Root-associated endophytic bacterial community composition and structure of three medicinal licorices and their changes with the growing year

Table 4 Spearman correlation analyses testing the relationship between the relative abundance of dominant bacterial phyla in the root of licorice and bioactive compounds, soil physicochemical properties and leaf nutrition

	Proteobacteria	Actinobacteria	Bacteroidetes	Firmicutes	Unidentified-Bacteria	Chlamydiae	Tenericutes	Acidobacteria	Verrucomicrobia	Planctomycetes
SOM	0.098	−0.219	−0.096	−0.190	−0.253	−0.167	−0.305	−0.246	0.092	−0.332
STN	0.242	−0.358	−0.004	−0.178	−0.236	−0.207	− 0.131	−0.252	− 0.020	−0.155
STP	−0.024	−0.236	0.209	0.099	−0.129	0.125	0.165	−0.319	−0.070	− 0.033
STK	−0.220	0.087	0.216	0.091	−0.127	0.060	−0.225	0.111	0.256	−0.116
SNN	0.075	0.154	−0.137	−0.005	− 0.128	−0.241	0.292	0.128	−0.355	−0.026
SAN	0.073	−0.455*	0.250	0.138	0.223	0.107	0.067	−0.068	0.208	−0.222
TS	0.034	0.274	−0.228	0.045	−0.195	−0.276	0.311	0.214	−0.289	0.211
PWC	−0.088	0.111	0.020	0.173	−0.270	−0.094	0.047	0.038	−0.204	−0.046
POC	−0.178	0.016	0.181	0.354	−0.290	−0.225	0.074	0.434*	0.077	0.151
PTN	−0.499**	0.291	0.187	0.430*	0.236	0.008	0.339	0.263	0.066	0.184
PTP	0.022	0.122	−0.134	0.090	−0.162	− 0.177	0.238	0.130	−0.199	0.188
PTK	−0.202	0.218	−0.010	0.267	−0.339	−0.172	0.279	0.117	−0.186	0.214
CF	−0.330	0.206	0.095	0.408*	−0.054	0.170	0.343	0.121	−0.022	0.212
GlA	0.358	−0.463*	0.049	−0.274	0.185	0.040	−0.097	−0.204	− 0.012	−0.100
GTF	0.168	−0.354	0.031	−0.241	0.248	0.083	−0.038	−0.165	0.221	−0.070
LI	0.331	−0.458*	0.079	−0.242	0.189	0.074	−0.111	−0.218	0.037	−0.109

Description: the values are the correlation coefficients. ** means P < 0.01; * means P < 0.05

ISSN: 1471-2180