Fig 1. Phylogenetic tree of coding nucleotide sequences of the phosphate transporter family 1 (PHT1) in Brassica napus, B. oleracea, B. rapa and Arabidopsis thaliana.

The phylogenetic tree was constructed by MEGA 5.1 with neighbor-joining method and 1000 replicates. The analysis involved 109 nucleotide sequences including 49 from B. napus (pink red rectangle), 28 from B. rapa (light blue triangle), 23 from B. oleracea (light yellow star) and nine from Arabidopsis (light green circle).