Free amino acid concentrations in needles of Norway spruce and Scots pine trees on different sites in areas with two levels of nitrogen deposition
The effects of nitrogen deposition and site quality on amino acid concentrations in needles of Piceaabies (L.) Karst. and Pinussylvestris L. trees were studied in two areas that represent different levels of nitrogen deposition: one area in southern Sweden and one area in northern Sweden receive, re...
Published in: | Canadian Journal of Forest Research |
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1990
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crcansciencepubl:10.1139/x90-150 2023-12-17T10:47:34+01:00 Free amino acid concentrations in needles of Norway spruce and Scots pine trees on different sites in areas with two levels of nitrogen deposition Edfast, Ann-Britt Näsholm, Torgny Ericsson, Anders 1990 http://dx.doi.org/10.1139/x90-150 http://www.nrcresearchpress.com/doi/pdf/10.1139/x90-150 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Forest Research volume 20, issue 8, page 1132-1136 ISSN 0045-5067 1208-6037 Ecology Forestry Global and Planetary Change journal-article 1990 crcansciencepubl https://doi.org/10.1139/x90-150 2023-11-19T13:39:28Z The effects of nitrogen deposition and site quality on amino acid concentrations in needles of Piceaabies (L.) Karst. and Pinussylvestris L. trees were studied in two areas that represent different levels of nitrogen deposition: one area in southern Sweden and one area in northern Sweden receive, respectively, approximately 20–30 and 3 kg•ha −1 •year −1 of nitrogen. On each area three site quality classes were chosen for each tree species. The site classes were chosen to represent poor, medium, and good sites typical for each area. Free amino acids in the needles were analyzed as 9-fluorenylmethyl formate derivatives by high-performance liquid chromatography. The total nitrogen was determined with a CHN elemental analyzer, and other mineral nutrients were determined with an inductively coupled plasma analyzer. Arginine, glutamic acid, glutamine, γ-aminobutyric acid, and aspartic acid were the quantitatively dominating amino acids in the needles of both species from all sites in both northern and southern Sweden. These amino acids represented 50–80% of the total concentration of free amino acids in the needles. The concentration of arginine in the needles of both spruce and pine increased with decreasing site index and showed high variations between individual trees. For both species, the highest concentrations of arginine were found in the southern area, which had the highest deposition of nitrogen. Concentrations of glutamic acid, glutamine, and γ-aminobutyric acid in the needles of both species showed significant differences between some of the sites on both areas, but these differences showed no general pattern that correlated with the site indexes. In relation to nitrogen, low concentrations of phosphorus and potassium were found in needles from the poorest spruce sites in both areas compared with corresponding values for the good spruce sites. The results are discussed in relation to nitrogen deposition and mineral nutrient imbalance. Article in Journal/Newspaper Northern Sweden Canadian Science Publishing (via Crossref) Norway The Needles ENVELOPE(-70.967,-70.967,-68.950,-68.950) Needles The ENVELOPE(-70.967,-70.967,-68.950,-68.950) Canadian Journal of Forest Research 20 8 1132 1136 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Ecology Forestry Global and Planetary Change |
spellingShingle |
Ecology Forestry Global and Planetary Change Edfast, Ann-Britt Näsholm, Torgny Ericsson, Anders Free amino acid concentrations in needles of Norway spruce and Scots pine trees on different sites in areas with two levels of nitrogen deposition |
topic_facet |
Ecology Forestry Global and Planetary Change |
description |
The effects of nitrogen deposition and site quality on amino acid concentrations in needles of Piceaabies (L.) Karst. and Pinussylvestris L. trees were studied in two areas that represent different levels of nitrogen deposition: one area in southern Sweden and one area in northern Sweden receive, respectively, approximately 20–30 and 3 kg•ha −1 •year −1 of nitrogen. On each area three site quality classes were chosen for each tree species. The site classes were chosen to represent poor, medium, and good sites typical for each area. Free amino acids in the needles were analyzed as 9-fluorenylmethyl formate derivatives by high-performance liquid chromatography. The total nitrogen was determined with a CHN elemental analyzer, and other mineral nutrients were determined with an inductively coupled plasma analyzer. Arginine, glutamic acid, glutamine, γ-aminobutyric acid, and aspartic acid were the quantitatively dominating amino acids in the needles of both species from all sites in both northern and southern Sweden. These amino acids represented 50–80% of the total concentration of free amino acids in the needles. The concentration of arginine in the needles of both spruce and pine increased with decreasing site index and showed high variations between individual trees. For both species, the highest concentrations of arginine were found in the southern area, which had the highest deposition of nitrogen. Concentrations of glutamic acid, glutamine, and γ-aminobutyric acid in the needles of both species showed significant differences between some of the sites on both areas, but these differences showed no general pattern that correlated with the site indexes. In relation to nitrogen, low concentrations of phosphorus and potassium were found in needles from the poorest spruce sites in both areas compared with corresponding values for the good spruce sites. The results are discussed in relation to nitrogen deposition and mineral nutrient imbalance. |
format |
Article in Journal/Newspaper |
author |
Edfast, Ann-Britt Näsholm, Torgny Ericsson, Anders |
author_facet |
Edfast, Ann-Britt Näsholm, Torgny Ericsson, Anders |
author_sort |
Edfast, Ann-Britt |
title |
Free amino acid concentrations in needles of Norway spruce and Scots pine trees on different sites in areas with two levels of nitrogen deposition |
title_short |
Free amino acid concentrations in needles of Norway spruce and Scots pine trees on different sites in areas with two levels of nitrogen deposition |
title_full |
Free amino acid concentrations in needles of Norway spruce and Scots pine trees on different sites in areas with two levels of nitrogen deposition |
title_fullStr |
Free amino acid concentrations in needles of Norway spruce and Scots pine trees on different sites in areas with two levels of nitrogen deposition |
title_full_unstemmed |
Free amino acid concentrations in needles of Norway spruce and Scots pine trees on different sites in areas with two levels of nitrogen deposition |
title_sort |
free amino acid concentrations in needles of norway spruce and scots pine trees on different sites in areas with two levels of nitrogen deposition |
publisher |
Canadian Science Publishing |
publishDate |
1990 |
url |
http://dx.doi.org/10.1139/x90-150 http://www.nrcresearchpress.com/doi/pdf/10.1139/x90-150 |
long_lat |
ENVELOPE(-70.967,-70.967,-68.950,-68.950) ENVELOPE(-70.967,-70.967,-68.950,-68.950) |
geographic |
Norway The Needles Needles The |
geographic_facet |
Norway The Needles Needles The |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_source |
Canadian Journal of Forest Research volume 20, issue 8, page 1132-1136 ISSN 0045-5067 1208-6037 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/x90-150 |
container_title |
Canadian Journal of Forest Research |
container_volume |
20 |
container_issue |
8 |
container_start_page |
1132 |
op_container_end_page |
1136 |
_version_ |
1785571457682636800 |