Critical periods as fundamental events in life.

Theory in Biosciences = Theorie in Den Biowissenschaften
G N Amzallag

Abstract

Development is not a continuous phenomenon. Rather, phenophases are interspaced with short critical periods. This phenomenon reflects an alternance between stabilization (during a phenophase) and dismantling (during a critical period) of a network of between-organ relationships generating the organism. Networks of relationships may be compared to dissipative systems in physics. In this context, a critical period represents a transient phase of isolation of the systems enabling its evolution towards equilibrium. As suggested here, this transition from dissipative to isolated system represents the source of newly emerging dissipative structures in which environmental or developmental perturbations are adaptively integrated. In contrast to non-living systems, an endogenous control of the transition towards critical period seems to exist during development. By extension to other scales of biological organization, it is suggested that the capacity to self-define its status (dissipative or close-to-equilibrium) represents the key property of living systems. This asks for a reconsideration of some basic notions about life, such as the role of genes in normal development, in physiological adaptation, and even in the emergence of evolut...Continue Reading

References

Feb 1, 1991·Scientific American·W J Freeman
Jan 1, 1990·Bio Systems·M Conrad
Aug 18, 1972·Nature·R M May
Jun 1, 1966·The Quarterly Review of Biology·A G Cock
Mar 1, 1970·Journal of Theoretical Biology·E F Keller, L A Segel
Jan 1, 1980·Differentiation; Research in Biological Diversity·A Goldbeter, L A Segel
Jul 22, 1998·BioEssays : News and Reviews in Molecular, Cellular and Developmental Biology·D ThieffryJ Collado-Vides
Mar 31, 1999·Trends in Genetics : TIG·H H McAdams, A Arkin
Jan 29, 2000·International Journal of Plant Sciences·H S Callahan, D M Waller
Apr 25, 2001·Physiologia Plantarum·Jeannette M. Arteca, Richard N. Arteca
Mar 2, 2002·Science·Eric H DavidsonHamid Bolouri
May 25, 2002·Science·Călin C GuetStanislas Leibler
Aug 31, 2002·Science·E RavaszA L Barabási
Jan 13, 1950·Science·L VON BERTALANFFY
May 1, 1995·Trends in Ecology & Evolution·S ViaP H Van Tienderen

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Citations

Apr 1, 2011·Journal of Biosciences·Yongsheng LiuXiuju Li
Jun 1, 2006·Advances in Genetics·Yongsheng Liu

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