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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1111/gcb.15914
|2 doi
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|a pubmed24n1104.xml
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|a (DE-627)NLM331474247
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|a (NLM)34606141
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Zhou, Jun
|e verfasserin
|4 aut
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| 245 |
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|a Mobilization of soil phosphate after 8 years of warming is linked to plant phosphorus-acquisition strategies in an alpine meadow on the Qinghai-Tibetan Plateau
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|c 2021
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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| 500 |
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|a Date Completed 17.11.2021
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|a Date Revised 17.11.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2021 John Wiley & Sons Ltd.
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|a Phosphorus (P) is essential for productivity of alpine grassland ecosystems, which are sensitive to global warming. We tested the hypotheses that (1) mobilized 'calcium-bound inorganic P' (Ca-Pi ) is a major source of plant-available P in alpine meadows with alkaline soils after long-term warming, (2) mobilization of Ca-Pi is linked to effective plant carboxylate-releasing P-acquisition strategies under warming, and (3) the mobilization is also related to plant nitrogen (N)-acquisition. We conducted an 8-year warming experiment in an alpine meadow (4635 m above sea level) on the Qinghai-Tibetan Plateau. A significant increase in P concentration in both aboveground and belowground biomass indicates an increased mobilization and assimilation of P by plants under warming. We observed a significant decrease in Ca-Pi , no change in moderately-labile organic P, and an increase in highly resistant organic P after warming. There was no increase in phosphatase activities. Our results indicate that Ca-Pi , rather than organic P was the major source of plant-available P for alpine meadows under warming. Higher leaf manganese concentrations of sedges and forbs after warming indicate that carboxylates released by these plants are a key mechanism of Ca-Pi mobilization. The insignificant increase in Rhizobiales after warming and the very small cover of legumes show a minor role of N-acquisition strategies in solubilizing phosphate. The insignificant change in relative abundance of mycorrhizal fungi and bacteria related to P cycling after warming shows a small contribution of microorganisms to Ca-Pi mobilization. The significant increase in leaf N and P concentrations and N:P ratio of grasses and no change in sedge leaf N:P ratio reflect distinct responses of plant nutrient status to warming due to differences in P-acquisition strategies. We highlight the important effects of belowground P-acquisition strategies, especially plant carboxylate-releasing P-acquisition strategies on responses of plants to global changes in alpine meadows
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|a Journal Article
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|a alpine grassland
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|a global warming
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|a low-molecular-weight organic acids
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4 |
|a mycorrhiza
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|a phosphate-solubilizing bacteria
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| 650 |
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4 |
|a plant nutrient-acquisition strategies
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| 650 |
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4 |
|a soil P forms
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| 650 |
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|a Phosphates
|2 NLM
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| 650 |
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|a Soil
|2 NLM
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| 650 |
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|a Phosphorus
|2 NLM
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| 650 |
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7 |
|a 27YLU75U4W
|2 NLM
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| 700 |
1 |
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|a Li, Xiao-Long
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Peng, Fei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Chengyang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lai, Chimin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a You, Quangang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xue, Xian
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wu, Yanhong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Sun, Hongyang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chen, Yang
|e verfasserin
|4 aut
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|a Zhong, Hongtao
|e verfasserin
|4 aut
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| 700 |
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|a Lambers, Hans
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Global change biology
|d 1999
|g 27(2021), 24 vom: 11. Dez., Seite 6578-6591
|w (DE-627)NLM098239996
|x 1365-2486
|7 nnns
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| 773 |
1 |
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|g volume:27
|g year:2021
|g number:24
|g day:11
|g month:12
|g pages:6578-6591
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| 856 |
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|u http://dx.doi.org/10.1111/gcb.15914
|3 Volltext
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|h 6578-6591
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