Sequence analysis on rDNA-ITS region of germplasm resources from Dioscoreae Rhizoma Gene cloning of anthocyanin synthase in Fagopyrum dibotrys and correlation between its expression level and anthocyanin content Cloning and analysis of rDNA ITS sequences from 11 medicinal plants in Viola L. Molecular cloning, differential expression, and bioinformatics analysis of HMGR gene in Sambucus chinensis Gene cloning, sequence, and expression analysis of GpSS1 and its regulation by MeJA in Gynostemma pentaphyllum