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Prog. Theor. Phys. Vol. 100 No. 2 (1998) pp. 235-251

A Model of Organization of Size Invariant Positional Information in Taxis of Physarum Plasmodium

— A Reaction-Diffusion System Regulated by Phase
of Chemical Oscillation —

Haruki Miura and Masafumi Yano

Research Institute of Electrical Communication, Tohoku University
Sendai 980-8577, Japan

(Received April 16, 1998)

Abstract:

It is assumed that positional information within a developing organism is represented by a morphogen gradient. However, it is not yet understood how positional information is organized in a size invariant manner. To achieve such size invariance, it is necessary for an organism to organize the polarity of positional information in advance. We focus on tactic behavior of the Physarum plasmodium and propose a model that describes the organization of size invariant positional information, in which the direction of the phase wave represents the polarity. We would like to point out that self-referential dynamics exist in our model, and their implementation is discussed. Our model may be applied to other developmental systems.

URL : http://ptp.ipap.jp/link?PTP/100/235/
DOI : 10.1143/PTP.100.235

[ Full Text PDF : FREE ACCESS (884K) ] Citation: Plain Text BiBTeX EndNote(RIS) RSS

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