Cloning and Functional Identification of the Two MYB Transcription Factors GmMYBJ6 and GmMYBJ7 in Soybean Construction of OsRUS 2.1 yeast two hybrid prey vectors and detection of their toxicity and self activated activity Varied Transcriptional Efficiencies of Multiple ArabidopsisU6 Small Nuclear RNA Genes Genome-wide Characterization of Long Terminal Repeat -retrotransposons in Apple Reveals the Differences in Heterogeneity and Copy Number between Ty1-copia and Ty3-gypsy Retrotransposons