Szczegóły publikacji
Opis bibliograficzny
Form and function of F-actin during biomineralization revealed from live experiments on foraminifera / Jarosław Tyszka, Ulf Bickmeyer, Markus Raitzsch, Jelle Bijma, Karina Kaczmarek, Antje Mewes, Paweł TOPA, Max Janse // Proceedings of the National Academy of Sciences of the United States of America ; ISSN 0027-8424. — 2019 — vol. 116 no. 10, s. 4111–4116. — Bibliogr. s. 4116. — Publikacja dostępna online od: 2019-02-19
Autorzy (8)
- Tyszka Jarosław
- Bickmeyer Ulf
- Raitzsch Markus
- Bijma Jelle
- Kaczmarek Karina
- Mewes Antje
- AGHTopa Paweł
- Janse Max
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 120913 |
|---|---|
| Data dodania do BaDAP | 2019-05-29 |
| Tekst źródłowy | URL |
| DOI | 10.1073/pnas.1810394116 |
| Rok publikacji | 2019 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Proceedings of the National Academy of Sciences of the United States of America |
Abstract
Although the emergence of complex biomineralized forms has been investigated for over a century, still little is known on how single cells control morphology of skeletal structures, such as frustules, shells, spicules, or scales. We have run experiments on the shell formation in foraminifera, unicellular, mainly marine organisms that can build shells by successive additions of chambers. We used live imaging to discover that all stages of chamber/shell formation are controlled by dedicated actin-driven pseudopodial structures. Successive reorganization of an F-actin meshwork, associated with microtubular structures, is actively involved in formation of protective envelope, followed by dynamic scaffolding of chamber morphology. Then lamellar dynamic templates create a confined space and control mineralization separated from seawater. These observations exclude extracellular calcification assumed in selected foraminiferal clades, and instead suggest a semiintracellular biomineralization pattern known from other unicellular calcifying and silicifying organisms. These results give a challenging prospect to decipher the vital effect on geochemical proxies applied to paleoceanographic reconstructions. They have further implications for understanding multiscale complexity of biomineralization and show a prospect for material science applications.