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Author Karling, J.S.
Title A Preliminary Account of the Influence of Light and Temperature on Growth and Reproduction in Chara fragilis Type Journal Article
Year 1924 Publication (up) Bulletin of the Torrey Botanical Club Abbreviated Journal Bulletin of the Torrey Botanical Club
Volume 51 Issue 12 Pages 469
Keywords Plants
Abstract
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Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0040-9618 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 2404
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Author Apostol, K.; Dumroese, R.K.; Pinto, J.R.; Davis, A.S.
Title Response of conifer species from three latitudinal populations to light spectra generated by light-emitting diodes and high-pressure sodium lamps Type Journal Article
Year 2015 Publication (up) Canadian Journal of Forest Research Abbreviated Journal Can. J. For. Res.
Volume 45 Issue 12 Pages 1711-1719
Keywords plants
Abstract Light-emitting diode (LED) technology shows promise for supplementing photosynthetically active radiation (PAR) in forest nurseries because of the potential reduction in energy consumption and an ability to supply discrete wavelengths to optimize seedling growth. Our objective was to examine the effects of light spectra supplied by LED and traditional high-pressure sodium (HPS) lamps on growth and physiology of Pseudotsuga menziesii (Douglas-fir) and Picea engelmannii (Engelmann spruce) seedlings. We used three latitudinal sources for each species: British Columbia (BC), Idaho (ID), and New Mexico (NM). Container seedlings were grown for 17 weeks in the greenhouse under an 18-h photoperiod of ambient solar light supplemented with light delivered from HPS or LED. In general, seedlings grown under LED had significantly greater growth, gas exchange rates, and chlorophyll contents than those seedlings grown under HPS. The growth and physiological responses to supplemental lighting varied greatly among species and seed sources. Generally, LED-grown seedlings from BC had the greatest growth and tissue dry matter followed by ID and NM populations. Compared with HPS, the significant increase in seedling growth and concomitant energy savings with LED (29% energy consumption relative to HPS) demonstrates the promise of using LED as PAR supplemental lighting for container seedling production.
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0045-5067 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kyba @ Serial 1250
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Author Rumanova, V.S.; Okuliarova, M.; Molcan, L.; Sutovska, H.; Zeman, M.
Title Consequences of low-intensity light at night on cardiovascular and metabolic parameters in spontaneously hypertensive rats Type Journal Article
Year 2019 Publication (up) Canadian Journal of Physiology and Pharmacology Abbreviated Journal Can J Physiol Pharmacol
Volume 97 Issue 9 Pages 863-871
Keywords Animals; mouse models
Abstract Circadian rhythms are an inherent property of physiological processes and can be disturbed by irregular environmental cycles, including artificial light at night (ALAN). Circadian disruption may contribute to many pathologies, such as hypertension, obesity and type 2 diabetes, but the underlying mechanisms are not understood. Our study investigated the consequences of ALAN on cardiovascular and metabolic parameters in spontaneously hypertensive rats (SHR), which represent an animal model of essential hypertension and insulin resistance. Adult males were exposed to a light (L)/dark (D) cycle of 12:12 h and the ALAN group experienced dim light at night (1-2 lux), either for 2 or 5 weeks. Rats on ALAN showed a loss of LD variability for systolic blood pressure (SysBP), but not for heart rate. Moreover, a gradual increase of SysBP was recorded over 5 weeks of ALAN. Exposure to ALAN increased plasma insulin and hepatic triglyceride levels. An increased expression of metabolic transcription factors, Pparalpha and Ppar, in the epididymal fat and a decreased expression of Glut4 in the heart was found in the ALAN group. Our results demonstrate that low-intensity ALAN can disturb BP control and augment insulin resistance in SHR, and may represent a serious risk factor for cardiometabolic diseases.
Address Faculty of Natural Sciences, Comenius University, Animal Physiology and Ethology , Ilkovicova 6 , Slovakia , Bratislava, Slovakia, Slovakia , 84215 ; mzeman@fns.uniba.sk
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0008-4212 ISBN Medium
Area Expedition Conference
Notes PMID:31251886 Approved no
Call Number GFZ @ kyba @ Serial 2567
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Author Rumanova, V.S.; Okuliarova, M.; Molcan, L.; Sutovska, H.; Zeman, M.
Title Consequences of low-intensity light at night on cardiovascular and metabolic parameters in spontaneously hypertensive rats (1) Type Journal Article
Year 2019 Publication (up) Canadian Journal of Physiology and Pharmacology Abbreviated Journal Can J Physiol Pharmacol
Volume 97 Issue 9 Pages 863-871
Keywords Animals; Ppar; blood pressure; circadian; circadien; insulin resistance; metabolism; metabolisme; recepteurs actives par les proliferateurs de peroxysomes; resistance a l'insuline; tension arterielle
Abstract Circadian rhythms are an inherent property of physiological processes and can be disturbed by irregular environmental cycles, including artificial light at night (ALAN). Circadian disruption may contribute to many pathologies, such as hypertension, obesity, and type 2 diabetes, but the underlying mechanisms are not understood. Our study investigated the consequences of ALAN on cardiovascular and metabolic parameters in spontaneously hypertensive rats, which represent an animal model of essential hypertension and insulin resistance. Adult males were exposed to a 12 h light – 12 h dark cycle and the ALAN group experienced dim light at night (1-2 lx), either for 2 or 5 weeks. Rats on ALAN showed a loss of light-dark variability for systolic blood pressure, but not for heart rate. Moreover, a gradual increase of systolic blood pressure was recorded over 5 weeks of ALAN. Exposure to ALAN increased plasma insulin and hepatic triglyceride levels. An increased expression of metabolic transcription factors, Pparalpha and Ppargamma, in the epididymal fat and a decreased expression of Glut4 in the heart was found in the ALAN group. Our results demonstrate that low-intensity ALAN can disturb blood pressure control and augment insulin resistance in spontaneously hypertensive rats, and may represent a serious risk factor for cardiometabolic diseases.
Address Department of Animal Physiology and Ethology, Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0008-4212 ISBN Medium
Area Expedition Conference
Notes PMID:31251886 Approved no
Call Number GFZ @ kyba @ Serial 2811
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Author Patel, J.S.; Radetsky, L.; Rea, M.S.
Title The Value of Red Light at Night for Increasing Basil Yield Type Journal Article
Year 2018 Publication (up) Canadian Journal of Plant Science Abbreviated Journal Can. J. Plant Sci.
Volume 98 Issue 6 Pages 1321-1330
Keywords Plants
Abstract Sweet basil (<i>Ocimum basilicum L.</i>) is primarily used for culinary purposes, but it is also used in the fragrance and medicinal industries. In the last few years, global sweet basil production has been significantly impacted by downy mildew caused by <i>Peronospora belbahrii</i>. Nighttime exposure to red light has been shown to inhibit sporulation of <i>P. belbahrii</i>. The objective of this study was to determine if nighttime exposure to red light from light-emitting diodes (LEDs; λ<sub>max</sub> = 625 nm) could increase plant growth (plant height and leaf size) and yield (number and weight of leaves) in basil plants. In two sets of greenhouse experiments, red light was applied at a photosynthetic photon flux density (PPFD) of 60 µmol m<sup>-2</sup> s<sup>-1</sup> during the otherwise dark night for 10 hours (from 20:00 to 06:00). The results demonstrate that exposure to red light at night can increase the number of basil leaves per plant, plant height, leaf size (length and width), and leaf fresh and dry weight, compared to plants in darkness at night. The addition of incremental red light at night has the potential to be cost-effective for fresh organic basil production in controlled environments.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0008-4220 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 1955
Permanent link to this record