| Records |
Author  |
Breitler, J.-C.; Djerrab, D.; Leran, S.; Toniutti, L.; Guittin, C.; Severac, D.; Pratlong, M.; Dereeper, A.; Etienne, H.; Bertrand, B. |
| Title |
Full moonlight-induced circadian clock entrainment in Coffea arabica |
Type |
Journal Article |
| Year |
2020 |
Publication |
BMC Plant Biology |
Abbreviated Journal |
BMC Plant Biol |
| Volume |
20 |
Issue |
1 |
Pages |
24 |
| Keywords |
Moonlight; Plants |
| 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. |
| Address |
UMR IPME, Univ. Montpellier, CIRAD, IRD, F-34394, Montpellier, France |
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English |
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1471-2229 |
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PMID:31941456 |
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no |
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GFZ @ kyba @ |
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2817 |
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| Author |
Brelsford, CC; Robson, TM |
| Title |
Blue light advances bud burst in branches of three deciduous tree species under short-day conditions |
Type |
Journal Article |
| Year |
2018 |
Publication |
Trees |
Abbreviated Journal |
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| Volume |
32 |
Issue |
4 |
Pages |
1157-1164 |
| Keywords |
Plants |
| Abstract |
During spring, utilising multiple cues allow tree species from temperate and boreal regions to coordinate their bud burst and leaf out, at the right moment to capitalise on favourable conditions for photosynthesis. Whilst the effect of blue light (400–500 nm) has been shown to increase percentage bud burst of axillary shoots of Rosa sp., the effects of blue light on spring-time bud burst of deciduous tree species have not previously been reported. We tested the hypotheses that blue light would advance spring bud burst in tree species, and that late-successional species would respond more than early-successional species, whose bud burst is primarily determined by temperature. The bud development of Alnus glutinosa, Betula pendula, and Quercus robur branches, cut from dormant trees, was monitored under two light treatments of equal photosynthetically active radiation (PAR, 400–700 nm) and temperature, either with or without blue light, under controlled environmental conditions. In the presence of blue light, the mean time required to reach 50% bud burst was reduced by 3.3 days in Betula pendula, 6 days in Alnus glutinosa, and 6.3 days in Quercus robur. This result highlights the potential of the blue region of the solar spectrum to be used as an extra cue that could help plants to regulate their spring phenology, alongside photoperiod and temperature. Understanding how plants combine photoreceptor-mediated cues with other environmental cues such as temperature to control phenology is essential if we are to accurately predict how tree species might respond to climate change. |
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GFZ @ kyba @ |
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1847 |
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| Author |
Briggs, R. C. |
| Title |
Why does aid not target the poorest? |
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Journal Article |
| Year |
2019 |
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AIDDATA |
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Remote Sensing |
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Foreign aid projects typically have local effects, so if they are to reduce poverty then they need to be placed close to the poor. I show that, conditional on local population, World Bank (WB) project aid targets richer parts of countries. This relationship holds over time and across world regions. I test five explanations for pro-rich targeting using a pre-registered conjoint experiment on WB task team leaders (TTLs). TTLs perceive aid-receiving governments as most interested in targeting aid politically and controlling implementation. They also believe that aid works better in poorer or more remote areas, but that implementation in these areas is uniquely difficult. These results speak to debates in distributive politics, international bargaining over aid, and principal-agent issues in international organizations. The results also suggest that tweaks to WB incentive structures to make ease of project implementation less important may encourage aid to flow to poorer parts of countries. |
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IDA @ intern @ |
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2719 |
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| Author |
Browman, L.G. |
| Title |
Light in its relation to activity and estrous rhythms in the albino rat |
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Journal Article |
| Year |
1937 |
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Journal of Experimental Zoology |
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J. Exp. Zool. |
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75 |
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3 |
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375-388 |
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Animals |
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0022-104X |
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GFZ @ kyba @ |
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2390 |
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| Author |
Brown, J., Frank A. |
| Title |
Light and Molt in Weaver Finches |
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Journal Article |
| Year |
1940 |
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The Auk |
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The Auk |
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57 |
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4 |
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485-498 |
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Animals |
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0004-8038 |
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no |
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GFZ @ kyba @ |
Serial |
2366 |
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