Photoheterotrophy by aerobic anoxygenic bacteria modulates carbon fluxes in a freshwater lake
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F22%3A00556152" target="_blank" >RIV/61388971:_____/22:00556152 - isvavai.cz</a>
Alternative codes found
RIV/60076658:12310/22:43905630
Result on the web
<a href="https://www.nature.com/articles/s41396-021-01142-2" target="_blank" >https://www.nature.com/articles/s41396-021-01142-2</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41396-021-01142-2" target="_blank" >10.1038/s41396-021-01142-2</a>
Alternative languages
Result language
angličtina
Original language name
Photoheterotrophy by aerobic anoxygenic bacteria modulates carbon fluxes in a freshwater lake
Original language description
Lakes are a significant component of the global carbon cycle. Respiration exceeds net primary production in most freshwater lakes, making them a source of CO2 to the atmosphere. Driven by heterotrophic microorganisms, respiration is assumed to be unaffected by light, thus it is measured in the dark. However, photoheterotrophs, such as aerobic anoxygenic photoheterotrophic (AAP) bacteria that produce ATP via photochemical reactions, substantially reduce respiration in the light. They are an abundant and active component of bacterioplankton, but their photoheterotrophic contribution to microbial community metabolism remains unquantified. We showed that the community respiration rate in a freshwater lake was reduced by 15.2% (95% confidence interval (CI): 6.6-23.8%) in infrared light that is usable by AAP bacteria but not by primary producers. Moreover, significantly higher assimilation rates of glucose (18.1%, 7.8-28.4%), pyruvate (9.5%, 4.2-14.8%), and leucine (5.9%, 0.1-11.6%) were measured in infrared light. At the ecosystem scale, the amount of CO2 from respiration unbalanced by net primary production was by 3.69 x 10(9) g CO2 lower over these two sampling seasons when measured in the infrared light. Our results demonstrate that dark measurements of microbial activity significantly bias the carbon fluxes, providing a new paradigm for their quantification in aquatic environments.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10606 - Microbiology
Result continuities
Project
<a href="/en/project/GJ18-14095Y" target="_blank" >GJ18-14095Y: Aerobic anoxygenic phototrophs: their role in carbon utilization in light in freshwater ecosystems (AAPs rule!)</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
The ISME Journal
ISSN
1751-7362
e-ISSN
1751-7370
Volume of the periodical
16
Issue of the periodical within the volume
4
Country of publishing house
GB - UNITED KINGDOM
Number of pages
9
Pages from-to
1046-1054
UT code for WoS article
000720700700001
EID of the result in the Scopus database
2-s2.0-85119400008