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 , and that perturbations in the GA signalling pathway have larger effects on the dynamics of components of the BR signalling pathway than perturbations in the BR signalling pathway on the dynamics of the GA pathway. The perturbation in the crosstalk mechanism also has a larger effect on the dynamics of the BR pathway than of the GA pathway. Large changes in the dynamics of the GA signalling processes can be observed only in the case where there are disturbances in both the BR signalling pathway and the crosstalk mechanism .