| Reference : Active reconfiguration of cytoplasmic lipid droplets governs migration of nutrient-li... |
| Scientific journals : Article | |||
| Life sciences : Aquatic sciences & oceanology Life sciences : Environmental sciences & ecology Life sciences : Microbiology Physical, chemical, mathematical & earth Sciences : Multidisciplinary, general & others | |||
| Physics and Materials Science | |||
| http://hdl.handle.net/10993/52976 | |||
| Active reconfiguration of cytoplasmic lipid droplets governs migration of nutrient-limited phytoplankton | |
| English | |
Sengupta, Anupam  [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) >] | |
| Dhar, Jayabrata [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) >] | |
| Danza, Francesco [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >] | |
| Ghoshal, Arkajyoti [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) >] | |
| Müller, Elisabeth [University of Basel] | |
| Kakavand, Narges [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) >] | |
| 4-Nov-2022 | |
| Science Advances | |
| American Association for the Advancement of Science (AAAS) | |
| 8 | |
| 44 | |
| 1-16 | |
| Yes | |
| International | |
| 2375-2548 | |
| Washington | |
| United States - District of Columbia | |
| [en] active matter ; lipid droplets ; phytoplankton ; swimming ; morphology ; biophysics | |
| [en] Nutrient availability, along with light and temperature, drives marine primary production. The ability to migrate vertically, a critical trait of motile phytoplankton, allows species to optimize nutrient uptake, storage, and growth. However, this traditional view discounts the possibility that migration in nutrient-limited waters may be actively modulated by the emergence of energy-storing organelles. Here, we report that bloom-forming raphidophytes harness energy-storing cytoplasmic lipid droplets (LDs) to biomechanically regulate vertical migration in nutrient-limited settings. LDs grow and translocate directionally within the cytoplasm, steering strain-specific shifts in the speed, trajectory, and stability of swimming cells. Nutrient reincorporation restores their swimming traits, mediated by an active reconfiguration of LD size and coordinates. A mathematical model of cell mechanics establishes the mechanistic coupling between intracellular changes and emergent migratory behavior. Amenable to the associated photophysiology, LD-governed behavioral shift highlights an exquisite microbial strategy toward niche expansion and resource optimization in nutrient-limited oceans. | |
| Department of Physics and Materials Science | |
| Fonds National de la Recherche - FnR ; Human Frontier Science Program Cross-Disciplinary Fellowship ; Swiss National Science Foundation Mobility Grant | |
| Researchers ; Professionals ; Students ; General public ; Others | |
| http://hdl.handle.net/10993/52976 | |
| 10.1126/sciadv.abn6005 | |
| https://www.science.org/doi/10.1126/sciadv.abn6005 | |
| Creative Commons Attribution License 4.0 (CC BY) | |
| FnR ; FNR11572821 > Anupam Sengupta > MBRACE > Biophysics Of Microbial Adaptation To Fluctuations In The Environment > 15/05/2018 > 14/05/2023 > 2017 |
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