. 2017 Jan 24;8:12. doi: 10.3389/fmicb.2017.00012

Table 4.

Twenty key OTUs shaping the endosphere communities in O. digyna and S. oppositifolia in the three regions identified by SIMPER (Contributions of variables to similarity analysis).

OTU #	Endo vs. Rhizo	Plant species	Region	Phyla	Class	Order	Family	Genus	Species
OTU_21	0.97^*	1.71^*	1.69^*	Firmicutes	Clostridia	Clostridiales	Clostridiaceae	Clostridium
OTU_5	0.95^*	1.01^*	1.04^*	Firmicutes	Bacilli	Bacillales	Planococcaceae
OTU_2	0.93^*	1.73^*	1.87^*	Proteobacteria	α-proteobacteria	Rhizobiales	Bradyrhizobiaceae	Bradyrhizobium
OTU_3	0.81^*	1.59^*	1.68^*	Proteobacteria	δ-proteobacteria	Myxococcales	Haliangiaceae
OTU_15	0.73^*	1.28^*	1.20^*	Actinobacteria	Actinobacteria	Actinomycetales	Micrococcaceae	Kocuria
OTU_8	0.71^*	1.52^*	1.79^*	Proteobacteria	β-proteobacteria	Burkholderiales	Oxalobacteraceae	Janthinobacterium	lividum
OTU_33	0.65^*	0.99^*	0.97^*	Actinobacteria	Actinobacteria	Actinomycetales	Micromonosporaceae
OTU_4	0.62^*	1.43^*	1.24^*	Proteobacteria	β -proteobacteria	Burkholderiales	Comamonadaceae
OTU_706	0.62^*	1.43^*	1.25^*	Bacteroidetes	Saprospirae	Saprospirales	Chitinophagaceae
OTU_13	0.53^*	1.12^*	1.24^*	Proteobacteria	β -proteobacteria	Burkholderiales	Comamonadaceae	Methylibium
OTU_84	0.5^*	0.99^*	1.17^*	Proteobacteria	β -proteobacteria	Burkholderiales	Comamonadaceae	Limnohabitans
OTU_48	0.4	0.69^*	0.78^*	Proteobacteria	γ-proteobacteria	Pseudomonadales	Pseudomonadaceae	Pseudomonas
OTU_16	0.37	0.65^*	0.63	Proteobacteria	α -proteobacteria	Rhizobiales	Hyphomicrobiaceae	Rhodoplanes
OTU_22	0.37	0.74^*	0.79^*	Proteobacteria	β -proteobacteria	Burkholderiales	Comamonadaceae
OTU_36	0.37	0.92^*	0.72^*	Actinobacteria	Actinobacteria	Actinomycetales
OTU_23	0.29	0.71^*	0.59	Proteobacteria	γ -proteobacteria	Xanthomonadales	Sinobacteraceae	Steroidobacter
OTU_26	0.28	0.64^*	0.62	Proteobacteria	Un_Proteobacteria
OTU_41	0.27	0.56^*	0.51	Proteobacteria	γ -proteobacteria	Xanthomonadales	Sinobacteraceae
OTU_37	0.26	0.71^*	0.54	Proteobacteria	α -proteobacteria	Rhizobiales	Hyphomicrobiaceae
OTU_83	0.26	0.59^*	0.47	Actinobacteria	Acidimicrobiia	Acidimicrobiales

Numerical values indicate % contribution of the respective OTUs in determining the difference in community composition between endosphere and rhizosphere, between O. digyna and S. oppositifolia and between the three regions.

indicate the top 20 OTUs strongly contributing to the differences in community structures between the compartments, plant species and geographic regions. OTUs which are also part of tightly associated OTUs were highlighted by bold letters in the OTU # column.