Figure 1.

Overlapping expression of ONAC genes in response to various abiotic stress conditions. (A) Heat map of ONAC genes showing differential expression patterns under at least two abiotic stress conditions. The change values in treated samples vs. corresponding control, shown as (log₂ ^{(signal intensity in treatment/signal intensity in control)} = log₂^{signal intensity in treatment} − log₂^{signal intensity in control}), were used for Treeview (Supplementary file 2). The color scale of change values is shown at the bottom; (B) Venn diagram represents number of ONAC genes expressed commonly or specifically under given abiotic stress conditions (t-test p < 0.01); (C) Differential expression of 30 selected ONAC genes under drought, salt, and cold conditions, as analyzed by qPCR. Relative expression of each ONAC gene was calculated by comparison with corresponding control. Error bars represent standard errors of the means from three independent biological replicates.