Table 3 The relative abundances of rhizobacteria at the genus level in the rhizosphere of soybean grown in the soil organic C (SOC)-poor and SOC-rich soils with different rates of N addition.

From: Rhizobacterial community structure in response to nitrogen addition varied between two Mollisols differing in soil organic carbon

Phylum	Genus	SOC-poor soil			SOC-rich soil			ANOVA (Q values)
Phylum	Genus	0 mg N kg⁻¹	25 mg N kg⁻¹	100 mg N kg⁻¹	0 mg N kg⁻¹	25 mg N kg⁻¹	100 mg N kg⁻¹	LSD_0.05	N	Soil	N× Soil
Proteobacteria	Sphingomonas	4.30 ± 0.28	2.99 ± 1.88	2.53 ± 1.19	1.06 ± 0.31	1.46 ± 0.13	1.55 ± 0.47	1.68	0.539	0.004	0.401
	Burkholderia	1.97 ± 1.10	1.19 ± 0.34	0.82 ± 0.67	0.15 ± 0.04	0.53 ± 0.23	0.09 ± 0.03	0.98	0.256	0.004	0.428
	Nitrosomonadaceae_uncultured	2.48 ± 0.53	1.36 ± 0.80	1.62 ± 0.42	4.49 ± 0.51	2.54 ± 0.86	2.39 ± 0.42	1.09	0.004	<0.001	0.457
	Ramlibacter	1.80 ± 0.41	0.59 ± 0.37	1.19 ± 0.12	1.76 ± 0.23	1.73 ± 0.19	4.30 ± 1.08	1.58	0.014	0.045	0.046
	Pseudolabrys	1.41 ± 0.26	1.24 ± 0.71	1.07 ± 0.20	0.39 ± 0.08	1.13 ± 0.17	1.07 ± 0.22	0.61	0.427	0.055	0.048
	Phenylobacterium	0.97 ± 0.07	1.17 ± 0.80	1.55 ± 0.15	0.64 ± 0.09	0.68 ± 0.05	0.99 ± 0.41	0.67	0.181	0.039	0.929
	Rhodopseudomonas	1.07 ± 0.22	0.77 ± 0.18	0.74 ± 0.24	0.64 ± 0.02	0.44 ± 0.29	0.46 ± 0.08	0.35	0.113	0.009	0.927
	Haliangium	1.09 ± 0.27	0.85 ± 0.55	0.79 ± 0.09	0.62 ± 0.13	0.52 ± 0.15	0.47 ± 0.14	0.49	0.424	0.024	0.929
	Mesorhizobium	0.67 ± 0.09	0.67 ± 0.14	0.69 ± 0.15	0.14 ± 0.05	0.38 ± 0.18	0.32 ± 0.11	0.23	0.324	<0.001	0.550
	Azospirillum	0.25 ± 0.39	0.18 ± 0.30	1.98 ± 0.66	0.10 ± 0.06	0.03 ± 0.03	0.71 ± 0.29	0.63	<0.001	0.016	0.046
	Novosphingobium	0.63 ± 0.11	0.39 ± 0.56	0.81 ± 0.24	0.38 ± 0.11	0.23 ± 0.10	0.98 ± 0.13	0.47	0.018	0.576	0.635
	Rhizomicrobium	0.64 ± 0.06	0.51 ± 0.18	0.29 ± 0.14	0.25 ± 0.07	0.35 ± 0.09	0.11 ± 0.05	0.19	<0.001	<0.001	0.428
	Aquincola	1.81 ± 1.24	1.68 ± 2.70	11.1 ± 3.02	0.99 ± 0.27	0.11 ± 0.12	3.27 ± 1.46	3.26	<0.001	0.006	0.025
	Comamonadaceae_unclassified	0.92 ± 0.43	0.83 ± 0.47	2.09 ± 0.83	0.98 ± 0.11	0.79 ± 0.30	3.05 ± 0.73	0.95	<0.001	0.274	0.457
	Rhodanobacter	0.46 ± 0.12	0.80 ± 0.31	0.82 ± 0.23	0.40 ± 0.13	0.28 ± 0.14	0.27 ± 0.13	0.34	0.540	0.004	0.080
	Rhizobium	0.41 ± 0.13	0.11 ± 0.06	1.22 ± 0.68	0.31 ± 0.06	0.13 ± 0.08	0.65 ± 0.16	0.53	0.004	0.195	0.457
	JG34-KF-161_norank	0.58 ± 0.12	0.61 ± 0.14	0.57 ± 0.28	1.11 ± 0.25	0.94 ± 0.57	1.15 ± 0.28	0.55	0.869	0.014	0.916
	Microvirga	0.47 ± 0.03	0.31 ± 0.14	0.29 ± 0.16	0.33 ± 0.07	0.66 ± 0.15	0.86 ± 0.30	0.29	0.262	0.012	0.025
	Caulobacteraceae_uncultured	0.43 ± 0.02	0.31 ± 0.18	0.62 ± 0.21	0.54 ± 0.08	0.27 ± 0.01	0.45 ± 0.08	0.22	0.023	0.576	0.428
	DA111_norank	0.43 ± 0.01	0.52 ± 0.11	0.23 ± 0.13	0.20 ± 0.08	0.16 ± 0.05	0.16 ± 0.04	0.15	0.043	<0.001	0.046
	Sphingomonadaceae_unclassified	0.42 ± 0.03	0.11 ± 0.16	0.53 ± 0.18	0.16 ± 0.02	0.03 ± 0.02	0.36 ± 0.08	0.18	<0.001	0.012	0.623
	AKYH478_norank	0.47 ± 0.30	1.02 ± 0.12	0.35 ± 0.11	0.66 ± 0.21	0.61 ± 0.33	0.84 ± 0.11	0.39	0.199	0.464	0.025
	Hyphomicrobium	0.25 ± 0.14	0.14 ± 0.10	0.12 ± 0.02	0.00 ± 0.01	0.04 ± 0.02	0.01 ± 0.01	0.13	0.427	<0.001	0.457
	TRA3-20_norank	0.30 ± 0.07	0.38 ± 0.05	0.19 ± 0.13	0.47 ± 0.19	0.43 ± 0.19	0.22 ± 0.03	0.22	0.054	0.252	0.805
	Myxococcales_uncultured	0.36 ± 0.04	0.16 ± 0.09	0.20 ± 0.03	0.41 ± 0.13	0.24 ± 0.05	0.44 ± 0.08	0.14	0.014	0.014	0.387
Acidobacteria	Subgroup_6_norank	4.91 ± 1.20	1.76 ± 0.39	1.76 ± 0.48	4.21 ± 0.50	2.24 ± 1.08	2.36 ± 1.98	1.95	0.007	0.826	0.753
	Acidobacteriaceae_(Subgroup_1)_uncultured	2.09 ± 0.48	0.99 ± 0.26	1.14 ± 0.40	0.72 ± 0.24	0.50 ± 0.32	0.34 ± 0.18	0.59	0.014	<0.001	0.360
	RB41_norank	1.98 ± 0.36	1.01 ± 0.17	0.46 ± 0.19	2.63 ± 0.34	1.07 ± 0.76	1.01 ± 0.99	0.99	<0.001	0.184	0.831
	Blastocatella	1.56 ± 0.34	0.65 ± 0.06	0.76 ± 0.22	0.89 ± 0.27	0.49 ± 0.28	0.65 ± 0.46	0.53	0.014	0.067	0.457
	ABS-19_norank	0.86 ± 0.25	1.39 ± 0.27	0.61 ± 0.18	0.40 ± 0.21	0.57 ± 0.11	0.30 ± 0.06	0.34	0.007	<0.001	0.360
	Telmatobacter	0.41 ± 0.35	0.20 ± 0.09	0.22 ± 0.10	0.01 ± 0.01	0.00 ± 0.00	0.00 ± 0.00	0.27	0.472	0.006	0.713
	Subgroup_4_norank	0.38 ± 0.03	0.11 ± 0.04	0.10 ± 0.07	0.43 ± 0.15	0.25 ± 0.11	0.25 ± 0.18	0.20	0.014	0.073	0.884
	Granulicella	0.20 ± 0.13	0.17 ± 0.04	0.12 ± 0.07	0.03 ± 0.03	0.01 ± 0.02	0.00 ± 0.00	0.11	0.423	<0.001	0.923
	Candidatus_Koribacter	0.28 ± 0.05	0.15 ± 0.01	0.19 ± 0.05	0.07 ± 0.02	0.04 ± 0.02	0.07 ± 0.01	0.06	0.012	<0.001	0.048
Actinobacteria	Streptomyces	4.44 ± 1.41	15.5 ± 1.10	2.64 ± 0.44	1.29 ± 0.77	1.39 ± 0.34	3.02 ± 0.37	8.08	0.125	0.039	0.048
	Gaiellales_uncultured	1.91 ± 0.13	2.12 ± 0.49	1.17 ± 0.31	3.71 ± 0.54	4.83 ± 1.32	3.26 ± 0.54	1.19	0.040	<0.001	0.728
	Arthrobacter	1.28 ± 0.17	0.57 ± 0.15	1.11 ± 0.34	3.13 ± 0.47	2.05 ± 0.31	2.21 ± 0.26	0.04	<0.001	0.542	0.956
	Actinoplanes	0.79 ± 0.11	0.93 ± 0.22	0.45 ± 0.14	0.26 ± 0.07	0.18 ± 0.12	0.15 ± 0.09	0.24	0.025	<0.001	0.048
	Acidimicrobiales_uncultured	0.83 ± 0.07	0.84 ± 0.15	0.42 ± 0.23	1.20 ± 0.13	1.03 ± 0.39	0.79 ± 0.23	0.40	0.035	0.023	0.895
	Blastococcus	0.58 ± 0.04	0.83 ± 0.23	1.00 ± 0.30	0.67 ± 0.08	0.90 ± 0.51	1.33 ± 0.32	0.52	0.044	0.313	0.887
	Patulibacter	0.27 ± 0.11	0.58 ± 0.09	0.15 ± 0.07	0.38 ± 0.25	1.37 ± 0.22	0.00 ± 0.00	0.27	<0.001	0.011	0.001
	Streptosporangiaceae_norank	0.23 ± 0.19	0.11 ± 0.08	0.22 ± 0.12	0.01 ± 0.02	0.02 ± 0.03	0.03 ± 0.02	0.18	0.524	0.011	0.728
	Gaiella	0.13 ± 0.01	0.20 ± 0.04	0.11 ± 0.03	0.81 ± 0.06	0.80 ± 0.22	0.53 ± 0.04	0.30	<0.001	0.221	0.678
	Microlunatus	0.35 ± 0.04	0.22 ± 0.07	0.18 ± 0.05	0.78 ± 0.15	0.74 ± 0.43	0.75 ± 0.16	0.36	0.693	<0.001	0.929
Bacteroidetes	Flavisolibacter	0.94 ± 0.14	0.74 ± 0.32	0.73 ± 0.13	0.61 ± 0.11	0.86 ± 0.21	1.01 ± 0.11	0.33	0.693	0.845	0.048
	Niastella	0.65 ± 0.13	0.17 ± 0.07	0.86 ± 0.33	0.69 ± 0.46	0.30 ± 0.14	2.47 ± 1.31	1.05	0.012	0.075	0.069
Candidate_division_TM7	Candidate_division_TM7_norank	0.44 ± 0.32	0.28 ± 0.11	0.20 ± 0.08	2.62 ± 1.21	13.6 ± 2.91	0.01 ± 0.01	3.99	<0.001	<0.001	0.001
Chloroflexi	KD4-96_norank	1.59 ± 0.43	0.83 ± 0.06	1.48 ± 0.76	2.87 ± 0.13	1.62 ± 0.78	1.51 ± 0.73	1.01	0.044	0.039	0.450
	Roseiflexus	0.50 ± 0.04	0.23 ± 0.02	0.27 ± 0.06	0.76 ± 0.04	0.42 ± 0.11	0.66 ± 0.13	0.24	<0.001	0.014	0.680
	TK10_norank	1.35 ± 0.21	1.08 ± 0.08	0.65 ± 0.23	1.08 ± 0.13	0.90 ± 0.44	0.73 ± 0.03	0.41	0.016	0.313	0.671
	Anaerolineaceae_uncultured	1.55 ± 0.50	0.69 ± 0.20	0.76 ± 0.30	2.20 ± 0.86	1.40 ± 0.25	1.26 ± 0.66	0.92	0.040	0.043	0.956
	C0119_norank	0.91 ± 0.07	0.57 ± 0.05	0.43 ± 0.05	0.54 ± 0.11	0.48 ± 0.14	0.40 ± 0.06	0.15	<0.001	0.004	0.025
Cyanobacteria	Cyanobacteria_norank	0.36 ± 0.29	0.22 ± 0.07	4.86 ± 3.29	0.32 ± 0.20	0.28 ± 0.16	1.76 ± 1.65	2.69	0.014	0.223	0.428
Firmicutes	Asteroleplasma	0.30 ± 0.17	2.78 ± 0.98	0.38 ± 0.09	0.04 ± 0.04	0.14 ± 0.21	0.00 ± 0.00	0.74	<0.001	<0.001	0.001
Gemmatimonadetes	Gemmatimonas	0.38 ± 0.16	0.30 ± 0.01	0.19 ± 0.05	0.54 ± 0.27	0.97 ± 0.46	0.57 ± 0.07	0.41	0.229	0.009	0.450
Nitrospirae	Nitrospira	0.47 ± 0.14	0.13 ± 0.02	0.11 ± 0.06	0.62 ± 0.15	0.29 ± 0.13	0.28 ± 0.07	0.19	<0.001	0.014	0.986
Verrucomicrobia	DA101_soil_group_norank	0.49 ± 0.38	0.17 ± 0.05	0.16 ± 0.03	1.77 ± 0.43	1.05 ± 0.96	1.37 ± 1.42	1.31	0.524	0.014	0.929
WCHB1-60	WCHB1-60_norank	1.46 ± 0.60	1.83 ± 1.20	0.29 ± 0.09	0.19 ± 0.17	0.96 ± 0.61	0.04 ± 0.01	1.08	0.028	0.029	0.623

Genera with abundance above 0.3% and significance (Q < 0.05) on one of main effects, i.e. N and soil, or their interaction were presented. Values are means ± standard error (n = 3). Q values less than 0.05 were indicated in bold letters. The Q values indicate the p values have been corrected using False Discovery Rate.

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Table 3 The relative abundances of rhizobacteria at the genus level in the rhizosphere of soybean grown in the soil organic C (SOC)-poor and SOC-rich soils with different rates of N addition.

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