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Supplementary UV-A ...
Supplementary UV-A and UV-B radiation differentially regulate morphology in Ocimum basilicum
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- Qian, Minjie (author)
- Örebro Life Science Center, School of Science and Technology, Örebro University, Örebro, Sweden; School of Horticulture, Hainan University, Haikou, China,Biokemi
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- Kalbina, Irina, 1961- (author)
- Örebro universitet,Institutionen för naturvetenskap och teknik,Örebro Life Science Center,Biokemi
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- Rosenqvist, Eva, 1960- (author)
- Section of Crop Sciences, Department of Plant and Environmental Sciences, University of Copenhagen, Taastrup, Denmark
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- Jansen, Marcel A. K., 1962- (author)
- School of Biological, Earth and Environmental Sciences, Environmental Research Institute, University College Cork, North Mall, Cork, Ireland
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- Strid, Åke, Professor, 1960- (author)
- Örebro universitet,Institutionen för naturvetenskap och teknik,Örebro Life Science Center,Biokemi
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(creator_code:org_t)
- Springer, 2023
- 2023
- English.
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In: Photochemical and Photobiological Sciences. - : Springer. - 1474-905X .- 1474-9092. ; 22:9, s. 2219-2230
- Related links:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- UV-A- or UV-B-enriched growth light were given to basil plants at non-stress-inducing intensities. UV-A-enriched growth light gave rise to a sharp rise in expression of PAL and CHS genes in leaves, an effect that rapidly declined after 1-2 days of exposure. On the other hand, leaves of plants grown in UV-B-enriched light had a more stable and long-lasting increase in expression of these genes and also showed a stronger increase in leaf epidermal flavonol content. UV supplementation of growth light also led to shorter more compact plants with a stronger UV effect the younger the tissue. The effect was more prominent in plants grown under UV-B-enriched light than in those grown under UV-A. Parameters particularly affected were internode lengths, petiole lengths and stem stiffness. In fact, the bending angle of the 2nd internode was found to increase as much as 67% and 162% for plants grown in the UV-A- and UV-B-enriched treatments, respectively. The decreased stem stiffness was probably caused by both an observed smaller internode diameter and a lower specific stem weight, as well as a possible decline in lignin biosynthesis due to competition for precursor by the increased flavonoid biosynthesis. Overall, at the intensities used, UV-B wavelengths are stronger regulators of morphology, gene expression and flavonoid biosynthesis than UV-A wavelengths.
Subject headings
- NATURVETENSKAP -- Biologi -- Botanik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Botany (hsv//eng)
- LANTBRUKSVETENSKAPER -- Bioteknologi med applikationer på växter och djur -- Växtbioteknologi (hsv//swe)
- AGRICULTURAL SCIENCES -- Agricultural Biotechnology -- Plant Biotechnology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
Keyword
- Flavonols
- Gene Expression
- Morphology
- UV-B
- UV-A
- Biochemistry
- Biokemi
Publication and Content Type
- ref (subject category)
- art (subject category)
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