Plant Growth-Promoting Rhizobacteria Isolated from Degraded Habitat Enhance Drought Tolerance of Acacia (Acacia abyssinica Hochst. ex Benth.) Seedlings

Table 4

Effect of temperature on the growth of selected PGPR isolates OD readings at 600 nm.

Isolates	Temp. 15°C	Temp. 25°C	Temp. 35°C	Temp. 40°C	Temp. 45°C
BS-27	0.30 ± 0.04^a	0.89 ± 0.07^ab	1.13 ± 0.04^abc	0.89 ± 0.14^abc	0.55 ± 0.05^b
FB-50	0.25 ± 0.07^abc	0.98 ± 0.11^ab	1.16 ± 0.02^abc	0.82 ± 0.15^bc	1.01 ± 0.09^a
RS-45	0.19 ± 0.04^abc	0.85 ± 0.17^ab	0.87 ± 0.05^bc	1.12 ± 0.02^abc	0.95 ± 0.11^a
FB-49	0.26 ± 0.05^ab	1.21 ± 0.14^a	1.36 ± 0.19^ab	1.10 ± 0.12^a	0.94 ± 0.14^a
RS-72	0.16 ± 0.01^bc	0.76 ± 0.05^b	1.05 ± 0.02^c	0.73 ± 0.03^c	0.29 ± 0.03^b
BS-19	0.22 ± 0.02^abc	0.93 ± 0.07^ab	1.39 ± 0.09^a	0.85 ± 0.07^abc	0.53 ± 0.05^b
RS-79	0.21 ± 0.04^abc	0.80 ± 0.13^b	1.29 ± 0.07^abc	0.73 ± 0.05^c	0.55 ± 0.03^b
PS-16	0.17 ± 0.02^abc	0.98 ± 0.09^ab	1.13 ± 0.07^abc	0.92 ± 0.10^abc	0.45 ± 0.07^b
BS-65	0.21 ± 0.03^abc	0.90 ± 0.11^ab	1.15 ± 0.09^abc	0.72 ± 0.09^c	0.54 ± 0.04^b
PS-2	0.12 ± 0.02^c	0.75 ± 0.06^b	1.14 ± 0.07^abc	1.07 ± 0.06^ab	0.47 ± 0.09^b

Means with the same letter down the column are not significantly different. Mean ± SD of three replicates using Duncan’s multiple range test () n = 3. Temp = temperature.