External stimuli may activate the stress response in Arabidopsis thaliana. The molecules which play important
roles in the stress response have been widely studied. However, the interactions, especially logic interactions, among these
molecules, need to be studied. In this paper, logic networks are constructed based on gene expression profiles of
Arabidopsis under the normal condition and four different stimuli conditions, respectively. It is found that the distribution
of different types of 2-order logics in the gene logic network under the normal condition is different from the others.
Furthermore, the logic networks of genes which play important roles are constructed and their dynamics are simulated. It
is then observed that the number of attractors in the logic network for Arabidopsis under the normal condition is less than
those under four external stimuli. It is also observed that the number of attractors with large attraction domain in the logic
network for Arabidopsis under the normal condition is greater than those under four external stimuli. The results show
that the distribution of different types of 2-order logics and the number of attractors clearly distinguish logic network
under the normal condition from those under external stimuli conditions. Our studies will provide the theoretical basis for
experimental studies on the stress response of Arabidopsis.
Keywords: Arabidopsis, gene network, high-order logic, network dynamics, network structure, systems biology, Clustering of Genes, intrinsic mechanisms, abscisic acid,
Rights & PermissionsPrintExport