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. 2019 Feb 8;7:e6403. doi: 10.7717/peerj.6403

Figure 3. Rarefaction curves showing the amplicon sequencing depths in the maize and soybean root samples in this study.

Figure 3

The dashed lines show a minimum (25,116 sequences), mean (36,394 sequences) and median (36,857 sequences) number of obtained sequences in this study. The operational taxonomic units (OTUs) were compared across samples when samples were rarefied at 25,116 sequences.