Conditions that yield a repressive outcome when pivot is Starvation and target is GS2: Carbon_N and Illumination_N Illumination_N and NH4_Y Illumination_N and NO3_Y GLU_N and Illumination_N GLN_Y and Illumination_N Carbon_N and NH4_Y Carbon_N and NO3_Y GLN_Y and GLU_N The following may give a strong repressive effect: Illumination_N Organ_L Time_S Media_T Carbon_N NH4_Y NO3_Y GLU_N GLN_Y Experiments to clarify border between repressive and not Illumination_Y, Organ_L, Time_S, Media_T, Carbon_N, NH4_Y, NO3_Y, GLU_N, GLN_Y Illumination_N, Organ_L, Time_S, Media_T, Carbon_Y, NH4_Y, NO3_Y, GLU_N, GLN_Y Illumination_N, Organ_L, Time_S, Media_T, Carbon_N, NH4_Y, NO3_Y, GLU_Y, GLN_Y Illumination_Y, Organ_L, Time_S, Media_T, Carbon_N, NH4_Y, NO3_Y, GLU_N, GLN_Y Illumination_N, Organ_L, Time_S, Media_T, Carbon_Y, NH4_Y, NO3_Y, GLU_N, GLN_Y Illumination_N, Organ_L, Time_S, Media_T, Carbon_N, NH4_Y, NO3_Y, GLU_N, GLN_N =============================