Fig. 6

Expression of stress adaptation related genes. a, The typical ABA-dependent and independent signaling pathways responsive to drought stress. Red and blue ellipses indicate up-regulated and down-regulated genes identified by transcriptomes under drought stress, respectively. a was described by Mustilli et al. [22] and Yoshida et al. [23]. b, The expression pattern of representative genes allocated in above mentioned pathways. The expression levels were assessed by log2-transformed RPKM values. The A1-F6 indicates the relative soil moisture content (RSMC) of 33.4, 27.5, 21.1, 15.5, 9.8 and 4.8 %, respectively, and G7-I9 indicates the 2 h, 4 h and 8 h after water recovery from 4.8 % to 33.4 %, respectively. NCED, 9-cis-epoxycarotenoid dioxygenase; SnRK2, SNF1-related protein kinase 2; ABF, AREB/ABF, MYB/MYC, AP2/ERF, transcription factors, LEA, late embryogenesis abundant protein; DHN, dehydrin. The number below each gene indicates the member of each gene family