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UV-B exposure of indoor-grown Picea abies seedlings causes an epigenetic effect and selective emission of terpenes
AlbaNova Univ Ctr, Dept Biochem, Royal Inst Technol, KTH,Sch Biotechnol, SE-10691 Stockholm, Sweden.
Royal Inst Technol, KTH, Sch Chem Sci & Engn, Dept Chem, Ecol Chem Grp, SE-10044 Stockholm, Sweden.
Dalarna University, School of Technology and Business Studies, Forest and Wood Technology.
Royal Inst Technol, KTH, Sch Chem Sci & Engn, Dept Chem,Ecol Chem Grp, SE-10044 Stockholm, Sweden ; Univ Tartu, Inst Technol, EE-50090 Tartu, Estonia.
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2013 (English)In: Zeitschrift für Naturforschung C - A Journal of Biosciences, ISSN 0939-5075, Vol. 68, no 3-4, 139-147 p.Article in journal (Refereed) Published
Abstract [en]

Abstract: 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.

Place, publisher, year, edition, pages
2013. Vol. 68, no 3-4, 139-147 p.
Keyword [en]
Defence; DNA Methylation; Volatiles
National Category
Biochemistry and Molecular Biology Pharmacology and Toxicology
Research subject
Energi, skog och byggd miljö
Identifiers
URN: urn:nbn:se:du-13058ISI: 000322090700010OAI: oai:DiVA.org:du-13058DiVA: diva2:651595
Funder
Knowledge Foundation, 46817630
Available from: 2013-09-26 Created: 2013-09-26 Last updated: 2015-06-29Bibliographically approved

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CiteExportLink to record
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