| Records |
| Author |
Chaves, I.; Pokorny, R.; Byrdin, M.; Hoang, N.; Ritz, T.; Brettel, K.; Essen, L.-O.; van der Horst, G.T.J.; Batschauer, A.; Ahmad, M. |
| Title |
The cryptochromes: blue light photoreceptors in plants and animals |
Type |
Journal Article |
| Year |
2011 |
Publication |
Annual Review of Plant Biology |
Abbreviated Journal |
Annu Rev Plant Biol |
| Volume |
62 |
Issue |
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Pages |
335-364 |
Keywords  |
Adenosine Triphosphate/metabolism; Animals; Cryptochromes/chemistry/classification/*physiology; DNA Repair; Deoxyribodipyrimidine Photo-Lyase/chemistry/classification/physiology; Homing Behavior; Insects/physiology; *Light Signal Transduction; Magnetics; Mice; Oxidation-Reduction; Phosphorylation/physiology; Plants/*metabolism; blue light |
| Abstract |
Cryptochromes are flavoprotein photoreceptors first identified in Arabidopsis thaliana, where they play key roles in growth and development. Subsequently identified in prokaryotes, archaea, and many eukaryotes, cryptochromes function in the animal circadian clock and are proposed as magnetoreceptors in migratory birds. Cryptochromes are closely structurally related to photolyases, evolutionarily ancient flavoproteins that catalyze light-dependent DNA repair. Here, we review the structural, photochemical, and molecular properties of cry-DASH, plant, and animal cryptochromes in relation to biological signaling mechanisms and uncover common features that may contribute to better understanding the function of cryptochromes in diverse systems including in man. |
| Address |
Department of Genetics, Erasmus University Medical Center, 3000 CA Rotterdam, The Netherlands. i.chaves@erasmusmc.nl |
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English |
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1543-5008 |
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| Notes |
PMID:21526969 |
Approved |
no |
| Call Number |
IDA @ john @ |
Serial |
341 |
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| Author |
Grenis, K.; Murphy, S.M. |
| Title |
Direct and indirect effects of light pollution on the performance of an herbivorous insect |
Type |
Journal Article |
| Year |
2018 |
Publication |
Insect Science |
Abbreviated Journal |
Insect Sci |
| Volume |
26 |
Issue |
4 |
Pages |
770-776 |
| Keywords |
Animals; Plants |
| Abstract |
Light pollution is a global disturbance with resounding impacts on a wide variety of organisms, but our understanding of these impacts is restricted to relatively few higher vertebrate species. We tested the direct effects of light pollution on herbivore performance as well as indirect effects mediated by host plant quality. We found that artificial light from streetlights alters plant toughness. Additionally, we found evidence of both direct and indirect effects of light pollution on the performance of an herbivorous insect, which indicates that streetlights can have cascading impacts on multiple trophic levels. Our novel findings suggest that light pollution can alter plant-insect interactions and thus may have important community-wide consequences. |
| Address |
Department of Biological Sciences, University of Denver, Denver, Colorado, USA |
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English |
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1672-9609 |
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PMID:29425403 |
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no |
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GFZ @ kyba @ |
Serial |
1865 |
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| Author |
Radetsky L.; Patel J. S.; Rea M. S. |
| Title |
Continuous and Intermittent Light at Night, Using Red and Blue LEDs to Suppress Basil Downy Mildew Sporulation |
Type |
Journal Article |
| Year |
2020 |
Publication |
HortScience |
Abbreviated Journal |
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| Volume |
55 |
Issue |
4 |
Pages |
483-486 |
| Keywords |
Animals; Plants |
| Abstract |
Lighting from red and blue light-emitting diodes (LEDs) is common for crop production in controlled environments. Continuous application of red or blue light at night has been shown to suppress sporulation by Peronospora belbahrii, the causal organism of basil downy mildew (DM), but the suppressing effects of intermittent applications of red and blue LEDs have not been thoroughly researched. This study examined the effects of red (λmax = 670 nm) and blue (λmax = 458 nm) LED top lighting, at two photosynthetic photon flux densities (PPFD = ≈12 and ≈60 µmol·m−2·s−1), using continuous (10-hour) nighttime and two intermittent nighttime exposures, to suppress basil DM sporulation. The two intermittent treatments consisted of one 4-hour exposure and three 1.3-hour exposures spaced 3 hours apart. Continuous nighttime treatments with blue or red LED top lighting at ≈60 µmol·m−2·s−1 were able to suppress basil DM sporulation by more than 99%. At a given nighttime dose of light that did not completely suppress sporulation, continuous lighting was more effective than intermittent lighting, and for these partially suppressing doses, red LEDs were not significantly different from blue LEDs for suppressing sporulation. The present study showed that horticultural lighting systems using red and blue LEDs to grow crops during the day can also be used at night to suppress basil DM sporulation by up to 100%. |
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UP @ altintas1 @ |
Serial |
3143 |
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| Author |
Margot, J.-L. |
| Title |
Insufficient Evidence of Purported Lunar Effect on Pollination in Ephedra |
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Journal Article |
| Year |
2015 |
Publication |
Journal of Biological Rhythms |
Abbreviated Journal |
J Biol Rhythms |
| Volume |
30 |
Issue |
5 |
Pages |
454-456 |
| Keywords |
Animals; Plants; Moonlight |
| Abstract |
It has been suggested that the timing of pollination in Ephedra foeminea coincides with the full moon in July. The implication is that the plant can detect the full moon through light or gravity and that this trait is an evolutionary adaptation that aids the navigation by pollinating insects. Here we show that there are insufficient data to make such a claim, and we predict that pollinations of E. foeminea do not in general coincide with the full moon. |
| Address |
Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, California, USADepartment of Physics and Astronomy, University of California, Los Angeles, California, USA jlm@astro.ucla.edu |
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English |
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0748-7304 |
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PMID:26316347 |
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no |
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LoNNe @ kyba @ |
Serial |
1557 |
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Gaston, K.J.; Davies, T.W.; Nedelec, S.L.; Holt, L.A. |
| Title |
Impacts of Artificial Light at Night on Biological Timings |
Type |
Journal Article |
| Year |
2017 |
Publication |
Annual Review of Ecology, Evolution, and Systematics |
Abbreviated Journal |
Annu. Rev. Ecol. Evol. Syst. |
| Volume |
48 |
Issue |
1 |
Pages |
49-68 |
| Keywords |
Animals; Plants; Review |
| Abstract |
The use of artificial lighting to illuminate the night has provided substantial benefits to humankind. It has also disrupted natural daily, seasonal, and lunar light cycles as experienced by a diversity of organisms, and hence it has also altered cues for the timings of many biological activities. Here we review the evidence for impacts of artificial nighttime lighting on these timings. Although the examples are scattered, concerning a wide variety of species and environments, the breadth of such impacts is compelling. Indeed, it seems reasonable to conclude that the vast majority of impacts of artificial nighttime lighting stem from effects on biological timings. This adds support to arguments that artificial nighttime lighting has a quite pervasive and marked impact on ecological systems, that the rapid expansion in the global extent of both direct illuminance and skyglow is thus of significant concern, and that a widespread implementation of mitigation measures is required. |
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1543-592X |
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no |
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GFZ @ kyba @ |
Serial |
2449 |
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