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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1111/gcb.16226
|2 doi
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|a pubmed24n1137.xml
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|a (DE-627)NLM341393878
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|a (NLM)35617026
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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 |
1 |
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|a Hu, Junxi
|e verfasserin
|4 aut
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| 245 |
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|a Nitrogen addition to soil affects microbial carbon use efficiency
|b Meta-analysis of similarities and differences in 13 C and 18 O approaches
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 15.07.2022
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|a Date Revised 17.09.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2022 John Wiley & Sons Ltd.
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|a The carbon use efficiency (CUE) of soil microorganisms is a critical parameter for the first step of organic carbon (C) transformation by and incorporation into microbial biomass and shapes C cycling in terrestrial ecosystems. As C and nitrogen (N) cycles interact closely and N availability affects microbial metabolism, N addition to soil may shift the microbial CUE. We conducted a meta-analysis (100 data pairs) to generalize information about the microbial CUE response to N addition in soil based on the two most common CUE estimation approaches: (i) 13 C-labelled substrate addition (13 C-substrate) and (ii) 18 O-labelled water addition (18 O-H2 O). The mean microbial CUE in soils across all biomes and approaches was 0.37. The effects of N addition on CUE, however, were depended on the approach: CUE decreased by 12% if measured by the 13 C-substrate approach, while CUE increased by 11% if measured by the 18 O-H2 O approach. These differences in the microbial CUE response depending on the estimation approach are explained by the divergent reactions of microbial growth to N addition: N addition decreases the 13 C incorporation into microbial biomass (this parameter is in the numerator by CUE calculation based on the 13 C-substrate approach). In contrast, N addition slightly increases (although statistically insignificant) the microbial growth rate (in the numerator of the CUE calculation when assessed by the 18 O-H2 O approach), significantly raising the CUE. We explained these N addition effects based on CUE regulation mechanisms at the metabolic, cell, community, and ecosystem levels. Consequently, the differences in the microbial responses (microbial growth, respiration, C incorporation, community composition, and dormant or active states) between the 13 C-substrate and 18 O-H2 O approaches need to be considered. Thus, these two CUE estimation approaches should be compared to understand microbially mediated C and nutrient dynamics under increasing anthropogenic N input and other global change effects
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|a Journal Article
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|a Meta-Analysis
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|a approach comparison
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| 650 |
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|a carbon mineralization
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| 650 |
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|a global change
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| 650 |
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4 |
|a microbial growth
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| 650 |
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4 |
|a microbial respiration
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| 650 |
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4 |
|a nutrient addition
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| 650 |
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|a Soil
|2 NLM
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| 650 |
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|a Carbon
|2 NLM
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| 650 |
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|a 7440-44-0
|2 NLM
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| 650 |
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|a Nitrogen
|2 NLM
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| 650 |
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7 |
|a N762921K75
|2 NLM
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| 700 |
1 |
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|a Huang, Congde
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhou, Shixing
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kuzyakov, Yakov
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Global change biology
|d 1999
|g 28(2022), 16 vom: 15. Aug., Seite 4977-4988
|w (DE-627)NLM098239996
|x 1365-2486
|7 nnns
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| 773 |
1 |
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|g volume:28
|g year:2022
|g number:16
|g day:15
|g month:08
|g pages:4977-4988
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| 856 |
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|u http://dx.doi.org/10.1111/gcb.16226
|3 Volltext
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|d 28
|j 2022
|e 16
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|c 08
|h 4977-4988
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