Contact-dependent iron uptake from dust revealed by elemental analysis of single Trichodesmium colonies
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F25%3A00640785" target="_blank" >RIV/60077344:_____/25:00640785 - isvavai.cz</a>
Alternative codes found
RIV/61388971:_____/25:00640785 RIV/60076658:12310/25:43910594
Result on the web
<a href="https://aslopubs.onlinelibrary.wiley.com/doi/10.1002/lno.70194" target="_blank" >https://aslopubs.onlinelibrary.wiley.com/doi/10.1002/lno.70194</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/lno.70194" target="_blank" >10.1002/lno.70194</a>
Alternative languages
Result language
angličtina
Original language name
Contact-dependent iron uptake from dust revealed by elemental analysis of single Trichodesmium colonies
Original language description
Aerosol dust deposited on the nutrient-deprived surface ocean can boost phytoplankton growth and oceanic carbon uptake. Low mineral solubility restricts the biological utilization of dust-nutrients, thereby benefiting phytoplankton that actively dissolve dust. The ubiquitous colony-forming, N2-fixing cyanobacteria Trichodesmium specialize in dust-nutrient utilization, with several dust-dissolution pathways identified in natural populations. Studying active dust dissolution by Trichodesmium, we surveyed the elemental composition (i.e., quotas) of natural colonies from the dust-impacted Red Sea using a benchtop micro-x-ray fluorescence imager. We also examined changes in the colonies' quotas during incubations with dust and nutrients. Accounting for inter-colony variability, we analyzed 106 individual colonies. Since particles often appeared on the surface of colonies, we carefully analyzed all images, removing dust particle signals from colony quotas. Focusing on the colonies' iron (Fe) and phosphorus (P) quotas, we observed contrasting patterns of inter-colony variability and responses to dust, likely reflecting distinct nutrient sources-Fe sourced from dust and P sourced from the dissolved phase. Iron uptake from dust was repeatedly observed, but only upon colony-mineral interactions, indicative of contact-dependent active dissolution. The role of dust in Fe nutrition was also evident from the minor impact of dissolved Fe complexation on Fe quotas. Phosphorus quotas responded rapidly to P addition or removal, but not to dust. Natural colonies collected over a season had heterogeneous Fe quotas but homogeneous P quotas, further supporting their distinct sources. Predictions of Trichodesmium's bloom dynamics in particle-rich and dust-impacted ocean environments should incorporate its ability to dissolve Fe-minerals.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10611 - Plant sciences, botany
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
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
70
Issue of the periodical within the volume
11
Country of publishing house
US - UNITED STATES
Number of pages
17
Pages from-to
155-3171
UT code for WoS article
001564533900001
EID of the result in the Scopus database
2-s2.0-105015463446