Conditions that yield a repressive outcome when pivot is GLU and target is GS2: GLN_N and Starvation_N Carbon_N and NH4_N Carbon_N and NO3_N The following may give a strong repressive effect: Illumination_Y Starvation_N Organ_L Time_S Media_T Carbon_N NH4_N NO3_N GLN_N Experiments to clarify border between repressive and not Illumination_Y, Starvation_Y, Organ_L, Time_S, Media_T, Carbon_N, NH4_N, NO3_N, GLN_N Illumination_Y, Starvation_N, Organ_L, Time_S, Media_T, Carbon_Y, NH4_N, NO3_N, GLN_N =============================