The codes below indicate the tissues sequenced and time points of tissue sampling. Tissues were sampled from three ecotypes: MN98 (Minnesota), KS7 (Kansas), OK5 (Oklahoma). In the legumeinfo.org data store, the reads for each ecotype are in separate collections, per ecotype: KS7.tcp.X84J MN98.tcp.2CYW OK5.tcp.WDXM Age refers to the number of expanded leaves of the shoot tip from which RNA was isolated. 1=MN98 ecotype 2=Kansas ecotype 3=Oklahoma ecotype S=Shoot tissue R=Root tissue N=Nodule tissue Lower case letters refer to specific developmental time points. 1N_Rn nodule_and_root 1Nm nodule_whole 1No nodule_nonscen 1Np nodule_scen 1Rj root_tip 1Rk root_nonbranched 1Rl root_branched 1Sa shoot_tip_4d 1Sb shoot_tip_age2 1Sc shoot_tip_age4 1Sd shoot_tip_age6 1Se shoot_tip_age8 1Sf shoot_tip_age12_16 1Sg shoot_tip_age18_21 2Sh shoot_tip_age28_36_KS 3Si shoot_tip_age24_31_OK 1N_Rn.080709.fa nodule_and_root 1N_Rn.080725.fa nodule_and_root 1N_Rn.080811.fa nodule_and_root 1Nm.080714.fa nodule_whole 1Nm.080721.fa nodule_whole 1Nm.080822.fa nodule_whole 1Nm.080904.fa nodule_whole 1No.080705.fa nodule_nonscen 1No.080729.fa nodule_nonscen 1Np.080709.fa nodule_scen 1Np.080725.fa nodule_scen 1Np.080729.fa nodule_scen 1Np.080804.fa nodule_scen 1Rj.080709.fa root_tip 1Rj.080725.fa root_tip 1Rj.080729.fa root_tip 1Rj.080804.fa root_tip 1Rk.080705.fa root_nobranch 1Rk.080725.fa root_nobranch 1Rl.080714.fa root_branched 1Rl.080721.fa root_branched 1Rl.080822.fa root_branched 1Rl.080904.fa root_branched 1Sa.080714.fa shoot_tip_4d 1Sa.080721.fa shoot_tip_4d 1Sa.080729.fa shoot_tip_4d 1Sb.080705.fa shoot_tip_age2 1Sb.080725.fa shoot_tip_age2 1Sb.080729.fa shoot_tip_age2 1Sb.080822.fa shoot_tip_age2 1Sb.080904.fa shoot_tip_age2 1Sc.080705.fa shoot_tip_age4 1Sc.080729.fa shoot_tip_age4 1Sd.080714.fa shoot_tip_age6 1Sd.080721.fa shoot_tip_age6 1Sd.080822.fa shoot_tip_age6 1Sd.080904.fa shoot_tip_age6 1Se.080714.fa shoot_tip_age8 1Se.080721.fa shoot_tip_age8 1Se.080822.fa shoot_tip_age8 1Se.080904.fa shoot_tip_age8 1Sf.080714.fa shoot_tip_age12_16 1Sf.080721.fa shoot_tip_age12_16 1Sf.080729.fa shoot_tip_age12_16 1Sf.080822.fa shoot_tip_age12_16 1Sf.080904.fa shoot_tip_age12_16 1Sg.080714.fa shoot_tip_age18_21 1Sg.080721.fa shoot_tip_age18_21 1Sg.080811.fa shoot_tip_age18_21 2Sh.080709.fa shoot_tip_age28_36_KS 2Sh.080725.fa shoot_tip_age28_36_KS 2Sh.080811.fa shoot_tip_age28_36_KS 3Si.080709.fa shoot_tip_age24_31_OK 3Si.080725.fa shoot_tip_age24_31_OK 3Si.080811.fa shoot_tip_age24_31_OK