Which root traits determine nitrogen uptake by alpine plant species on the Tibetan Plateau?
Nitrogen (N) is one of the most important limiting factors influencing plant growth and reproduction in alpine and tundra ecosystems. However, in situ observations of the effects of root traits on N absorption by alpine plant species are still lacking. We investigated the rates of N uptake and the e...
Published in: | Plant and Soil |
---|---|
Main Authors: | , , , , |
Format: | Report |
Language: | English |
Published: |
SPRINGER
2018
|
Subjects: | |
Online Access: | http://ir.imde.ac.cn/handle/131551/22936 https://doi.org/10.1007/s11104-017-3434-3 |
id |
ftchinacadscimhe:oai:ir.imde.ac.cn:131551/22936 |
---|---|
record_format |
openpolar |
spelling |
ftchinacadscimhe:oai:ir.imde.ac.cn:131551/22936 2023-05-15T15:16:30+02:00 Which root traits determine nitrogen uptake by alpine plant species on the Tibetan Plateau? Hong, Jiangtao Ma, Xingxing Yan, Yan Zhang, Xiaoke Wang, Xiaodan 2018-03-01 http://ir.imde.ac.cn/handle/131551/22936 https://doi.org/10.1007/s11104-017-3434-3 英语 eng SPRINGER PLANT AND SOIL http://ir.imde.ac.cn/handle/131551/22936 doi:10.1007/s11104-017-3434-3 Ammonium nitrogen Nitrate nitrogen Glycine Root morphology Nitrogen absorption ORGANIC NITROGEN SOIL MICROBES FINE ROOTS NICHE COMPLEMENTARITY NITRATE UPTAKE ARCTIC TUNDRA PEACH-TREES FOREST FORMS PREFERENCES Agriculture Plant Sciences Agronomy Soil Science 期刊论文 2018 ftchinacadscimhe https://doi.org/10.1007/s11104-017-3434-3 2022-12-19T18:20:36Z Nitrogen (N) is one of the most important limiting factors influencing plant growth and reproduction in alpine and tundra ecosystems. However, in situ observations of the effects of root traits on N absorption by alpine plant species are still lacking. We investigated the rates of N uptake and the effect of root characteristics in ten common herbaceous alpine plant species using a N-15 isotope tracer technique and the root systems of plants growing in a semi-arid steppe environment on the Tibetan Plateau. Our objective was to determine the root traits (root biomass, volume, surface area, average diameter, length, specific root length and specific root area) that make the largest contribution to the total uptake of N (N-15-NO3 (-), N-15-NH4 (+) or N-15-glycine) by alpine plant species. Monocotyledonous species had higher absorption rates for N-15-NH4 (+), N-15-NO3 (-), N-15-glycine and total N-15 than dicotyledonous species (P < 0.05). The root biomass, volume, surface area and average diameter were negatively correlated with the absorption capacity for N-15-NH4 (+), N-15-NO3 (-) and total N-15 across the ten alpine plant species. However, the specific root length and the specific root area had significantly positive effects on the uptake of N. In contrast with traditional views on the uptake of N, the N uptake rate was not improved by a larger root volume or root surface area for these alpine plant species in a high-altitude ecosystem. Root morphological traits had greater impacts on N absorption than traits related to the root system size in alpine herbaceous plants. Report Arctic Tundra IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) Arctic Plant and Soil 424 1-2 63 72 |
institution |
Open Polar |
collection |
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) |
op_collection_id |
ftchinacadscimhe |
language |
English |
topic |
Ammonium nitrogen Nitrate nitrogen Glycine Root morphology Nitrogen absorption ORGANIC NITROGEN SOIL MICROBES FINE ROOTS NICHE COMPLEMENTARITY NITRATE UPTAKE ARCTIC TUNDRA PEACH-TREES FOREST FORMS PREFERENCES Agriculture Plant Sciences Agronomy Soil Science |
spellingShingle |
Ammonium nitrogen Nitrate nitrogen Glycine Root morphology Nitrogen absorption ORGANIC NITROGEN SOIL MICROBES FINE ROOTS NICHE COMPLEMENTARITY NITRATE UPTAKE ARCTIC TUNDRA PEACH-TREES FOREST FORMS PREFERENCES Agriculture Plant Sciences Agronomy Soil Science Hong, Jiangtao Ma, Xingxing Yan, Yan Zhang, Xiaoke Wang, Xiaodan Which root traits determine nitrogen uptake by alpine plant species on the Tibetan Plateau? |
topic_facet |
Ammonium nitrogen Nitrate nitrogen Glycine Root morphology Nitrogen absorption ORGANIC NITROGEN SOIL MICROBES FINE ROOTS NICHE COMPLEMENTARITY NITRATE UPTAKE ARCTIC TUNDRA PEACH-TREES FOREST FORMS PREFERENCES Agriculture Plant Sciences Agronomy Soil Science |
description |
Nitrogen (N) is one of the most important limiting factors influencing plant growth and reproduction in alpine and tundra ecosystems. However, in situ observations of the effects of root traits on N absorption by alpine plant species are still lacking. We investigated the rates of N uptake and the effect of root characteristics in ten common herbaceous alpine plant species using a N-15 isotope tracer technique and the root systems of plants growing in a semi-arid steppe environment on the Tibetan Plateau. Our objective was to determine the root traits (root biomass, volume, surface area, average diameter, length, specific root length and specific root area) that make the largest contribution to the total uptake of N (N-15-NO3 (-), N-15-NH4 (+) or N-15-glycine) by alpine plant species. Monocotyledonous species had higher absorption rates for N-15-NH4 (+), N-15-NO3 (-), N-15-glycine and total N-15 than dicotyledonous species (P < 0.05). The root biomass, volume, surface area and average diameter were negatively correlated with the absorption capacity for N-15-NH4 (+), N-15-NO3 (-) and total N-15 across the ten alpine plant species. However, the specific root length and the specific root area had significantly positive effects on the uptake of N. In contrast with traditional views on the uptake of N, the N uptake rate was not improved by a larger root volume or root surface area for these alpine plant species in a high-altitude ecosystem. Root morphological traits had greater impacts on N absorption than traits related to the root system size in alpine herbaceous plants. |
format |
Report |
author |
Hong, Jiangtao Ma, Xingxing Yan, Yan Zhang, Xiaoke Wang, Xiaodan |
author_facet |
Hong, Jiangtao Ma, Xingxing Yan, Yan Zhang, Xiaoke Wang, Xiaodan |
author_sort |
Hong, Jiangtao |
title |
Which root traits determine nitrogen uptake by alpine plant species on the Tibetan Plateau? |
title_short |
Which root traits determine nitrogen uptake by alpine plant species on the Tibetan Plateau? |
title_full |
Which root traits determine nitrogen uptake by alpine plant species on the Tibetan Plateau? |
title_fullStr |
Which root traits determine nitrogen uptake by alpine plant species on the Tibetan Plateau? |
title_full_unstemmed |
Which root traits determine nitrogen uptake by alpine plant species on the Tibetan Plateau? |
title_sort |
which root traits determine nitrogen uptake by alpine plant species on the tibetan plateau? |
publisher |
SPRINGER |
publishDate |
2018 |
url |
http://ir.imde.ac.cn/handle/131551/22936 https://doi.org/10.1007/s11104-017-3434-3 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Tundra |
genre_facet |
Arctic Tundra |
op_relation |
PLANT AND SOIL http://ir.imde.ac.cn/handle/131551/22936 doi:10.1007/s11104-017-3434-3 |
op_doi |
https://doi.org/10.1007/s11104-017-3434-3 |
container_title |
Plant and Soil |
container_volume |
424 |
container_issue |
1-2 |
container_start_page |
63 |
op_container_end_page |
72 |
_version_ |
1766346801975132160 |