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Título: | Collective sinking promotes selective cell pairing in planktonic pennate diatoms |
Autor: | Font-Muñoz, Joan S. CSIC ORCID; Jeanneret, Raphaël CSIC ORCID; Arrieta, Jorge CSIC ORCID; Anglès, Silvia CSIC ORCID; Jordi, Antoni CSIC ORCID; Tuval, Idan CSIC ORCID ; Basterretxea, Gotzon CSIC ORCID | Palabras clave: | diatoms Life cycle collective sinking |
Fecha de publicación: | 6-ago-2019 | Editor: | National Academy of Sciences (U.S.) | Citación: | Proceedings of the National Academy of Sciences of the USA 116(32): 15997-16002 (2019) | Resumen: | Finding a partner in an inherently unsteady 3-dimensional system, such as the planktonic marine environment, is a difficult task for nonswimming organisms with poor control over their orientation. We experimentally investigate the process of cell pairing in pennate marine diatoms and present field evidence of its occurrence in the ocean. We describe the mechanism as a 3-step process in which pennate diatoms (i) vertically reorient while sinking from surface turbulent waters to a more stable environment (i.e., under the seasonal pycnocline), (ii) segregate from incompatible partners (e.g., dead or different sized cells), and (iii) pair with other partners as a result of the hydrodynamic instabilities generated by collective cell sinking. This is, eminently, a cell abundance-dependent process, therefore being more effective when population sinking is synchronized. We suggest that this selective process, enabling matching of size-compatible healthy partners, could be fundamental in understanding sexual reproduction in pennate diatoms. | Versión del editor: | http://doi.org/10.1073/pnas.1904837116 | URI: | http://hdl.handle.net/10261/204534 | DOI: | 10.1073/pnas.1904837116 | Identificadores: | doi: 10.1073/pnas.1904837116 e-issn: 1091-6490 issn: 0027-8424 |
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Collective_sinking_selective_cell_pairing_planktonic.pdf | 2,02 MB | Adobe PDF | Visualizar/Abrir |
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