Articles | Volume 17, issue 4
https://doi.org/10.5194/bg-17-995-2020
https://doi.org/10.5194/bg-17-995-2020
Research article
 | 
25 Feb 2020
Research article |  | 25 Feb 2020

SiR-actin-labelled granules in foraminifera: patterns, dynamics, and hypotheses

Jan Goleń, Jarosław Tyszka, Ulf Bickmeyer, and Jelle Bijma

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Cited articles

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Anderson, O. R. and Bé, A. W.: The ultrastructure of a planktonic foraminifer, Globigerinoides sacculifer (Brady), and its symbiotic dinoflagellates, J. Foramin. Res., 6, 1–21, https://doi.org/10.2113/gsjfr.6.1.1, 1976. 
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We studied the organisation and dynamics of actin in foraminifera. Actin is one of the key structural proteins in most lifeforms. Our investigations show that in foraminifera it forms small granules, around 1 µm in diameter, that display rapid movement. This granularity is unusual in comparison to other organisms. We suppose that these granules are most likely involved in the formation of all types of pseudopods responsible for movement, food capturing, biomineralisation, and other functions.
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