Contact-dependent iron uptake from dust revealed by elemental analysis of single Trichodesmium colonies
Identifikátory výsledku
Kód výsledku v 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>
Nalezeny alternativní kódy
RIV/61388971:_____/25:00640785 RIV/60076658:12310/25:43910594
Výsledek na webu
<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>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Contact-dependent iron uptake from dust revealed by elemental analysis of single Trichodesmium colonies
Popis výsledku v původním jazyce
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.
Název v anglickém jazyce
Contact-dependent iron uptake from dust revealed by elemental analysis of single Trichodesmium colonies
Popis výsledku anglicky
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.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10611 - Plant sciences, botany
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2025
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Limnology and Oceanography
ISSN
0024-3590
e-ISSN
1939-5590
Svazek periodika
70
Číslo periodika v rámci svazku
11
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
17
Strana od-do
155-3171
Kód UT WoS článku
001564533900001
EID výsledku v databázi Scopus
2-s2.0-105015463446