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Breitler, J.-C.; Djerrab, D.; Leran, S.; Toniutti, L.; Guittin, C.; Severac, D.; Pratlong, M.; Dereeper, A.; Etienne, H.; Bertrand, B. |
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Title |
Full moonlight-induced circadian clock entrainment in Coffea arabica |
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Journal Article |
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Year |
2020 |
Publication |
BMC Plant Biology |
Abbreviated Journal |
BMC Plant Biol |
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Volume |
20 |
Issue |
1 |
Pages |
24 |
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Keywords |
Moonlight; Plants |
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Abstract |
BACKGROUND: It is now well documented that moonlight affects the life cycle of invertebrates, birds, reptiles, and mammals. The lunisolar tide is also well-known to alter plant growth and development. However, although plants are known to be very photosensitive, few studies have been undertaken to explore the effect of moonlight on plant physiology. RESULTS: Here for the first time we report a massive transcriptional modification in Coffea arabica genes under full moonlight conditions, particularly at full moon zenith and 3 h later. Among the 3387 deregulated genes found in our study, the main core clock genes were affected. CONCLUSIONS: Moonlight also negatively influenced many genes involved in photosynthesis, chlorophyll biosynthesis and chloroplast machinery at the end of the night, suggesting that the full moon has a negative effect on primary photosynthetic machinery at dawn. Moreover, full moonlight promotes the transcription of major rhythmic redox genes and many heat shock proteins, suggesting that moonlight is perceived as stress. We confirmed this huge impact of weak light (less than 6 lx) on the transcription of circadian clock genes in controlled conditions mimicking full moonlight. |
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UMR IPME, Univ. Montpellier, CIRAD, IRD, F-34394, Montpellier, France |
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1471-2229 |
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PMID:31941456 |
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GFZ @ kyba @ |
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2817 |
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Author |
Haag, C.R.; Riek, M.; Hottinger, J.W.; Pajunen, V.I.; Ebert, D. |
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Title |
Genetic diversity and genetic differentiation in Daphnia metapopulations with subpopulations of known age |
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Journal Article |
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Year |
2005 |
Publication |
Genetics |
Abbreviated Journal |
Genetics |
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Volume |
170 |
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4 |
Pages |
1809-1820 |
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Keywords |
Plants; Aging; Animals; Daphnia/*genetics/*physiology; *Genetic Variation; *Genetics, Population |
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Abstract |
If colonization of empty habitat patches causes genetic bottlenecks, freshly founded, young populations should be genetically less diverse than older ones that may have experienced successive rounds of immigration. This can be studied in metapopulations with subpopulations of known age. We studied allozyme variation in metapopulations of two species of water fleas (Daphnia) in the skerry archipelago of southern Finland. These populations have been monitored since 1982. Screening 49 populations of D. longispina and 77 populations of D. magna, separated by distances of 1.5-2180 m, we found that local genetic diversity increased with population age whereas pairwise differentiation among pools decreased with population age. These patterns persisted even after controlling for several potentially confounding ecological variables, indicating that extinction and recolonization dynamics decrease local genetic diversity and increase genetic differentiation in these metapopulations by causing genetic bottlenecks during colonization. We suggest that the effect of these bottlenecks may be twofold, namely decreasing genetic diversity by random sampling and leading to population-wide inbreeding. Subsequent immigration then may not only introduce new genetic material, but also lead to the production of noninbred hybrids, selection for which may cause immigrant alleles to increase in frequency, thus leading to increased genetic diversity in older populations. |
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Unite d'Ecologie et d'Evolution, Departement de Biologie, Universite de Fribourg, CH-1700 Fribourg, Switzerland. christoph.haag@ed.ac.uk |
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0016-6731 |
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PMID:15937138; PMCID:PMC1449778 |
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LoNNe @ kagoburian @ |
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660 |
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Pattison, P.M.; Tsao, J.Y.; Brainard, G.C.; Bugbee, B. |
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Title |
LEDs for photons, physiology and food |
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Journal Article |
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Year |
2018 |
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Nature |
Abbreviated Journal |
Nature |
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563 |
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7732 |
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493-500 |
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Lighting; Human Health; Plants; Review |
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Lighting based on light-emitting diodes (LEDs) not only is more energy efficient than traditional lighting, but also enables improved performance and control. The colour, intensity and distribution of light can now be controlled with unprecedented precision, enabling light to be used both as a signal for specific physiological responses in humans and plants, and as an efficient fuel for fresh food production. Here we show how a broad and improved understanding of the physiological responses to light will facilitate greater energy savings and provide health and productivity benefits that have not previously been associated with lighting. |
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Utah State University, Logan, UT, USA |
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0028-0836 |
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PMID:30464269 |
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GFZ @ kyba @ |
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2110 |
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