. 2020 Sep 24;10:15642. doi: 10.1038/s41598-020-72507-4

Table 2.

Biochemical characteristics of native strains isolated from rhizosphere and roots of tomato crop.

Strain	Catalase^†	Ammonia production^†	Cytochrome oxidase^†	Protease activity^†	CFU mL⁻¹ at different temperature of growing^‡			Plant hormone IAA (ng mL^–1)^‡
Strain	Catalase^†	Ammonia production^†	Cytochrome oxidase^†	Protease activity^†	4 °C	28 °C	40 °C	Plant hormone IAA (ng mL^–1)^‡
25X1	+	+	−	−	103 ± 4^b	159 ± 6^a	61 ± 6^c	100.6 ± 9.40^e
42P4	+	+	+	+	40 ± 8^c	97 ± 9^a	68 ± 7^b	482.4 ± 1.10^b
53F	+	+	+	+	246 ± 11^c	463 ± 13^a	275 ± 8^b	260.8 ± 25.10^d
60I1	+	+	−	−	36 ± 6^c	73 ± 9^a	54 ± 5^b	368.8 ± 74.90^c
64S1	+	+	−	+	63 ± 6^c	114 ± 12^a	83 ± 8^b	2,387.8 ± 28.10^a

^†(−) indicates absence of PGP trait; (+) indicates presence of PGP trait.

^‡Each value is a mean ± S.E. of three independent replicates (n = 3). Different letters indicate differences among isolates according to LSD Fisher test (P < 0.05).