Screening and optimization of indole-3-acetic acid production and phosphate solubilization by rhizobacterial strains isolated from Acacia cyanophylla root nodules and their effects on its plant growth

Journal of Genetic Engineering and Biotechnology

Table 3 Effect of different carbon sources on the tricalcium phosphate solubilization by the tested rhizobacterial strains

Carbon source (1%)	*Agrobacterium* sp.		*Phyllobacterium* sp.			*Bacillus* sp.	*Rhizobium* sp.
Carbon source (1%)	Final pH	P₂O₅ liberated (μg ml^-1)	Final pH	P₂O₅ liberated (μg ml^-1)	Final pH	P₂O₅ liberatd (μg ml^-1)	Final pH	P₂O₅ liberated (μg ml^-1)
Glucose (control)	5.69 ± 0.16	488 ± 8.48	5.22 ± 0.02	576 ± 5.65	4.65 ± 0.04	782 ± 9.19	4.85 ± 0.04	684 ± 6.36
Fructose	6.23 ± 0.03	240 ± 5.65	6.22 ± 0.05	256 ± 6.36	5.78 ± 0.04	320 ± 10.6	6.65 ± 0.08	365 ± 12.02
Mannitol	6.60 ± 0.08	140 ± 10.6	6.76 ± 0.04	123 ± 9.19	6.18 ± 0.04	250 ± 7.07	6.22 ± 0.02	232 ± 5.65
Lactose	6.88 ± 0.22	92 ± 4.24	6.72 ± 0.66	124 ± 6.36	6.48 ± 0.09	174 ± 8.48	6.28 ± 0.04	256 ± 4.24
Inositol	6.55 ± 0.14	160 ± 4.24	6.86 ± 0.04	94 ± 5.65	6.91 ± 0.08	74 ± 9.89	6.88 ± 0.05	120 ± 10.60