# OC Root 2nd 3rd 4th 5th 6th PC Gene/Definition OC.40636 Bacteria.973106 Proteobacteria.397961 Alphaproteobacteria.225560 Mesorhizobium.10068 Mesorhizobium_sp_.2347 meso.2197 meso:BSQ44_11335 hypothetical protein; K02031 peptide/nickel transport system ATP-binding protein