Ecophysiological responses of subarctic scots pine to ultraviolet (UV) radiation
The focus of our field studies in the subartic of Finnish Lapland from 1997 onwards has been to investigate the effect of solar UV radiation on the ecophysiology of Scots pine. Our studies have indicated that solar UV-B BE exclusion during 1997-2002 caused transient effects on the growth of both Sco...
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ftulaplandcdispu:oai:lacris.ulapland.fi:publications/12a72599-96b4-4067-b3d7-28841a82cd26 2024-02-04T10:04:51+01:00 Ecophysiological responses of subarctic scots pine to ultraviolet (UV) radiation Turunen, Minna Sutinen, Marja Liisa Derome, Kirsti Krywult, Marek Smykla, Jerzy King, Steven Lakkala, Kaisa 2005 https://research.ulapland.fi/fi/publications/12a72599-96b4-4067-b3d7-28841a82cd26 http://www.scopus.com/inward/record.url?scp=33748515487&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=33748515487&partnerID=8YFLogxK eng eng https://research.ulapland.fi/fi/publications/12a72599-96b4-4067-b3d7-28841a82cd26 urn:ISBN:8389648261 urn:ISBN:9788389648266 info:eu-repo/semantics/restrictedAccess Turunen , M , Sutinen , M L , Derome , K , Krywult , M , Smykla , J , King , S & Lakkala , K 2005 , Ecophysiological responses of subarctic scots pine to ultraviolet (UV) radiation . in Polish Botanical Studies . Polish Botanical Studies , vol. 19 , pp. 143-150 . Defence mechanisms Ecophysiology Nitrate reductase (NR) activity Photosystem II Phylloplane fungi Pinus sylvestris Scots pine Subarctic Ultraviolet radiation /dk/atira/pure/person/fieldofscience2010/1/18/3 name=Plant biology microbiology virology bookPart 2005 ftulaplandcdispu 2024-01-11T00:03:35Z The focus of our field studies in the subartic of Finnish Lapland from 1997 onwards has been to investigate the effect of solar UV radiation on the ecophysiology of Scots pine. Our studies have indicated that solar UV-B BE exclusion during 1997-2002 caused transient effects on the growth of both Scots pine seedlings and saplings, which may not be related to changes in Photosystem II efficiency, however. Studies of the phylloplane fungi of Scots pine needles showed that Aureobasidium pullulans (de Bary) Arnaud and Cladosporium sp. populations were found to decrease, and Phoma sp. to increase, with UV exposure, but there was no UV effect found for total populations. It was also shown that both UV-B radiation and increasing temperature enhance the nitrate reductase (NR) activity of Scots pine needles. On the other band, our earlier studies have shown that the defence mechanisms (increase in the concentration of soluble phenolics, thickening of the epi- and hypodermal cell layers) of the Scots pine were functioning against ambient solar UV radiation. The daily UV dose rates during 1997-2002 were not very high and in our experiments, the exposure periods of three growing seasons were probably not long enough to cause greater effects that may be cumulative in nature and occur only after longer experimental periods. Book Part Subarctic Lapland LaCRIS - University of Lapland Current Research System |
institution |
Open Polar |
collection |
LaCRIS - University of Lapland Current Research System |
op_collection_id |
ftulaplandcdispu |
language |
English |
topic |
Defence mechanisms Ecophysiology Nitrate reductase (NR) activity Photosystem II Phylloplane fungi Pinus sylvestris Scots pine Subarctic Ultraviolet radiation /dk/atira/pure/person/fieldofscience2010/1/18/3 name=Plant biology microbiology virology |
spellingShingle |
Defence mechanisms Ecophysiology Nitrate reductase (NR) activity Photosystem II Phylloplane fungi Pinus sylvestris Scots pine Subarctic Ultraviolet radiation /dk/atira/pure/person/fieldofscience2010/1/18/3 name=Plant biology microbiology virology Turunen, Minna Sutinen, Marja Liisa Derome, Kirsti Krywult, Marek Smykla, Jerzy King, Steven Lakkala, Kaisa Ecophysiological responses of subarctic scots pine to ultraviolet (UV) radiation |
topic_facet |
Defence mechanisms Ecophysiology Nitrate reductase (NR) activity Photosystem II Phylloplane fungi Pinus sylvestris Scots pine Subarctic Ultraviolet radiation /dk/atira/pure/person/fieldofscience2010/1/18/3 name=Plant biology microbiology virology |
description |
The focus of our field studies in the subartic of Finnish Lapland from 1997 onwards has been to investigate the effect of solar UV radiation on the ecophysiology of Scots pine. Our studies have indicated that solar UV-B BE exclusion during 1997-2002 caused transient effects on the growth of both Scots pine seedlings and saplings, which may not be related to changes in Photosystem II efficiency, however. Studies of the phylloplane fungi of Scots pine needles showed that Aureobasidium pullulans (de Bary) Arnaud and Cladosporium sp. populations were found to decrease, and Phoma sp. to increase, with UV exposure, but there was no UV effect found for total populations. It was also shown that both UV-B radiation and increasing temperature enhance the nitrate reductase (NR) activity of Scots pine needles. On the other band, our earlier studies have shown that the defence mechanisms (increase in the concentration of soluble phenolics, thickening of the epi- and hypodermal cell layers) of the Scots pine were functioning against ambient solar UV radiation. The daily UV dose rates during 1997-2002 were not very high and in our experiments, the exposure periods of three growing seasons were probably not long enough to cause greater effects that may be cumulative in nature and occur only after longer experimental periods. |
format |
Book Part |
author |
Turunen, Minna Sutinen, Marja Liisa Derome, Kirsti Krywult, Marek Smykla, Jerzy King, Steven Lakkala, Kaisa |
author_facet |
Turunen, Minna Sutinen, Marja Liisa Derome, Kirsti Krywult, Marek Smykla, Jerzy King, Steven Lakkala, Kaisa |
author_sort |
Turunen, Minna |
title |
Ecophysiological responses of subarctic scots pine to ultraviolet (UV) radiation |
title_short |
Ecophysiological responses of subarctic scots pine to ultraviolet (UV) radiation |
title_full |
Ecophysiological responses of subarctic scots pine to ultraviolet (UV) radiation |
title_fullStr |
Ecophysiological responses of subarctic scots pine to ultraviolet (UV) radiation |
title_full_unstemmed |
Ecophysiological responses of subarctic scots pine to ultraviolet (UV) radiation |
title_sort |
ecophysiological responses of subarctic scots pine to ultraviolet (uv) radiation |
publishDate |
2005 |
url |
https://research.ulapland.fi/fi/publications/12a72599-96b4-4067-b3d7-28841a82cd26 http://www.scopus.com/inward/record.url?scp=33748515487&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=33748515487&partnerID=8YFLogxK |
genre |
Subarctic Lapland |
genre_facet |
Subarctic Lapland |
op_source |
Turunen , M , Sutinen , M L , Derome , K , Krywult , M , Smykla , J , King , S & Lakkala , K 2005 , Ecophysiological responses of subarctic scots pine to ultraviolet (UV) radiation . in Polish Botanical Studies . Polish Botanical Studies , vol. 19 , pp. 143-150 . |
op_relation |
https://research.ulapland.fi/fi/publications/12a72599-96b4-4067-b3d7-28841a82cd26 urn:ISBN:8389648261 urn:ISBN:9788389648266 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1789973587577274368 |