Transcriptomic Analysis of Differentially Expressed Genes in Arabidopsis thaliana Overexpressing BnMYB2 from Boehmeria nivea under Cadmium Stress

Boehmeria nivea (ramie) is an important fiber crop with strong tolerance to cadmium (Cd). In our previous study, a novel MYB transcription factor gene from ramie, BnMYB2, was found positively regulate Cd and accumulation in the transgenic Arabidopsis thaliana lines. Herein, transcriptome sequencing performed identify differentially expressed genes involved response between wild-type (WT) BnMYB2 overexpressed lines; 1598 (DEGs) were detected shoot. GO KEGG analysis indicated that majority of DEGs belonged categories factors, plant hormone signal transduction nitrogen metabolism. The expression level Ib subgroup bHLH (AtbHLH38, AtbHLH39, AtbHLH100 AtbHLH101) assimilation-related (AtNIA1, AtNIA2, AtNIR1 AtASN2) significantly higher than WT, accompanied positive changes iron (Fe) total content shoot overexpression Several belonging bZIP family or SAUR also up-regulated plants. These results provide clues for elucidating how molecular mechanisms stress.