0557997 - MBÚ 2023 RIV US eng J - Journal Article
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
Institutional support: RVO:61388971
Keywords : north-atlantic * phosphorus * iron * phytoplankton * nitrogen * limitation * solubility * deposition * fixation * stress
OECD category: Microbiology
Impact factor: 5.8, year: 2022 ; AIS: 1.655, rok: 2022
Method of publishing: Open access
Result website:
https://www.sciencedirect.com/science/article/pii/S2589004221015571?via%3DihubDOI: https://doi.org/10.1016/j.isci.2021.103587

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.
Permanent Link: http://hdl.handle.net/11104/0331991