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Colonies of the marine cyanobacterium Trichodesmium optimize dust utilization by selective collection and retention of nutrient-rich particles

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    0557997 - MBÚ 2023 RIV US eng J - Článek v odborném periodiku
    Wang, S. - Koedooder, C. - Zhang, F. - Kessler, N. - Eichner, Meri - Shi, D. - Shaked, Y.
    Colonies of the marine cyanobacterium Trichodesmium optimize dust utilization by selective collection and retention of nutrient-rich particles.
    iScience. Roč. 25, č. 1 (2022), č. článku 103587. E-ISSN 2589-0042
    Institucionální podpora: RVO:61388971
    Klíčová slova: north-atlantic * phosphorus * iron * phytoplankton * nitrogen * limitation * solubility * deposition * fixation * stress
    Obor OECD: Microbiology
    Impakt faktor: 6.107, rok: 2021
    Způsob publikování: Open access
    https://www.sciencedirect.com/science/article/pii/S2589004221015571?via%3Dihub

    Trichodesmium, a globally important, N-2-fixing, and colony-forming cyanobacterium, employs multiple pathways for acquiring nutrients from air-borne dust, including active dust collection. Once concentrated within the colony core, dust can supply Trichodesmium with nutrients. Recently, we reported a selectivity in particle collection enabling Trichodesmium to center iron-rich minerals and optimize its nutrient utilization. In this follow-up study we examined if colonies select Phosphorus (P) minerals. We incubated 1,200 Trichodesmium colonies from the Red Sea with P-free CaCO3, P-coated CaCO3, and dust, over an entire bloom season. These colonies preferably interacted, centered, and retained P-coated CaCO3 compared with P-free CaCO3. In both studies, Trichodesmium clearly favored dust over all other particles tested, whereas nutrient-free particles were barely collected or retained, indicating that the colonies sense the particle composition and preferably collect nutrient-rich particles. This unique ability contributes to Trichodesmium's current ecological success and may assist it to flourish in future warmer oceans.
    Trvalý link: http://hdl.handle.net/11104/0331991

     
     
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