rat motor activity rhythm: effects of the light-dark cycle and physical exercise
Departament de Fisiologia, Divisió IV, Facultat de Farmacia, Universitat de Barcelona, Barcelona, Spain
Physiol Behav 70:227-32. 2000
..Rats were maintained first under LD cycles and afterwards under constant darkness (DD). Motor activity was recorded throughout the whole experiment by means of activity meters with infrared beams...
- Flow of energy in the outer retina in darkness and in light
Jonathan D Linton
Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
Proc Natl Acad Sci U S A 107:8599-604. 2010
..energy flows from these central mitochondria as phosphocreatine toward the photoreceptor's synaptic terminal in darkness. In light, it flows in the opposite direction as ATP toward the outer segment...
- Rapid induction of distinct stress responses after the release of singlet oxygen in Arabidopsis
Roel G L op den Camp
Institute of Plant Sciences, Plant Genetics, Swiss Federal Institute of Technology, CH 8092 Zurich, Switzerland
Plant Cell 15:2320-32. 2003
..Its biological activity in Arabidopsis exhibits a high degree of specificity that seems to be derived from the chemical identity of this reactive oxygen species and/or the intracellular location at which it is generated...
- Visual deprivation decreases somatic GAD65 puncta number on layer 2/3 pyramidal neurons in mouse visual cortex
Department of Biology, University of Maryland, College Park, 20742, USA
Neural Plast 2009:415135. 2009
..There was no change in GAD65-puncta volume or intensity. These results support the reorganization of inhibitory circuitry within layer 2/3 of visual cortex in response to changes in visual experience...
- Biological clock in total darkness: the Clock/MOP3 circadian system of the blind subterranean mole rat
Institute of Evolution, University of Haifa, Mount Carmel, Haifa 31905, Israel
Proc Natl Acad Sci U S A 98:13751-6. 2001
..Understanding Clock/MOP3 function could highlight circadian mechanisms in blind mammals and their unique pattern as a result of adapting to life underground...
- Circadian adaptation to night-shift work by judicious light and darkness exposure
Diane B Boivin
Centre for Study and Treatment of Circadian Rhythms, Douglas Hospital Research Centre, Department of Psychiatry, McGill University, Montreal, Quebec H4H 1R3, Canada
J Biol Rhythms 17:556-67. 2002
..On work days, participants maintained regular sleep/wake schedules including a single 8-h sleep/darkness episode beginning 2 h after the end of the night shift...
- Multiple phytochrome-interacting bHLH transcription factors repress premature seedling photomorphogenesis in darkness
Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA
Curr Biol 18:1815-23. 2008
..in colonizing the land was the evolution of a developmental strategy, termed skotomorphogenesis, whereby postgerminative seedlings emerging from buried seed grow vigorously upward in the subterranean darkness toward the soil surface.
- The basic helix-loop-helix transcription factor PIF5 acts on ethylene biosynthesis and phytochrome signaling by distinct mechanisms
Department of Plant and Microbial Biology, University of California, Berkeley, California 94720, USA
Plant Cell 19:3915-29. 2007
..data thus indicate that overexpressed PIF5 causes altered ethylene levels, which promote the triple response in darkness, whereas in the light, the interaction of photoactivated phyB with PIF5 causes degradation of the photoreceptor ..
- Transient release of oxygenated volatile organic compounds during light-dark transitions in Grey poplar leaves
Institut fur Ionenphysik, Leopold Franzens Universitat Innsbruck, A 6020 Innsbruck, Austria
Plant Physiol 135:1967-75. 2004
- Persistence of experience-induced homeostatic synaptic plasticity through adulthood in superficial layers of mouse visual cortex
Department of Biology, College of Chemical and Life Sciences, University of Maryland, College Park, Maryland 20742, USA
J Neurosci 27:6692-700. 2007
..Our results demonstrate that the superficial layers of adult mouse visual cortex retain the ability to undergo reversible experience-dependent homeostatic synaptic plasticity...
- A comparison of the expression patterns of several senescence-associated genes in response to stress and hormone treatment
L M Weaver
Dept of Biochemistry, University of Wisconsin at Madison, 53706, USA
Plant Mol Biol 37:455-69. 1998
..genes (SAGs) in attached and/or detached leaves was compared in response to age, dehydration, darkness, abscisic acid, cytokinin, and ethylene treatments...
- Light-regulated subcellular translocation of Drosophila TRPL channels induces long-term adaptation and modifies the light-induced current
Zoological Institute, Department of Cell and Neurobiology, University of Karlsruhe, 76128 Karlsruhe, Germany
Neuron 34:83-93. 2002
..background lights, and they respond to a wider range of light intensities, which fit them to function better in darkness or dim background illumination...
- Comparative study on nocturnal behavior of Aedes aegypti and Aedes albopictus
Department of Vector Ecology and Environment, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Nagasaki 852 8523, Japan
J Med Entomol 42:312-8. 2005
..01 foot candle) in Ae. aegypti and >10 lx (approximately 1 foot candle) in Ae. albopictus. Complete darkness during the daytime deactivated the host-seeking activity of both species, irrespective of their increasing flight ..
- Isolation and characterization of rice phytochrome A mutants
Department of Plant Physiology, National Institute of Agrobiological Resources, Tsukuba, Ibaraki 305 8602, Japan
Plant Cell 13:521-34. 2001
- Gibberellins repress photomorphogenesis in darkness
Instituto de Biologia Molecular y Celular de Plantas, Valencia 46022, Spain
Plant Physiol 134:1050-7. 2004
Plants undergo two different developmental programs depending on whether they are growing in darkness (skotomorphogenesis) or in the presence of light (photomorphogenesis)...
- Melanopsin (Opn4) requirement for normal light-induced circadian phase shifting
Genomics Institute of the Novartis Research Foundation, 10675 John J Hopkins Drive, San Diego, CA 92121, USA
Science 298:2213-6. 2002
..entrain to a light/dark cycle and do not exhibit any overt defect in circadian activity rhythms under constant darkness. However, they display severely attenuated phase resetting in response to brief pulses of monochromatic light, ..
- Melatonin, hormone of darkness and more: occurrence, control mechanisms, actions and bioactive metabolites
Johann Friedrich Blumenbach Institute of Zoology and Anthropology, University of Gottingen, Gottingen, Germany
Cell Mol Life Sci 65:2001-18. 2008
..Moreover, melatonin is a source of bioactive metabolites, such as 5-methoxytryptamine, N(1)-acetyl-N(2)-formyl-5-methoxykynuramine and N(1)-acetyl-5-methoxykynuramine...
- Light and darkness regulate melanopsin in the retinal ganglion cells of the albino Wistar rat
Department of Clinical Biochemistry, Bispebjerg Hospital, University of Copenhagen, DK 2400 Copenhagen NV, Denmark
J Mol Neurosci 27:147-55. 2005
..of melanopsin at the mRNA and protein level during a day/night cycle and during prolonged periods of light and darkness in the retina of albino Wistar rats...
- Visual deprivation alters development of synaptic function in inner retina after eye opening
Department of Ophthalmology, UCSF School of Medicine, San Francisco, CA 94143, USA
Neuron 32:439-49. 2001
..These findings indicate there is a degree of activity-dependent plasticity in the mammalian retina that has not been previously described...
- Influence of photoperiod duration and light-dark transitions on entrainment of Per1 and Per2 gene and protein expression in subdivisions of the mouse suprachiasmatic nucleus
Department of Neurohumoral Regulations, Institute of Physiology, v v i, Academy of Sciences of the Czech Republic, Czech Republic
Eur J Neurosci 30:1802-14. 2009
..The data indicate that the twilight photoperiod provides stronger synchronization among the individual SCN cell subpopulations than the rectangular one, and the effect is more pronounced under the short than under the long photoperiod...
- Circadian clock gene expression in the coral Favia fragum over diel and lunar reproductive cycles
Kenneth D Hoadley
Department of Biology and Marine Biology, University of North Carolina Wilmington, Wilmington, North Carolina, United States of America
PLoS ONE 6:e19755. 2011
..fragum. Our results suggest a molecular clock mechanism, potentially similar to that in described in fruit flies, exists within F. fragum...
- Rice tillering dwarf mutant dwarf3 has increased leaf longevity during darkness-induced senescence or hydrogen peroxide-induced cell death
Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Tokyo, Japan
Genes Genet Syst 82:361-6. 2007
Senescence or cell death in plant leaves is known to be inducible by darkness or H(2)O(2). When the Arabidopsis gene MAX2/ORE9 is disrupted, leaf senescence or cell death in response to the above stimuli is delayed...
- The giant kelp Macrocystis pyrifera presents a different nonphotochemical quenching control than higher plants
Departamento de Oceanografía Biológica, Centro de Investigacion Cientifica y de Educacion Superior de Ensenada, Km 107 Carretera Tijuana Ensenada, Ensenada, BC, México CP 22860
New Phytol 173:526-36. 2007
..pyrifera, in contrast to higher plants, the transthylakoid proton gradient alone does not induce NPQ. The role of this gradient seems to be related only to the activation of the violaxanthin de-epoxidase enzyme...
- Does night-time transpiration contribute to anisohydric behaviour in a Vitis vinifera cultivar?
Suzy Y Rogiers
National Wine and Grape Industry Centre, NSW Department of Primary Industries and Charles Sturt University, Wagga Wagga, NSW 2678, Australia
J Exp Bot 60:3751-63. 2009
..Night-time and daytime water loss and insufficient stomatal regulation therefore account for the tendency to anisohydric behaviour shown by Semillon...
- Complex circadian regulation of pineal melatonin and wheel-running in Syrian hamsters
J A Elliott
Hopkins Marine Station, Stanford University, Pacific Grove, CA 93950
J Comp Physiol A 174:469-84. 1994
..and activity duration (alpha) were both 4-5 h longer after 12 or 27 weeks than after 5 or 6 days in continuous darkness (DD)...
- Vasopressin receptor V1a regulates circadian rhythms of locomotor activity and expression of clock-controlled genes in the suprachiasmatic nuclei
Jia Da Li
Dept of Pharmacology, Univ of California, Irvine, 92697, USA
Am J Physiol Regul Integr Comp Physiol 296:R824-30. 2009
..These studies thus indicate that AVP-V1a signaling plays an important role in the generation of overt circadian rhythms...
- Hedgehog signalling controls eye degeneration in blind cavefish
Department of Biology, University of Maryland, College Park, Maryland 20742, USA
Nature 431:844-7. 2004
..These features can be mimicked in surface fish by twhh and/or shh overexpression, supporting the role of hh signalling in the evolution of cavefish eye regression...
- Alteration of organic acid metabolism in Arabidopsis overexpressing the maize C4 NADP-malic enzyme causes accelerated senescence during extended darkness
Botanisches Institut, Universitat zu Koln, 50931 Cologne, Germany
Plant Physiol 145:640-52. 2007
..Thus, in prolonged darkness these metabolites are consumed faster than in the wild type and, as a consequence, MEm plants enter irreversible ..
- Altered patterns of sleep and behavioral adaptability in NPAS2-deficient mice
Carol A Dudley
Department of Biochemistry, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390 9152, USA
Science 301:379-83. 2003
..Our results indicate that NPAS2 plays a substantive role in maintaining circadian behaviors in normal LD and feeding conditions and that NPAS2 is critical for adaptability to food restriction...
- Nuclear targeted AtS40 modulates senescence associated gene expression in Arabidopsis thaliana during natural development and in darkness
Institute of Botany, University of Kiel, Olshausenstrasse 40, 24098 Kiel, Germany
Plant Mol Biol 73:379-90. 2010
..While in the wildtype expression of AtS40-3 was activated by darkness, in the s40-3a mutant the expression of AtS40-3 stayed at a low level...
- Response to darkness of late-responsive dark-inducible genes is positively regulated by leaf age and negatively regulated by calmodulin-antagonist-sensitive signalling in Arabidopsis thaliana
Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo ku, Hongo, Japan
Plant Cell Physiol 46:1741-6. 2005
Induction after prolonged darkness distinguishes the late-responsive genes din2 and din9 from the early-responsive gene din3 in Arabidopsis...
- The growth of tomato (Lycopersicon esculentum Mill.) hypocotyls in the light and in darkness differentially involves auxin
Laboratoire de Physiologie Cellulaire et Moleculaire des Plantes, Universite Pierre et Marie Curie, Paris, France
Plant Sci 161:1067-74. 2001
..Interestingly, the dgt mutant and NPA-treated seedlings exhibit a looped phenotype only under red light, indicating that the negative gravitropism of hypocotyls also differentially involves auxin in the various light conditions...
- Time-course of tomato whole-plant respiration and fruit and stem growth during prolonged darkness in relation to carbohydrate reserves
INRA, Unité Plantes et Systèmes de culture Horticoles, Domaine St Paul, Site Agroparc, 84914 Avignon Cedex 9, France
Ann Bot 91:429-38. 2003
..the dynamics of growth, respiration and carbohydrate reserves of tomato plants were observed in prolonged darkness. Four days prior to the experiments, plants were exposed to high or low light levels and CO(2) concentrations...
- The sunflower HD-Zip transcription factor HAHB4 is up-regulated in darkness, reducing the transcription of photosynthesis-related genes
Pablo A Manavella
Cátedra de Biología Celular y Molecular, Facultad de Bioquimica y Ciencias Biologicas, Universidad Nacional del Litoral, CONICET, CC 242 Ciudad Universitaria, 3000, Santa Fe, Argentina
J Exp Bot 59:3143-55. 2008
..In this study it is shown that the expression of HAHB4 is induced in darkness and quickly disappears when plants are exposed to light...
- Fear of the dark: interactive effects of beliefs about danger and ambient darkness on ethnic stereotypes
Department of Psychology, University of British Columbia, Vancouver, BC, Canada
Pers Soc Psychol Bull 29:637-49. 2003
Two studies examined effects of ambient darkness and chronic beliefs about danger on activation of stereotypes about Blacks. Chronic beliefs were measured by a Belief in a Dangerous World (BDW) questionnaire...
- Intracellular phosphorus metabolism of Microcystis aeruginosa under various redox potential in darkness
State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, PR China
Microbiol Res 158:345-52. 2003
..Phosphorus metabolism of Microcystis aeruginosa was studied under gradient redox potential from 252 mV to -70 mV in darkness. The release of phosphorus occurred in all the treatments, and this process was accelerated in darkness when the ..
- Synaptic influences on rat ganglion-cell photoreceptors
Kwoon Y Wong
Department of Neuroscience, Brown University, Box G L471, Providence, RI 02912, USA
J Physiol 582:279-96. 2007
..In constant darkness all ipRGCs received spontaneous excitatory and inhibitory synaptic inputs...
- The role of low soil temperature in the inhibition of growth and PSII function during dark chilling in soybean genotypes of contrasting tolerance
Abram J Strauss
Section Botany, School of Environmental Sciences and Development, North West University, Potchefstroom Campus, Potchefstroom 2522, South Africa
Physiol Plant 131:89-105. 2007
- Rice NTRC is a high-efficiency redox system for chloroplast protection against oxidative damage
Juan Manuel Pérez-Ruiz
Instituto de Bioquimica Vegetal y Fotosintesis, Centro de Investigaciones Cientificas Isla de la Cartuja, 41092 Seville, Spain
Plant Cell 18:2356-68. 2006
..Constitutive expression of wild-type NTRC in mutant transgenic lines rescued this phenotype. Moreover, prolonged darkness followed by light/dark incubation produced an increase in hydrogen peroxide and lipid peroxidation in leaves and ..
- Retina is structured to process an excess of darkness in natural scenes
Charles P Ratliff
Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
Proc Natl Acad Sci U S A 107:17368-73. 2010
- The darkness at the end of the tunnel: summary and evaluation of an international symposium on light, endocrine systems and cancer
Department of Epidemiology CB 7435, University of North Carolina School of Public Health, Chapel Hill, NC 27599 7435, USA
Neuro Endocrinol Lett 23:71-8. 2002
..In the near future, both epidemiologic and laboratory research in this area are expected to grow appreciably in scope and scale...
- Sucrose-induced hypocotyl elongation of Arabidopsis seedlings in darkness depends on the presence of gibberellins
Key Laboratory of Arid and Grassland Agroecology Ministry of Education, School of Life Sciences, Lanzhou University, Lanzhou Gansu, People s Republic of China
J Plant Physiol 167:1130-6. 2010
..We conclude that sucrose can stimulate hypocotyl elongation of Arabidopsis seedlings in the dark in a GA-dependent manner...
- Experiments on mixotrophic protists and catastrophic darkness
School of Biological Sciences, University of East Anglia, Norwich, NR4 7TJ UK
Astrobiology 9:563-71. 2009
..Previous studies on the response of phototrophs to sudden prolonged darkness have focused on the survival of axenic strains...
- Of rodents and ungulates and melatonin: creating a uniform code for darkness by different signaling mechanisms
J H Stehle
Dr Senckenbergische Anatomie, Anatomisches Institut II, Johann Wolfgang Goethe Universitat Frankfurt, Germany
J Biol Rhythms 16:312-25. 2001
- Patterns of expression and normalized levels of the five Arabidopsis phytochromes
Robert A Sharrock
Department of Plant Sciences and Plant Pathology, 119 ABS Building, Montana State University, Bozeman, Montana 59717 3140, USA
Plant Physiol 130:442-56. 2002
..These studies indicate that, with the exception of phytochrome A, the family of phytochrome photoreceptors in Arabidopsis constitutes a quite stable and very broadly distributed array of sensory molecules...
- Morning and evening peaks of activity rely on different clock neurons of the Drosophila brain
Institut de Neurobiologie Alfred Fessard NGI, CNRS UPR 2216, Centre National de la Recherche Scientifique, av de la Terrasse, 91198 Gif sur Yvette, France
Nature 431:869-73. 2004
..Furthermore, we show that the LN(v)s alone can generate 24 h activity rhythms in constant darkness, indicating that the morning oscillator is sufficient to drive the circadian system.
- The autophagy-associated Atg8 gene family operates both under favourable growth conditions and under starvation stresses in Arabidopsis plants
Department of Plant Sciences, The Weizmann Institute of Science, Rehovot 76100, Israel
J Exp Bot 56:2839-49. 2005
..analysed in young Arabidopsis plants grown under favourable growth conditions or following exposure to prolonged darkness or sugar starvation...
- The mitochondrial electron transfer flavoprotein complex is essential for survival of Arabidopsis in extended darkness
Department of Plant Sciences, University of Oxford, South Parks Road, Oxford, UK
Plant J 47:751-60. 2006
..mutants of the ETFbeta gene revealed accelerated senescence and early death compared to wild-type during extended darkness. Furthermore in contrast to wild-type, the etfb mutants demonstrated a significant accumulation of several amino ..
- DELLA protein function in growth responses to canopy signals
Plant Ecophysiology, Institute of Environmental Biology, Utrecht University, Sorbonnelaan 16, 3584 CA, Utrecht, The Netherlands
Plant J 51:117-26. 2007
..These data provide novel information on the regulation of shade-avoidance under ecologically important conditions, defining the importance of DELLA proteins and GA and unravelling the existence of GA- and DELLA-independent mechanisms...
- Distinct roles of GIGANTEA in promoting flowering and regulating circadian rhythms in Arabidopsis
Institute of Biological Sciences, University of Tsukuba, Tsukuba, Ibaraki 305 8572, Japan
Plant Cell 17:2255-70. 2005
..that do not control flowering are altered in 35S:GI and gi mutant plants under continuous light and continuous darkness, and the phase of expression of these genes is changed under diurnal cycles...
- Light-dependent sequestration of TIMELESS by CRYPTOCHROME
M F Ceriani
Department of Cell Biology and NSF Center for Biological Timing, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
Science 285:553-6. 1999
..clocks consisting of negative feedback loops of gene regulation that facilitate adaptation to cycles of light and darkness. In this study, CRYPTOCHROME (CRY), a protein involved in circadian photoperception in Drosophila, is shown to ..
- The critical role of Arabidopsis electron-transfer flavoprotein:ubiquinone oxidoreductase during dark-induced starvation
Department of Plant Sciences, University of Oxford, Oxford OX1 3RB, United Kingdom
Plant Cell 17:2587-600. 2005
..insertional mutants of Arabidopsis ETFQO revealed a dramatic reduction in their ability to withstand extended darkness, resulting in senescence and death within 10 d after transfer, whereas wild-type plants remained viable for at ..
- Elongated mesocotyl1, a phytochrome-deficient mutant of maize
Ruairidh J H Sawers
Boyce Thompson Institute, Cornell University, Tower Road, Ithaca, New York 14853, USA
Plant Physiol 130:155-63. 2002
..Thus, the elm1 mutant of maize provides the first direct evidence for phytochrome-mediated modulation of flowering time in this agronomically important species...
- Impact of light on Hypocrea jecorina and the multiple cellular roles of ENVOY in this process
Division of Gene Technology and Applied Biochemistry, Institute for Chemical Engineering, Vienna University of Technology, Getreidemarkt 9 1665, A 1060 Wien, Austria
BMC Genomics 8:449. 2007
..Based on these data, we analyzed whether these genes are influenced by ENVOY and if overexpression of ENVOY in darkness would be sufficient to execute its function.
- Daily rhythms of food-anticipatory behavioral activity do not require the known circadian clock
Kai Florian Storch
Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
Proc Natl Acad Sci U S A 106:6808-13. 2009
..known circadian clock function in all tissues exhibit normal FAA both in a light-dark cycle and in constant darkness, regardless of whether the mutation disables the positive or negative limb of the clock feedback mechanism...