Co-acquisition of mineral-bound iron and phosphorus by natural Trichodesmium colonies
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F23%3A00572416" target="_blank" >RIV/61388971:_____/23:00572416 - isvavai.cz</a>
Result on the web
<a href="https://aslopubs.onlinelibrary.wiley.com/doi/10.1002/lno.12329" target="_blank" >https://aslopubs.onlinelibrary.wiley.com/doi/10.1002/lno.12329</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/lno.12329" target="_blank" >10.1002/lno.12329</a>
Alternative languages
Result language
angličtina
Original language name
Co-acquisition of mineral-bound iron and phosphorus by natural Trichodesmium colonies
Original language description
Low iron (Fe) and phosphorus (P) ocean regions are often home to the globally important N-2-fixing cyanobacterium Trichodesmium spp., which are physiologically adapted to Fe/P co-limitation. Given Trichodesmium's eminent ability to capture particles and the common associations between Fe and P in sediments and aerosols, we hypothesized that mineral bio-dissolution by Trichodesmium spp. may enable them to co-acquire Fe and P. We present a new sensitive assay to determine P uptake from particles, utilizing P-33-labeled ferrihydrite. To validate the method, we examined single natural Trichodesmium thiebautii colonies in a high-resolution radiotracer ss-imager, identifying strong colony-mineral interactions, efficient removal of external P-33-labeled ferrihydrite, and elevated P-33 uptake in the colony core. Next, we determined bulk P uptake rates, comparing natural Red Sea colonies and P-limited Trichodesmium erythraeum cultures. Uptake rates by natural and cultured Trichodesmium were similar to P release rates from the mineral, suggesting tight coupling between dissolution and uptake. Finally, synthesizing P-ferrihydrite labeled with either P-33 or Fe-55, we probed for Fe/P co-extraction by common microbial mineral solubilization pathways. Dissolution rates of ferrihydrite were accelerated by exogenous superoxide and strong Fe-chelator and subsequently enhanced P-33 release and uptake by Trichodesmium. Our method and findings can facilitate further Fe/P co-acquisition studies and highlight the importance of biological mechanisms and microenvironments in controlling bioavailability and nutrient fluxes from particles.
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
10617 - Marine biology, freshwater biology, limnology
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Limnology and Oceanography
ISSN
0024-3590
e-ISSN
1939-5590
Volume of the periodical
68
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
14
Pages from-to
1064-1077
UT code for WoS article
000943788700001
EID of the result in the Scopus database
2-s2.0-85149622502