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231224s2014 xx |||||o 00| ||eng c |
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|a 10.1111/nph.12569
|2 doi
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|a pubmed25n0773.xml
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|a DE-627
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|e rakwb
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|a eng
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|a Fuchslueger, Lucia
|e verfasserin
|4 aut
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|a Experimental drought reduces the transfer of recently fixed plant carbon to soil microbes and alters the bacterial community composition in a mountain meadow
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|c 2014
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 01.09.2014
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|a Date Revised 23.03.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2013 The Authors. New Phytologist © 2013 New Phytologist Trust.
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|a Drought affects plants and soil microorganisms, but it is still not clear how it alters the carbon (C) transfer at the plant-microbial interface. Here, we tested direct and indirect effects of drought on soil microbes and microbial turnover of recent plant-derived C in a mountain meadow. Microbial community composition was assessed using phospholipid fatty acids (PLFAs); the allocation of recent plant-derived C to microbial groups was analysed by pulse-labelling of canopy sections with (13) CO2 and the subsequent tracing of the label into microbial PLFAs. Microbial biomass was significantly higher in plots exposed to a severe experimental drought. In addition, drought induced a shift of the microbial community composition, mainly driven by an increase of Gram-positive bacteria. Drought reduced belowground C allocation, but not the transfer of recently plant-assimilated C to fungi, and in particular reduced tracer uptake by bacteria. This was accompanied by an increase of (13) C in the extractable organic C pool during drought, which was even more pronounced after plots were mown. We conclude that drought weakened the link between plant and bacterial, but not fungal, C turnover, and facilitated the growth of potentially slow-growing, drought-adapted soil microbes, such as Gram-positive bacteria
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a 13C pulse-labelling
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|a carbon allocation
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|a drought
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|a microbial community composition
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|a mountain grassland
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|a mowing
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|a phospholipid fatty acids
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|a Carbon Isotopes
|2 NLM
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|a Soil
|2 NLM
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|a Water
|2 NLM
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|a 059QF0KO0R
|2 NLM
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|a Carbon
|2 NLM
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|a 7440-44-0
|2 NLM
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|a Nitrogen
|2 NLM
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|a N762921K75
|2 NLM
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| 700 |
1 |
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|a Bahn, Michael
|e verfasserin
|4 aut
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|a Fritz, Karina
|e verfasserin
|4 aut
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| 700 |
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|a Hasibeder, Roland
|e verfasserin
|4 aut
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|a Richter, Andreas
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1990
|g 201(2014), 3 vom: 31. Feb., Seite 916-927
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|x 1469-8137
|7 nnns
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|g volume:201
|g year:2014
|g number:3
|g day:31
|g month:02
|g pages:916-927
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|u http://dx.doi.org/10.1111/nph.12569
|3 Volltext
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