Figure 1.

Phylogenetic relationship of CAX family genes of Oryza sativa and Arabidopsis thaliana. The phylogenetic tree was constructed based on sequence alignment of CAX homologs from Arabidopsis (At) and rice (Os), using the neighbor-joining method with bootstrapping analysis implemented in MEGA 7.0. The CAX proteins are clustered into two groups (Type IA and Type IB). Gene structures were drawn, using Gene Structure Display Server 2.0 with genomic sequences and CDS sequences. Introns and exons are represented by black lines and yellow boxes, respectively. Blue boxes represent UTRs.