# OC Root 2nd 3rd 4th 5th 6th PC Gene/Definition OC.570752 Bacteria.957128 Proteobacteria.376868 Alphaproteobacteria.194784 Bradyrhizobium.19649 Bradyrhizobium_sp_.25326 brk.2289 brk:CWS35_11840 MarR family transcriptional regulator