Fig. 4

Cluster analysis of light-regulated miRNAs. Student’s t-test was performed to identify miRNAs with significant fold changes against dark (W0 h). The expression patterns of miRNAs in response to light treatments were classified into four clusters by use of k-mean clustering (by Euclidean distance). Gray lines indicate the average fold change of each miRNA from three biological replicates; red lines indicate average fold changes within the cluster