Chain formation in diatoms is relevant because of several aspects of their adaptation to the ecosystem. However, the tools to quantify the regulation of their assemblage and infer specific mechanisms in a laboratory setting are scarce. To address this problem, we define an approach based on a statistical physics model of chain growth and separation in combination with experimental evaluation of chain-length distributions. Applying this combined analysis to data from Chaetoceros decipiens and Phaeodactylum tricornutum, we find that cells of the first species control chain separation, likely through a cell-to-cell communication process, while the second species only modulates the separation rate. These results promote quantitative methods for characterizing chain formation in several chain-forming species and in diatoms in particular.

Regulation of chain length in two diatoms as a growth-fragmentation process / M. Gherardi, A. Amato, J. Bouly, S. Cheminant, M.I. Ferrante, M.R. D'Alcalá, D. Iudicone, A. Falciatore, M. Cosentino Lagomarsino. - In: PHYSICAL REVIEW. E. - ISSN 2470-0045. - 94:2(2016), pp. 022418.1-022418.8. [10.1103/PhysRevE.94.022418]

Regulation of chain length in two diatoms as a growth-fragmentation process

M. Gherardi;A. Amato;M. Cosentino Lagomarsino
2016

Abstract

Chain formation in diatoms is relevant because of several aspects of their adaptation to the ecosystem. However, the tools to quantify the regulation of their assemblage and infer specific mechanisms in a laboratory setting are scarce. To address this problem, we define an approach based on a statistical physics model of chain growth and separation in combination with experimental evaluation of chain-length distributions. Applying this combined analysis to data from Chaetoceros decipiens and Phaeodactylum tricornutum, we find that cells of the first species control chain separation, likely through a cell-to-cell communication process, while the second species only modulates the separation rate. These results promote quantitative methods for characterizing chain formation in several chain-forming species and in diatoms in particular.
Statistical and Nonlinear Physics; Statistics and Probability; Condensed Matter Physics
Settore FIS/02 - Fisica Teorica, Modelli e Metodi Matematici
Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin)
2016
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/562632
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