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UV-B Exposure of Indoor-Grown Picea abies Seedlings Causes an Epigenetic Effect and Selective Emission of Terpenes
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- Ohlsson, Anna B. (author)
- KTH,Skolan för bioteknologi (BIO),Biokemi,AlbaNova Univ Ctr, Dept Biochem, Royal Inst Technol, KTH,Sch Biotechnol, SE-10691 Stockholm, Sweden
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- Segerfeldt, Patrik (author)
- KTH,Skolan för bioteknologi (BIO),Kemi,Biokemi,Royal Inst Technol, KTH, Sch Chem Sci & Engn, Dept Chem, Ecol Chem Grp, SE-10044 Stockholm, Sweden
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- Lindström, Anders (author)
- Högskolan Dalarna,Skog- och träteknik
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- 2014-06-02
- 2013
- English.
- In: Zeitschrift für Naturforschung C - A Journal of Biosciences. - Tübingen : Verlag der Zeitschrift für Naturforschung. - 0939-5075 .- 1865-7125. ; 68:3-4, s. 139-147
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Terpenoids are involved in various defensive functions in plants, especially conifers. Epigenetic mechanisms, for example DNA methylation, can influence plant defence systems. The purpose of the present study was to investigate the influence of UV-B exposure on the release of terpenoids from spruce seedlings and on needle DNA methylation. Ten-week-old seedlings grown indoors were exposed to UV-B radiation during 4 h, and the volatile compounds emitted from the seedlings were analysed. Analysis of the volatiles 1, 3, and 22 d after this UV-B exposure showed that bornyl acetate, borneol, myrcene, and limonene contents increased during the first 3 days, while at day 22 the level of emission had returned to the control level. UV-B exposure decreased the level of DNA methylation in needles of young seedlings, reflected in methylation changes in CCGG sequences. Exposure of young seedlings to UV-B radiation might be a way to potentiate the general defensive capacity, improving their ability to survive in outdoor conditions. UV-B-induced defence is discussed in the light of epigenetic mechanisms.
Subject headings
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Skogsvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Forest Science (hsv//eng)
- NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Farmakologi och toxikologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Pharmacology and Toxicology (hsv//eng)
Keyword
- Ultraviolet radiation
- spruce
- plant defense
- DNA methylation
- volatiles
- terpenes
- Energy and Built Environments
Publication and Content Type
- ref (subject category)
- art (subject category)
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