Phylogenetic tree of XETs from various plant species.

The tree was generated using the neighbor-joining method of the MEGA 7.0.12 program. GaXET (Gossypium arboretum, KHG12145.1), PtXET (Populus trichocarpa, XP-002297895.1), AdXET (Actinidia deliciosa, AAC09388.1), VvXET2 (Vitis vinifera, AAK81881.1), SIXET (Solanum lycopersicum, BAA03923.1), FcXTH1 (Fragaria chiloensis, ADE42488.1), RbXET (Rosa x borboniana, ABB86296.1), PpXET (Pyrus pyrifolia, ACA02823.1), PcXET1 (Pyrus communis, BAC58038.1), MdXET1 (Malus domestica, AAN07897.1), GmXET (Glycine max, BAA03922.1), PsEXGT1 (Pisum sativum, BAA34946.1), AcXET2 (Annona cherimola, ACK36946.1), AcXET1 (Annona cherimola, ACK36945.1), MdXET2 (Malus domestica, AAN07898.1), LcXET3 (Litchi chinensis, ABK30789.1), VvXET1 (Vitis vinifera, AAK81880.1), AtXET (Arabidopsis thaliana, CAA63553.1), BjXTH3 (Brassica juncea, AEX07607.1), TaXTH1 (Triticum aestivum, AAT94293.1) and ZaXTH1 (Zea mays, AAC49011.1).