show Abstracthide AbstractIt was shown in the expression database that Pvtb1 genes in switchgrass expressed highly in axillary buds (Panicum virgatum v1.0, DOE-JGI, http://phytozome.jgi.doe.gov/). Thus, we extracted RNAs from axillary buds of tillers. The mutant 52-1 with highly enhanced tiller production and the WT plant (WT-1) generated from the same callus line from which the mutant 52-1 was obtained were chosen for mRNA-seq. RNA-seq analysis revealed a complex regulatory network potentially regulating tillering in switchgrass and provided some clues to the pathways of Pvtb1 genes.