Before revision:  Our results for the crosstalk model suggest that the interaction between transcription factors  exerts more influence on the dynamics of the signalling pathways , and that perturbations in the GA signalling pathway have larger effects on the dynamics of components of the BR signalling pathway , apart from in the case when the model for the BR signalling pathway has periodic solutions .
After revision:  Our results for the crosstalk model suggest that the interaction between transcription factors exerts more influence on the dynamics of the signalling pathways than BZR-mediated biosynthesis of GA, suggesting that the interaction between transcription factors may constitute the principal mechanism of the crosstalk between the BR and GA signalling pathways. In general, perturbations in the GA signalling pathway have larger effects on the dynamics of components of the BR signalling pathway , apart from in the case when the model for the BR signalling pathway has periodic solutions .