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Phylogenetic tree of P-ATPase genes in various cottons and Arabidopsis, constructed by neighbor-joining (NJ) using MEGA 5 software (1000 bootstrap replicates). Different colors indicate different subfamilies of P-ATPase, the green, orange, blue, red and purple dots indicate Arabidopsis, G. arboretum, G. raimondii, G. barbadense and G. hirsutum respectively.
