The phylogenetic relationship of the OsGELP gene family. The unrooted tree was constructed based on multiple sequence alignment of the rice OsGELP protein sequences using ClustalW program by NJ method with 1,000 bootstrap replicates. Subclades are numbered at the right part of the tree and marked with different alternating tones of a background to make subclade identification easier. OsGELP genes that are in the same coloured boxes are segmental duplicated genes. Coloured dots indicate genes in tandem duplication. Vertical dashed black lines point out genes from genomic clusters. The node numbers lower than 50 are not shown.