16s of root endosphere:C. oleifera
DNA for each sample was extracted with E.Z.N.A. Soil DNA Kit (Omega Bio-tek, Norcross, GA, USA), then V3-V4(335F-769R) of 16S rRNA was amplified by two-step PCR. Finally, the amplicons were sequenced on Illumina HiSeq 2500 platform.