Nitrogen fixation by three species of leguminosae in the Canadian High Arctic Tundra
Abstract. Significant levels of nitrogenase activity (nitrogen fixation) were demonstrated in three species of Arctic legumes ( Oxytropis maydelliana, O. arctobia and Astragalus alpinus ) growing in high tundra at Sarcpa Lake, Melville Peninsula, N.W.T. Nitrogenase activity of intact plants was corr...
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Online Access: | http://dx.doi.org/10.1111/j.1365-3040.1988.tb01156.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-3040.1988.tb01156.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-3040.1988.tb01156.x |
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crwiley:10.1111/j.1365-3040.1988.tb01156.x 2024-06-02T08:01:03+00:00 Nitrogen fixation by three species of leguminosae in the Canadian High Arctic Tundra SCHULMAN, H. M. LEWIS, M. C. TIPPING, E. M. BORDELEAU, L. M. 1988 http://dx.doi.org/10.1111/j.1365-3040.1988.tb01156.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-3040.1988.tb01156.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-3040.1988.tb01156.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Plant, Cell & Environment volume 11, issue 8, page 721-728 ISSN 0140-7791 1365-3040 journal-article 1988 crwiley https://doi.org/10.1111/j.1365-3040.1988.tb01156.x 2024-05-03T10:59:18Z Abstract. Significant levels of nitrogenase activity (nitrogen fixation) were demonstrated in three species of Arctic legumes ( Oxytropis maydelliana, O. arctobia and Astragalus alpinus ) growing in high tundra at Sarcpa Lake, Melville Peninsula, N.W.T. Nitrogenase activity of intact plants was correlated with the number of nodules per plant, with field soil temperatures and limited by water shortage. Activity in freshly detached nodules showed a plateau of maximum activity between 10°C and 25°C and a near linear decline with temperature down to 0°C. Unusually, the segmented nodules of all three species are perennial in which growth and leghaemoglobin production resumes each spring from an overwintering apical meristem. Nodules are most numerous in the warmer soil stratum (2–10 cm. depth). Other studies indicate that the arctic rhizobia belong to a single cold‐adapted species which has co‐evolved with the legumes of tundra. Article in Journal/Newspaper Arctic Melville Peninsula Tundra Wiley Online Library Arctic Lake Melville ENVELOPE(-59.557,-59.557,53.728,53.728) Melville Peninsula ENVELOPE(-83.999,-83.999,68.001,68.001) Sarcpa Lake ENVELOPE(-83.267,-83.267,68.524,68.524) Plant, Cell and Environment 11 8 721 728 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract. Significant levels of nitrogenase activity (nitrogen fixation) were demonstrated in three species of Arctic legumes ( Oxytropis maydelliana, O. arctobia and Astragalus alpinus ) growing in high tundra at Sarcpa Lake, Melville Peninsula, N.W.T. Nitrogenase activity of intact plants was correlated with the number of nodules per plant, with field soil temperatures and limited by water shortage. Activity in freshly detached nodules showed a plateau of maximum activity between 10°C and 25°C and a near linear decline with temperature down to 0°C. Unusually, the segmented nodules of all three species are perennial in which growth and leghaemoglobin production resumes each spring from an overwintering apical meristem. Nodules are most numerous in the warmer soil stratum (2–10 cm. depth). Other studies indicate that the arctic rhizobia belong to a single cold‐adapted species which has co‐evolved with the legumes of tundra. |
format |
Article in Journal/Newspaper |
author |
SCHULMAN, H. M. LEWIS, M. C. TIPPING, E. M. BORDELEAU, L. M. |
spellingShingle |
SCHULMAN, H. M. LEWIS, M. C. TIPPING, E. M. BORDELEAU, L. M. Nitrogen fixation by three species of leguminosae in the Canadian High Arctic Tundra |
author_facet |
SCHULMAN, H. M. LEWIS, M. C. TIPPING, E. M. BORDELEAU, L. M. |
author_sort |
SCHULMAN, H. M. |
title |
Nitrogen fixation by three species of leguminosae in the Canadian High Arctic Tundra |
title_short |
Nitrogen fixation by three species of leguminosae in the Canadian High Arctic Tundra |
title_full |
Nitrogen fixation by three species of leguminosae in the Canadian High Arctic Tundra |
title_fullStr |
Nitrogen fixation by three species of leguminosae in the Canadian High Arctic Tundra |
title_full_unstemmed |
Nitrogen fixation by three species of leguminosae in the Canadian High Arctic Tundra |
title_sort |
nitrogen fixation by three species of leguminosae in the canadian high arctic tundra |
publisher |
Wiley |
publishDate |
1988 |
url |
http://dx.doi.org/10.1111/j.1365-3040.1988.tb01156.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-3040.1988.tb01156.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-3040.1988.tb01156.x |
long_lat |
ENVELOPE(-59.557,-59.557,53.728,53.728) ENVELOPE(-83.999,-83.999,68.001,68.001) ENVELOPE(-83.267,-83.267,68.524,68.524) |
geographic |
Arctic Lake Melville Melville Peninsula Sarcpa Lake |
geographic_facet |
Arctic Lake Melville Melville Peninsula Sarcpa Lake |
genre |
Arctic Melville Peninsula Tundra |
genre_facet |
Arctic Melville Peninsula Tundra |
op_source |
Plant, Cell & Environment volume 11, issue 8, page 721-728 ISSN 0140-7791 1365-3040 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-3040.1988.tb01156.x |
container_title |
Plant, Cell and Environment |
container_volume |
11 |
container_issue |
8 |
container_start_page |
721 |
op_container_end_page |
728 |
_version_ |
1800745308666200064 |