Fig. 1.

Phylogenetic and amino acid sequence analysis of OsMYB1. (A) Phylogenetic analysis of the R2R3-type MYB transcription factors from rice and selected counterparts in A. thaliana. The gene names are based on nomenclature suggested by Gray et al. (2009). The phylogenetic tree was generated using the MYB domain of the candidates. The gene names of four reported R2R3-type MYB transcription factors involved in Pi starvation signaling and OsMYB1 are highlighted in bold, and the clades to which these five members belong are highlighted in red, green, and blue. (B) Alignment of the MYB domains of OsMYB1 and reported R2R3-type MYB transcription factors involved in Pi starvation signaling.