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Functional Integration and Individuality in Prokaryotic Collective Organisations

Militello, Guglielmo and Bich, Leonardo and Moreno, Alvaro (2020) Functional Integration and Individuality in Prokaryotic Collective Organisations. Acta Biotheoretica. ISSN 0001-5342

Militello Bich Moreno (2020) Functional integration and individuality in prokaryotic collective organisations.pdf

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Both physiological and evolutionary criteria of biological individuality are underpinned by the idea that an individual is a functionally integrated whole. However, a precise account of functional integration has not been provided so far, and current notions are not developed in the details, especially in the case of composite systems. To address this issue, this paper focuses on the organisational dimension of two representative associations of prokaryotes: biofilms and the endosymbiosis between prokaryotes. Some critical voices have been raised against the thesis that biofilms are biological individuals. Nevertheless, it has not been investigated which structural and functional obstacles may prevent them from being fully integrated physiological or evolutionary units. By contrast, the endosymbiotic association of different species of prokaryotes has the potential for achieving a different type of physiological integration based on a common boundary and interlocked functions. This type of association had made it possible, under specific conditions, to evolve endosymbionts into fully integrated organelles. This paper therefore has three aims: first, to analyse the organisational conditions and the physiological mechanisms that enable integration in prokaryotic associations; second, to discuss the organisational differences between biofilms and prokaryotic endosymbiosis and the types of integration they achieve; finally, to provide a more precise account of functional integration based on these case studies.

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Item Type: Published Article or Volume
Militello, Guglielmoguglielmo.militello@ehu.eus0000-0003-2657-3977
Bich, Leonardoleonardo.bich@ehu.es0000-0002-2416-112X
Moreno, Alvaroalvaro.moreno@ehu.eus0000-0002-2612-8403
Keywords: Biofilm; Control; Endosymbiosis; Engulfment; Eukaryogenesis; Regulation.
Subjects: Specific Sciences > Biology
Depositing User: Dr. Leonardo Bich
Date Deposited: 23 Aug 2020 03:39
Last Modified: 23 Aug 2020 03:39
Item ID: 18012
Journal or Publication Title: Acta Biotheoretica
Publisher: Springer
Official URL:
DOI or Unique Handle: 0.1007/s10441-020-09390-z
Subjects: Specific Sciences > Biology
Date: 21 August 2020
ISSN: 0001-5342

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