Mathematical model of auxin metabolism in meristem cells of plant shoots
2009
Akberdin, I.R. | Kazantsev, V.F. | Omelyanchiyuk, N.A., Russian Academy of Sciences. Siberian Branch, Novosibirsk (Russian Federation). Institute of Cytology and Genetics | Likhoshvaj, V.A., Novosibirsk State Agrarian Univ. (Russian Federation)
Indole-3-acetic acid (IAA) is physiologically active in the form of the free acid, but can also be found in conjugated forms in plant tissues. IAA can be degraded and redundant pathways lead to its synthesis. Auxin participates in regulation of cell differentiation in development of embryo, leaves, vascular tissue, fruit, primary and lateral root and in controlling apical dominance and tropisms. The regulation of the IAA metabolism (synthesis, conjugation and degradations) is an enough complex processand may explain in some aspects how this simple substance is able to influence such diverse processes. Mathematical modeling of IAA metabolic gene network veal the main factors governing this complex process. To reach this aim, we first reconstructed a gene network of auxin biosynthesis, conjugation degradation by annotating experimental data from 107 published papers in GeneNet computer system. This gene network after reduction was input into converter to generate the mathematical model of auxin metabolism. We have reconstructed the gene network and develop the mathematical model of auxin metabolism in Arabidopsis shoots. The model allows to reproduce some phenomenological and molecular-genetic aspects of the auxin role in the plant development
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