Active nitrogen fixation by Crocosphaera expands their niche despite the presence of ammonium - A case study
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F19%3A00517840" target="_blank" >RIV/61388971:_____/19:00517840 - isvavai.cz</a>
Alternative codes found
RIV/86652079:_____/19:00510069
Result on the web
<a href="https://www.nature.com/articles/s41598-019-51378-4" target="_blank" >https://www.nature.com/articles/s41598-019-51378-4</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41598-019-51378-4" target="_blank" >10.1038/s41598-019-51378-4</a>
Alternative languages
Result language
angličtina
Original language name
Active nitrogen fixation by Crocosphaera expands their niche despite the presence of ammonium - A case study
Original language description
Unicellular nitrogen fixer Crocosphaera contributes substantially to nitrogen fixation in oligotrophic subtropical gyres. They fix nitrogen even when significant amounts of ammonium are available. This has been puzzling since fixing nitrogen is energetically inefficient compared with using available ammonium. Here we show that by fixing nitrogen, Crocosphaera can increase their population and expand their niche despite the presence of ammonium. We have developed a simple but mechanistic model of Crocosphaera based on their growth in steady state culture. The model shows that the growth of Crocosphaera can become nitrogen limited despite their capability to fix nitrogen. When they fix nitrogen, the population increases by up to 78% relative to the case without nitrogen fixation. When we simulate a simple ecological situation where Crocosphaera exists with non-nitrogen-fixing phytoplankton, the relative abundance of Crocosphaera increases with nitrogen fixation, while the population of non-nitrogen-fixing phytoplankton decreases since a larger fraction of fixed nitrogen is consumed by Crocosphaera. Our study quantitatively supports the benefit of nitrogen fixation despite the high electron/energy costs, even when an energetically efficient alternative is available. It demonstrates a competitive aspect of Crocosphaera, permitting them to be regionally significant nitrogen fixers.
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
10620 - Other biological topics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Scientific Reports
ISSN
2045-2322
e-ISSN
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Volume of the periodical
9
Issue of the periodical within the volume
OCT 21 2019
Country of publishing house
GB - UNITED KINGDOM
Number of pages
11
Pages from-to
15064
UT code for WoS article
000491226200047
EID of the result in the Scopus database
2-s2.0-85073656120