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@ARTICLE{Meredith:862431,
author = {Meredith, Laura K. and Ogée, Jérôme and Boye, Kristin
and Singer, Esther and Wingate, Lisa and von Sperber,
Christian and Sengupta, Aditi and Whelan, Mary and Pang,
Erin and Keiluweit, Marco and Brüggemann, Nicolas and
Berry, Joe A. and Welander, Paula V.},
title = {{S}oil exchange rates of {COS} and {CO}18{O} differ with
the diversity of microbial communities and their carbonic
anhydrase enzymes},
journal = {The ISME journal},
volume = {13},
number = {2},
issn = {1751-7370},
address = {Basingstoke},
publisher = {Nature Publishing Group},
reportid = {FZJ-2019-02747},
pages = {290 - 300},
year = {2019},
abstract = {Differentiating the contributions of photosynthesis and
respiration to the global carbon cycle is critical for
improving predictive climate models. Carbonic anhydrase (CA)
activity in leaves is responsible for the largest
biosphere-atmosphere trace gas fluxes of carbonyl sulfide
(COS) and the oxygen-18 isotopologue of carbon dioxide
(CO18O) that both reflect gross photosynthetic rates.
However, CA activity also occurs in soils and will be a
source of uncertainty in the use of COS and CO18O as carbon
cycle tracers until process-based constraints are improved.
In this study, we measured COS and CO18O exchange rates and
estimated the corresponding CA activity in soils from a
range of biomes and land use types. Soil CA activity was not
uniform for COS and CO2, and patterns of divergence were
related to microbial community composition and CA gene
expression patterns. In some cases, the same microbial taxa
and CA classes catalyzed both COS and CO2 reactions in soil,
but in other cases the specificity towards the two
substrates differed markedly. CA activity for COS was
related to fungal taxa and β-D-CA expression, whereas CA
activity for CO2 was related to algal and bacterial taxa and
α-CA expression. This study integrates gas exchange
measurements, enzyme activity models, and characterization
of soil taxonomic and genetic diversity to build connections
between CA activity and the soil microbiome. Importantly,
our results identify kinetic parameters to represent soil CA
activity during application of COS and CO18O as carbon cycle
tracers.},
cin = {IBG-3},
ddc = {570},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255)},
pid = {G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30214028},
UT = {WOS:000455747900005},
doi = {10.1038/s41396-018-0270-2},
url = {https://juser.fz-juelich.de/record/862431},
}