Spatio-temporal variations determine plant-microbe competition for inorganic nitrogen in an alpine meadow
1. Plant microbe competition for available nitrogen (N) has been suggested to be an important mechanism controlling N limitation of plants in a variety of ecosystems. However, spatio-temporal patterns of competition between plants and microbes for soil N remain unclear. 2. Short-term (15)N tracer ex...
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ftchinacascnwipb:oai:210.75.249.4:363003/1578 2023-05-15T15:17:29+02:00 Spatio-temporal variations determine plant-microbe competition for inorganic nitrogen in an alpine meadow Xu, Xingliang Ouyang, Hua Richter, Andreas Wanek, Wolfgang Cao, Guangmin Kuzyakov, Yakov 2011-03-01 http://ir.nwipb.ac.cn//handle/363003/1578 英语 eng JOURNAL OF ECOLOGY Xu, XL; Ouyang, H; Richter, A; Wanek, W; Cao, GM; Kuzyakov, Y.Spatio-temporal variations determine plant-microbe competition for inorganic nitrogen in an alpine meadow,JOURNAL OF ECOLOGY,2011,99(2):563-571 http://ir.nwipb.ac.cn//handle/363003/1578 (15)n Tracer Alpine Kobresia Meadow Ammonium Inorganic n Nitrate Plant-microbe Competition Plant-soil (Below-ground) Interactions Rhizosphere Interactions Spatio-temporal Pattern Science & Technology Life Sciences & Biomedicine ARCTIC SALT-MARSH SOIL MICROBES ORGANIC-NITROGEN AMINO-ACIDS SEASONAL-VARIATION RHIZOSPHERE MICROORGANISMS VERTICAL-DISTRIBUTION TEMPERATE GRASSLANDS MINERAL-NUTRITION WILD PLANTS Plant Sciences Environmental Sciences & Ecology Ecology Article 期刊论文 2011 ftchinacascnwipb 2023-03-26T20:22:12Z 1. Plant microbe competition for available nitrogen (N) has been suggested to be an important mechanism controlling N limitation of plants in a variety of ecosystems. However, spatio-temporal patterns of competition between plants and microbes for soil N remain unclear. 2. Short-term (15)N tracer experiments were conducted during a growing season (July, August and September) in an alpine meadow on the Tibetan Plateau to unravel spatio-temporal patterns of plant microbe competition for NH(4)(+) and NO(3)(-). 3. Alpine plants were poorer competitors than soil microorganisms for inorganic N in July compared with August and September. Occupation of soil volume by roots and root density (high in August and September) played a greater role in plant microbe competition than air temperature or precipitation (high in July). 4. In topsoils (0-5 cm, highest root density), alpine plants effectively competed with soil microorganisms for N and showed a preference for (15)NO(3)(-), while soil microorganisms that preferentially took up (15)NH(4)(+) out-competed plants below 5 cm soil depth (lower root density). Competition between plants and soil microorganisms for inorganic N strongly depended on root density (P < 0.0001, R(2) = 0.93, exponential decay model). 5. Synthesis. Plant-microbe competition for inorganic N showed a clear spatio-temporal pattern in alpine meadows depending on (i) root density and therefore soil depth, (ii) inorganic N form, and (iii) different periods during the growing season. These findings have important implications for our understanding of above-ground below-ground interactions and plant-microbial competition for available N. 1. Plant microbe competition for available nitrogen (N) has been suggested to be an important mechanism controlling N limitation of plants in a variety of ecosystems. However, spatio-temporal patterns of competition between plants and microbes for soil N remain unclear. Article in Journal/Newspaper Arctic Northwest Institute of Plateau Biology: NWIPB OpenIR (Chinese Academy of Sciences) Arctic |
institution |
Open Polar |
collection |
Northwest Institute of Plateau Biology: NWIPB OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacascnwipb |
language |
English |
topic |
(15)n Tracer Alpine Kobresia Meadow Ammonium Inorganic n Nitrate Plant-microbe Competition Plant-soil (Below-ground) Interactions Rhizosphere Interactions Spatio-temporal Pattern Science & Technology Life Sciences & Biomedicine ARCTIC SALT-MARSH SOIL MICROBES ORGANIC-NITROGEN AMINO-ACIDS SEASONAL-VARIATION RHIZOSPHERE MICROORGANISMS VERTICAL-DISTRIBUTION TEMPERATE GRASSLANDS MINERAL-NUTRITION WILD PLANTS Plant Sciences Environmental Sciences & Ecology Ecology |
spellingShingle |
(15)n Tracer Alpine Kobresia Meadow Ammonium Inorganic n Nitrate Plant-microbe Competition Plant-soil (Below-ground) Interactions Rhizosphere Interactions Spatio-temporal Pattern Science & Technology Life Sciences & Biomedicine ARCTIC SALT-MARSH SOIL MICROBES ORGANIC-NITROGEN AMINO-ACIDS SEASONAL-VARIATION RHIZOSPHERE MICROORGANISMS VERTICAL-DISTRIBUTION TEMPERATE GRASSLANDS MINERAL-NUTRITION WILD PLANTS Plant Sciences Environmental Sciences & Ecology Ecology Xu, Xingliang Ouyang, Hua Richter, Andreas Wanek, Wolfgang Cao, Guangmin Kuzyakov, Yakov Spatio-temporal variations determine plant-microbe competition for inorganic nitrogen in an alpine meadow |
topic_facet |
(15)n Tracer Alpine Kobresia Meadow Ammonium Inorganic n Nitrate Plant-microbe Competition Plant-soil (Below-ground) Interactions Rhizosphere Interactions Spatio-temporal Pattern Science & Technology Life Sciences & Biomedicine ARCTIC SALT-MARSH SOIL MICROBES ORGANIC-NITROGEN AMINO-ACIDS SEASONAL-VARIATION RHIZOSPHERE MICROORGANISMS VERTICAL-DISTRIBUTION TEMPERATE GRASSLANDS MINERAL-NUTRITION WILD PLANTS Plant Sciences Environmental Sciences & Ecology Ecology |
description |
1. Plant microbe competition for available nitrogen (N) has been suggested to be an important mechanism controlling N limitation of plants in a variety of ecosystems. However, spatio-temporal patterns of competition between plants and microbes for soil N remain unclear. 2. Short-term (15)N tracer experiments were conducted during a growing season (July, August and September) in an alpine meadow on the Tibetan Plateau to unravel spatio-temporal patterns of plant microbe competition for NH(4)(+) and NO(3)(-). 3. Alpine plants were poorer competitors than soil microorganisms for inorganic N in July compared with August and September. Occupation of soil volume by roots and root density (high in August and September) played a greater role in plant microbe competition than air temperature or precipitation (high in July). 4. In topsoils (0-5 cm, highest root density), alpine plants effectively competed with soil microorganisms for N and showed a preference for (15)NO(3)(-), while soil microorganisms that preferentially took up (15)NH(4)(+) out-competed plants below 5 cm soil depth (lower root density). Competition between plants and soil microorganisms for inorganic N strongly depended on root density (P < 0.0001, R(2) = 0.93, exponential decay model). 5. Synthesis. Plant-microbe competition for inorganic N showed a clear spatio-temporal pattern in alpine meadows depending on (i) root density and therefore soil depth, (ii) inorganic N form, and (iii) different periods during the growing season. These findings have important implications for our understanding of above-ground below-ground interactions and plant-microbial competition for available N. 1. Plant microbe competition for available nitrogen (N) has been suggested to be an important mechanism controlling N limitation of plants in a variety of ecosystems. However, spatio-temporal patterns of competition between plants and microbes for soil N remain unclear. |
format |
Article in Journal/Newspaper |
author |
Xu, Xingliang Ouyang, Hua Richter, Andreas Wanek, Wolfgang Cao, Guangmin Kuzyakov, Yakov |
author_facet |
Xu, Xingliang Ouyang, Hua Richter, Andreas Wanek, Wolfgang Cao, Guangmin Kuzyakov, Yakov |
author_sort |
Xu, Xingliang |
title |
Spatio-temporal variations determine plant-microbe competition for inorganic nitrogen in an alpine meadow |
title_short |
Spatio-temporal variations determine plant-microbe competition for inorganic nitrogen in an alpine meadow |
title_full |
Spatio-temporal variations determine plant-microbe competition for inorganic nitrogen in an alpine meadow |
title_fullStr |
Spatio-temporal variations determine plant-microbe competition for inorganic nitrogen in an alpine meadow |
title_full_unstemmed |
Spatio-temporal variations determine plant-microbe competition for inorganic nitrogen in an alpine meadow |
title_sort |
spatio-temporal variations determine plant-microbe competition for inorganic nitrogen in an alpine meadow |
publishDate |
2011 |
url |
http://ir.nwipb.ac.cn//handle/363003/1578 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
JOURNAL OF ECOLOGY Xu, XL; Ouyang, H; Richter, A; Wanek, W; Cao, GM; Kuzyakov, Y.Spatio-temporal variations determine plant-microbe competition for inorganic nitrogen in an alpine meadow,JOURNAL OF ECOLOGY,2011,99(2):563-571 http://ir.nwipb.ac.cn//handle/363003/1578 |
_version_ |
1766347723985911808 |