Fig. 1

Genome-wide identification of PvSPLs in switchgrass. a Phylogenetic relationship of SPLs. A maximum likelihood tree was constructed in PhyML version 3.0 on the basis of multiple alignments of SBP domain sequences from monocot species (switchgrass, foxtail millet, maize, sorghum, rice, and Brachypodium) and dicot species (Arabidopsis, citrus, cotton, grape, and poplar). Pvi switchgrass, Sit foxtail millet, Zma maize, Sbi sorghum, Osa rice, Bdi Brachypodium, Ath Arabidopsis, Ccl citrus, Ghi cotton, Vvi gape, and Ptr poplar. b Sequence alignment of miR156 mature sequences with complementary sequences of PvSPLs. The dots between miR156 and targeted PvSPL sequences indicate mismatches. c Chromosomal distribution of PvSPLs in the switchgrass genome