Transcription patterns of stress-regulated genes in the maize PR, CR and SR.

<p>(A) The total number of genes regulated by salinity stress in the three types of root. (B) Cluster analysis of salinity-regulated genes. Red indicates that the gene has a higher expression level in the salt-treated samples; green indicates that the gene has a lower expression in the salt-treated samples, and gray indicates that the gene has no expression in at least one sample. (C) The number of genes responding to salinity stress in each root type.