Isolation and characterization of phosphate-solubilizing bacteria from rhizosphere of poplar on road verge and their antagonistic potential against various phytopathogens

Qingwei, Zeng; Lushi, Tang; Yu, Zhang; Yu, Shao; Wanting, Wu; Jiangchuan, Wang; Xiaolei, Ding; Xuejiao, Han; Bilal, Muhammad

doi:10.1186/s12866-023-02953-3

Table 2 Preliminary screening results of the PSB isolates

From: Isolation and characterization of phosphate-solubilizing bacteria from rhizosphere of poplar on road verge and their antagonistic potential against various phytopathogens

Mineral PSB isolates	Clear halo diameter / mm	Colony diameter / mm	Ratio R	Organic PSB isolates	Clear halo diameter / mm	Colony diameter / mm	Ratio R
Mp1-Ha1	13.9 ± 0.30	8.3 ± 0.42	1.67 ± 0.04^d	Op1-Ha1	13.2 ± 1.45	12.1 ± 0.39	1.09 ± 0.03^cde
Mp1-Ha3	14.9 ± 0.12	7.1 ± 0.53	2.11 ± 0.14^a	Op1-Ha2	9.8 ± 0.74	8.9 ± 0.41	1.10 ± 0.04^cde
Mp1-Ha4	10.1 ± 0.17	5.5 ± 0.26	1.84 ± 0.06^c	Op1-Ha3	23.8 ± 1.13	21.1 ± 0.95	1.13 ± 0.02^bcd
Mp1-Ha7	10.0 ± 0.17	4.9 ± 0.12	2.04 ± 0.02^ab	Op1-Ha4	13.3 ± 0.64	12.3 ± 0.63	1.08 ± 0.02^de
Mp1-Ha8	7.1 ± 0.51	4.6 ± 0.35	1.54 ± 0.01^e	Op2-Ha3	11.1 ± 0.63	10.5 ± 0.76	1.06 ± 0.05^e
Mp1-Ha10	10.0 ± 0.29	5.8 ± 0.37	1.72 ± 0.06^d	Op3-Ha3	9.4 ± 0.73	8.2 ± 0.95	1.15 ± 0.09^bc
Mp1-Ha11	10.5 ± 0.38	7.2 ± 0.15	1.46 ± 0.02^fg	Op3-Ha4	17.3 ± 0.98	15.3 ± 0.33	1.13 ± 0.07^cd
Mp1-Ha26	10.0 ± 0.40	8.0 ± 0.56	1.25 ± 0.04^j	Op3-Ha5	13.4 ± 1.52	11.2 ± 0.45	1.20 ± 0.03^ab
Mp1-Ha27	5.7 ± 0.37	5.7 ± 0.40	1.01 ± 0.01^L	Op3-Ha6	13.4 ± 0.63	12.5 ± 0.72	1.07 ± 0.01^de
Mp1-Ha32	9.8 ± 0.23	5.0 ± 0.17	1.96 ± 0.02^b	Op4-Ha2	10.6 ± 0.97	9.5 ± 0.56	1.12 ± 0.02^cd
Mp2-Ha4	6.3 ± 0.29	6.2 ± 0.31	1.01 ± 0.00^L	Op4-Ha3	15.7 ± 1.02	13.9 ± 0.64	1.13 ± 0.03^bcd
Mp2-Ha8	7.5 ± 0.13	5.8 ± 0.22	1.29 ± 0.02^ij	Op4-Ha4	16.7 ± 0.1.88	15.6 ± 0.95	1.07 ± 0.05^de
Mp2-Ha11	13.5 ± 0.32	8.1 ± 0.45	1.67 ± 0.05^d	Op4-Ha6	12.9 ± 1.68	10.3 ± 0.67	1.25 ± 0.03^a
Mp2-Ha20	12.3 ± 0.10	8.4 ± 0.14	1.46 ± 0.02^fg	Op4-Ha7	15.9 ± 0.98	14.3 ± 0.85	1.11 ± 0.03^cd
Mp2-Ha21	7.7 ± 0.28	5.7 ± 0.36	1.35 ± 0.04^hi
Mp3-Ha1	9.6 ± 0.40	6.6 ± 0.22	1.45 ± 0.01^fg
Mp4-Ha1	11.9 ± 0.38	8.4 ± 0.44	1.41 ± 0.03^gh
Mp4-Ha6	11.5 ± 0.17	7.6 ± 0.25	1.51 ± 0.03^ef
Mp4-Ha22	9.9 ± 0.33	8.0 ± 0.47	1.23 ± 0.03^jk
Mp4-Ha28	8.3 ± 0.19	6.6 ± 0.32	1.25 ± 0.03^j
Mp4-Ha30	7.4 ± 0.35	6.4 ± 0.21	1.16 ± 0.02^k

Data are means of three replicates ± S. D
Lowercase letters in the data of ratio R indicate significant differences at P < 0.05 level.

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