Phylogenetic analysis of the NBS domain was carried out by the neighbor-joining method using RGA sequences of domesticated and wild Malus species (green), Pyrus spp. (yellow), Prunus spp. (purple), Fragaria spp. (red), Rosa spp. (orange), and Rubus spp. (blue). Proteins present in contiguous positions of the tree are merged (collapsed branches are indicated by the + sign). Phylogentec tree indicates 49, three and one clades specific to Malus spp., Fragaria spp. and Rosa spp., respectively. Clades with RGAs of different genera: three clades of Malus spp. and Prunus spp.; seven clades of Malus spp. and Pyrus spp.; two clades of Malus spp. and Rubus spp.; four clades of Malus spp. and Rosa spp.; two clades of Fragaria spp. and Rosa spp.; two clades of Malus spp., Rosa spp., and Rubus spp.; three clades of Malus spp., Pyrus spp., and Rosa spp.; three clades of Malus spp., Prunus spp., and Rubus spp.; four clades of Malus spp., Prunus spp., Rosa spp., and Rubus spp.; three caldes of Malus spp., Prunus spp., Pyrus spp., Rosa spp., and Rubus spp.; two clades of Malus spp., Fragaria spp., Prunus spp., Rosa spp., and Rubus spp., one clade of Malus spp., Fragaria spp., Pyrus spp., Rosa spp., and Rubus spp.