Coping with spring frost-effects on polyamine metabolism of Scots pine seedlings
Riina Muilu-Mäkelä (1-2) , Jaana Vuosku (2), Markku Saarinen (1), Leena Hamberg (3), Seppo Ruotsalainen (4), Hely Häggman (2), Tytti Sarjala (1)
iForest - Biogeosciences and Forestry, Volume 10, Issue 1, Pages 227-236 (2017)
doi: https://doi.org/10.3832/ifor2003-009
Published: Jan 27, 2017 - Copyright © 2017 SISEF
Research Articles
Abstract
Polyamines (PA) are ubiquitous polycations known to be involved in several phases of plant development as well as in tolerance to abiotic stresses. Phenols are complex secondary metabolites produced via the phenylpropanoid pathway that contain, e.g., cell wall compounds and antioxidants. Phenols are known to enhance chilling tolerance of plants. PA and phenolic pathways are connected via conjugation. In boreal coniferous forests spring frost has been considered to have severe effects on the survival of tree seedlings. Such effects are likely to increase in the future. The present study focuses on the role of PA and phenylpropanoid syntheses in the coping strategies of Scots pine exposed to cold temperatures during the vulnerable early seedling phase in late spring and early summer. We found that spring frost affects the expression of genes regulating PA metabolism and phenylpropanoid synthesis differently in above and below ground parts of the seedlings, whereas PA or phenol contents in tissues were not affected. The results suggest that Scots pine seedlings may not have time to develop metabolite level responses during a short period of freezing stress and, therefore, the originally different PA levels, especially in roots, may influence the tolerance of Scots pine seedlings to spring frost.
Keywords
Authors’ Info
Authors’ address
Markku Saarinen
Tytti Sarjala
Natural Resources Institute Finland (Luke), Parkano Research Unit, FI-39700 Parkano (Finland)
Jaana Vuosku
Hely Häggman
Genetics and Physiology department, University of Oulu, P.O. Box 3000, FI-90014 Oulu (Finland)
Natural Resources Institute Finland (Luke), Vantaa Research Unit, FI- 01370, Vantaa (Finland)
Natural Resources Institute Finland (Luke), Punkaharju Research Unit, FI-58450, Punkaharju (Finland)
Corresponding author
Paper Info
Citation
Muilu-Mäkelä R, Vuosku J, Saarinen M, Hamberg L, Ruotsalainen S, Häggman H, Sarjala T (2017). Coping with spring frost-effects on polyamine metabolism of Scots pine seedlings. iForest 10: 227-236. - doi: 10.3832/ifor2003-009
Academic Editor
Mike Perks
Paper history
Received: Feb 05, 2016
Accepted: Nov 27, 2016
First online: Jan 27, 2017
Publication Date: Feb 28, 2017
Publication Time: 2.03 months
Copyright Information
© SISEF - The Italian Society of Silviculture and Forest Ecology 2017
Open Access
This article is distributed under the terms of the Creative Commons Attribution-Non Commercial 4.0 International (https://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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