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Onset of photosynthesis in spring speeds up monoterpene synthesis and leads to emission bursts
Emissions of biogenic volatile organic compounds (BVOC) by boreal evergreen trees have strong seasonality, with low emission rates during photosynthetically inactive winter and increasing rates towards summer. Yet, the regulation of this seasonality remains unclear. We measured in situ monoterpene e...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5324583/ https://www.ncbi.nlm.nih.gov/pubmed/25850935 http://dx.doi.org/10.1111/pce.12550 |
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author | Aalto, J. Porcar‐Castell, A. Atherton, J. Kolari, P. Pohja, T. Hari, P. Nikinmaa, E. PetÄJÄ, T. Bäck, J. |
author_facet | Aalto, J. Porcar‐Castell, A. Atherton, J. Kolari, P. Pohja, T. Hari, P. Nikinmaa, E. PetÄJÄ, T. Bäck, J. |
author_sort | Aalto, J. |
collection | PubMed |
description | Emissions of biogenic volatile organic compounds (BVOC) by boreal evergreen trees have strong seasonality, with low emission rates during photosynthetically inactive winter and increasing rates towards summer. Yet, the regulation of this seasonality remains unclear. We measured in situ monoterpene emissions from Scots pine shoots during several spring periods and analysed their dynamics in connection with the spring recovery of photosynthesis. We found high emission peaks caused by enhanced monoterpene synthesis consistently during every spring period (monoterpene emission bursts, MEB). The timing of the MEBs varied relatively little between the spring periods. The timing of the MEBs showed good agreement with the photosynthetic spring recovery, which was studied with simultaneous measurements of chlorophyll fluorescence, CO (2) exchange and a simple, temperature history‐based proxy for state of photosynthetic acclimation, S. We conclude that the MEBs were related to the early stages of photosynthetic recovery, when the efficiency of photosynthetic carbon reactions is still low whereas the light harvesting machinery actively absorbs light energy. This suggests that the MEBs may serve a protective functional role for the foliage during this critical transitory state and that these high emission peaks may contribute to atmospheric chemistry in the boreal forest in springtime. |
format | Online Article Text |
id | pubmed-5324583 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-53245832017-03-08 Onset of photosynthesis in spring speeds up monoterpene synthesis and leads to emission bursts Aalto, J. Porcar‐Castell, A. Atherton, J. Kolari, P. Pohja, T. Hari, P. Nikinmaa, E. PetÄJÄ, T. Bäck, J. Plant Cell Environ Original Articles Emissions of biogenic volatile organic compounds (BVOC) by boreal evergreen trees have strong seasonality, with low emission rates during photosynthetically inactive winter and increasing rates towards summer. Yet, the regulation of this seasonality remains unclear. We measured in situ monoterpene emissions from Scots pine shoots during several spring periods and analysed their dynamics in connection with the spring recovery of photosynthesis. We found high emission peaks caused by enhanced monoterpene synthesis consistently during every spring period (monoterpene emission bursts, MEB). The timing of the MEBs varied relatively little between the spring periods. The timing of the MEBs showed good agreement with the photosynthetic spring recovery, which was studied with simultaneous measurements of chlorophyll fluorescence, CO (2) exchange and a simple, temperature history‐based proxy for state of photosynthetic acclimation, S. We conclude that the MEBs were related to the early stages of photosynthetic recovery, when the efficiency of photosynthetic carbon reactions is still low whereas the light harvesting machinery actively absorbs light energy. This suggests that the MEBs may serve a protective functional role for the foliage during this critical transitory state and that these high emission peaks may contribute to atmospheric chemistry in the boreal forest in springtime. John Wiley and Sons Inc. 2015-06-11 2015-11 /pmc/articles/PMC5324583/ /pubmed/25850935 http://dx.doi.org/10.1111/pce.12550 Text en © 2015 The Authors. Plant, Cell & Environment published by John Wiley & Sons Ltd This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs (http://creativecommons.org/licenses/by-nc-nd/4.0/) License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made. |
spellingShingle | Original Articles Aalto, J. Porcar‐Castell, A. Atherton, J. Kolari, P. Pohja, T. Hari, P. Nikinmaa, E. PetÄJÄ, T. Bäck, J. Onset of photosynthesis in spring speeds up monoterpene synthesis and leads to emission bursts |
title | Onset of photosynthesis in spring speeds up monoterpene synthesis and leads to emission bursts |
title_full | Onset of photosynthesis in spring speeds up monoterpene synthesis and leads to emission bursts |
title_fullStr | Onset of photosynthesis in spring speeds up monoterpene synthesis and leads to emission bursts |
title_full_unstemmed | Onset of photosynthesis in spring speeds up monoterpene synthesis and leads to emission bursts |
title_short | Onset of photosynthesis in spring speeds up monoterpene synthesis and leads to emission bursts |
title_sort | onset of photosynthesis in spring speeds up monoterpene synthesis and leads to emission bursts |
topic | Original Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5324583/ https://www.ncbi.nlm.nih.gov/pubmed/25850935 http://dx.doi.org/10.1111/pce.12550 |
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