Figure 4

Phylogenetic analysis of cotton Sus genes and other plant Sus homologs. Unrooted phylogenetic tree of plant Sus proteins constructed using the neighbor-joining method with MEGA 5.0 program. Isozymes and corresponding plant species are: cotton, GaSus1 to 7 (this study); Potato, StSus1 to 4 [9]; Pea, PeaSus1 to 3 [13]; Wheat, TaSus1 and TaSus2 [15]; Arabidopsis thaliana, AtSus1 to 6 [23]; Rice, OsSus1 to 6 [24]; Lotus japonicus, LjSus1 to 6 [25]; Citrus, CitSus1, CitSus2 and CitSusA [29]; Bamboo, BoSus1 to 4 [37]; Tomato, LeSus1 and LeSus2 [38]; Carrot, DcSus1 and DcSus2 [39]; Maize, ZmSh1, ZmSus1 and ZmSus3 [40]; Barley, HvSus1 and HvSus2 [41]; Sugarbeet, SbSS1 [42]; Sorghum, SbSus2 (accession no. FJ513325); Sugarcane, SoSus2 (accession no. AY118266); Populus, PtSus1 to 7 [43].