Rapeseed (Brassica napus L.) and soybean (Glycine max L.) seeds are rich in both protein and oil, which are major sources of biofuels and nutrition. Although the difference in seed oil content between soybean (~ 20%) and rapeseed (~ 40%) exists, little is known about its underlying molecular mechanism. | An integrated omics analysis reveals molecular mechanisms that are associated with differences in seed oil content between Glycine max and Brassica napus .den color inherit .ttnd ol .ttnd ul .ttnd dl padding 0 0px 0 20px .ttnd hr margin 10px 0px .ttnd a href javascript void 0 .ttnd a href color inherit dtextscript p text-align left dtextscript img vertical-align middle Zhang et al. BMC Plant Biology 2018 18 328 lt br gt https s12870-018-1542-8 lt br gt lt br gt lt br gt lt br gt lt br gt RESEARCH ARTICLE Open Access lt br gt lt br gt An integrated omics analysis reveals lt br gt molecular mechanisms that are associated lt br gt with differences in seed oil content lt br gt between Glycine max and Brassica napus lt br gt Zhibin Zhang1 2 Jim M. Dunwell3 and Yuan-Ming Zhang1 lt br gt lt br gt lt br gt Abstract lt br gt Background Rapeseed Brassica napus L. and soybean Glycine max L. seeds are rich in both protein and oil which lt br gt are major sources of biofuels and nutrition. Although the difference in seed oil content between soybean 20 and lt br gt rapeseed 40 exists little is known about its underlying molecular mechanism. lt br gt Results An integrated omics analysis was performed in soybean rapeseed Arabidopsis Arabidopsis thaliana L. Heynh lt br gt and sesame Sesamum indicum L. based on Arabidopsis acyl-lipid metabolism- and carbon metabolism-related genes. lt br gt As a result candidate genes and their transcription factors and microRNAs along with phylogenetic analysis and lt br gt co-expression network analysis of the PEPC gene family were found to be largely associated with the difference lt br gt between the two species. First three soybean genes and lt br gt co-expressed with GmPEPC1 are specifically enriched during seed storage protein accumulation stages while the lt br gt expression of BnPEPC1 is putatively inhibited by bna-miR169 and two genes BnSTKA and BnCKII are co-expressed lt br
