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Author |
Matsuda, R.; Yamano, T.; Murakami, K.; Fujiwara, K. |
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Title |
Effects of spectral distribution and photosynthetic photon flux density for overnight LED light irradiation on tomato seedling growth and leaf injury |
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Journal Article |
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Year |
2016 |
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Scientia Horticulturae |
Abbreviated Journal |
Scientia Horticulturae |
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Volume |
198 |
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363-369 |
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Plants |
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0304-4238 |
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LoNNe @ kyba @ |
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1387 |
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Author |
Shimomura, M.; Yoshida, H.; Fujiuchi, N.; Ariizumi, T.; Ezura, H.; Fukuda, N. |
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Title |
Continuous blue lighting and elevated carbon dioxide concentration rapidly increase chlorogenic acid content in young lettuce plants |
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Journal Article |
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Year |
2020 |
Publication |
Scientia Horticulturae |
Abbreviated Journal |
Scientia Horticulturae |
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Volume |
272 |
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109550 |
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Keywords |
Plants |
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Abstract |
Chlorogenic acid (CGA) is a strong antioxidant that potentially reduces oxidative damage in human cells. In this study, the effects of environmental factors such as photoperiod, light quality and intensity, and CO2 concentration on the growth and CGA content of lettuce (Lactuca sativa L.) were evaluated. CGA content in fresh lettuce increased under high light intensity treatments, doubling in concentration under 200 μmol m−2 s-1 compared to 100 μmol m−2 s-1. Elevated CO2 concentration also increased CGA content in fresh lettuce, quadrupling in concentration when grown at 1000 ppm compared to 400 ppm. Furthermore, there was a compound effect of light intensity and CO2 concentration whereby a light intensity level of 200 μmol m−2 s-1 and CO2 of 1000 ppm produced an even higher concentration of CGA, 199 mg per 100 g of fresh lettuce. Increased CGA concentration because of continuous lighting and elevated CO2 was observed under both fluorescent light and blue LED, but not under red LED treatment. Increased day length also induced higher CGA content in lettuce plants. These results show that continuous lighting, including blue spectrum and elevated CO2 concentration can cause higher CGA accumulation in lettuce plants. The observed increase in CGA content was induced only for 2 days after treatment was initiated. One possible interpretation of the data is that physiological stress caused by excess photosynthesis under continuous lighting results in higher CGA content to protect the plant body from high levels of reactive oxidative species. In addition, blue light and CO2 could be stimulus signals for inducing high CGA accumulation via metabolite changes. |
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0304-4238 |
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GFZ @ kyba @ |
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3090 |
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Macgregor, C.J.; Pocock, M.J.O.; Fox, R.; Evans, D.M. |
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Title |
Pollination by nocturnal Lepidoptera, and the effects of light pollution: a review: Moth pollination and light pollution |
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Journal Article |
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Year |
2014 |
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Ecological Entomology |
Abbreviated Journal |
Ecol Entomol |
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40 |
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3 |
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187–198 |
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Ecology; Agro-ecosystems; artificial night lighting; ecological networks; ecosystem services; flowering plants; food-webs; moths; population declines; plants; insects; pollination |
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1. Moths (Lepidoptera) are the major nocturnal pollinators of flowers. However, their importance and contribution to the provision of pollination ecosystem services may have been under-appreciated. Evidence was identified that moths are important pollinators of a diverse range of plant species in diverse ecosystems across the world.
2. Moth populations are known to be undergoing significant declines in several European countries. Among the potential drivers of this decline is increasing light pollution. The known and possible effects of artificial night lighting upon moths were reviewed, and suggest how artificial night lighting might in turn affect the provision of pollination by moths. The need for studies of the effects of artificial night lighting upon whole communities of moths was highlighted.
3. An ecological network approach is one valuable method to consider the effects of artificial night lighting upon the provision of pollination by moths, as it provides useful insights into ecosystem functioning and stability, and may help elucidate the indirect effects of artificial light upon communities of moths and the plants they pollinate.
4. It was concluded that nocturnal pollination is an ecosystem process that may potentially be disrupted by increasing light pollution, although the nature of this disruption remains to be tested. |
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School of Biological, Biomedical and Environmental Sciences, University of Hull, Hull, U.K. |
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Wiley |
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English |
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0307-6946 |
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LoNNe @ christopher.kyba @; IDA @ john @ |
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1084 |
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Author |
Jawaad Atif, M.; Amin, B.; Imran Ghani, M.; Ali, M.; Liu, X.; Zhang, Y.; Cheng, Z. |
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Title |
Allium sativum L. (Garlic) bulb enlargement as influenced by differential combinations of photoperiod and temperature |
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Journal Article |
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2020 |
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Food Chemistry |
Abbreviated Journal |
Food Chemistry |
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in press |
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127991 |
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Plants |
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Photoperiod and temperature are vital environmental factors that regulate plant developmental processes. However, the roles of these factors in garlic bulb enlargement are unclear. In this report, responses of garlic bulb morphology and physiology to combinations of photoperiod (light/dark: 10/14 h, 12/12 h, 14/10 h) and temperature (light/dark: 25/18°C, 30/20°C) were investigated. For garlic cultivar G103, bulb characteristics, phytohormones (IAA, ABA, ZT, tZR, JA), allicin and phenolic acids (p-coumaric and p-hydroxybenzoic) were highest under a photoperiod of 14 h at 30°C. Maximum GA was observed under 14 h+30°C for cv. G2011-5. Maximum caffeic, ferulic and vanillic acids were detected for cv. G2011-5 at 14 h+30°C, 12 h+25°C and 14 h+25°C, respectively. Flavonoids (myricetin, quercetin, kaempferol and apigenin) were not detected in this trial. This is the first report describing the impact of long periods of light duration and higher temperatures on garlic morphology, phytohormones, phenolic acids and allicin content. |
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0308-8146 |
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Call Number |
GFZ @ kyba @ |
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3137 |
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Author |
Siemens, C.W. |
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Title |
III. On the influence of electric light upon vegetation, and on certain physical principles involved |
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Year |
1880 |
Publication |
Proceedings of the Royal Society of London |
Abbreviated Journal |
Abstr. Pap. Printed Phil. Trans. R. Soc. Lond. |
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30 |
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200-205 |
Pages |
210-219 |
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0370-1662 |
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GFZ @ kyba @ |
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2376 |
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