Fig. 1

Identification of cold-responsive lncRNAs in M. truncatula seedlings. a: Numbers of common/specific lncRNAs identified in NT-L, CT-L, NT-R and CT-R. b: Total numbers of lncRNAs identified in leaves (NT, CT) and roots (NT, CT). Values shown in (a) and (b) were obtained from pooling data of three independent RNAseq experiments. Length distribution of lncRNAs in leaves (c) and roots (d). e: Numbers of lncRNAs containing different numbers of exon in NT-L, CT-L, NT-R and CT-R. f: Numbers of three type lncRNAs identified in NT-L, CT-L, NT-R and CT-R. Capital letters indicate a significant different at p < 0.05 according to t-test between three type lncRNAs in same treatment samples and small letters indicate a significant different at p < 0.05 according to t-test between NT-L, CT-L, NT-R and CT-R of same type lncRNAs. Values shown in (c), (d), (e) and (f) are means ± SE with three independent RNAseq experiments. Antisense-lncRNA: lncRNA overlapping with reference on the opposite strand; intronic-lncRNA: lncRNA falling entirely within a reference intron; incRNA: intergenic lncRNA; NT: non-cold treated; CT: cold treated; L: leaves; R: roots