Research Article

The Flora Compositions of Nitrogen-Fixing Bacteria and the Differential Expression of nifH Gene in Pennisetum giganteum z.x.lin Roots

Figure 1

Venn diagram of operational taxonomic unit in 5 samples. The total OTUs (operational taxonomic units) of the 5 samples were 611, 683, 732, 712, and 584, respectively, and shared 82 identical OTUs. Note: (1) seedling stage, (2) tillering stage, (3) jointing stage, (4) maturation stage, and (5) dying stage.