Characterization of the complete chloroplast genome sequence of Pennisetum glaucum and its phylogenetic implications

Pennisetum glaucum is a high nutritive-value summer-annual forage crop, popular among livestock producers for grazing, silage, hay, and green chop. In this study, the complete chloroplast genome of the P. glaucum was assembled from the whole genome Illumine sequencing data. The size of the P. glaucum chloroplast genome is 138,119 bp, including a large single-copy region (81,034 bp), a small single-copy region (12,409 bp), and a pair of inverted repeats regions (22,338 bp). The overall GC content of the P. glaucum chloroplast genome was 38.6%. The chloroplast genome of P. glaucum encodes 110 different genes, including 76 protein-coding genes, 30 transfer RNAs (tRNA), and four ribosomal RNAs (rRNA). Phylogenetic analysis confirmed a close relationship of P. glaucum with species in the Panicoideae subfamily of the Poaceae family.