Biogenic AgNPs—A Nano Weapon against Bacterial Canker of Tomato (BCT)

Table 2

Antibacterial activity of AgNPs synthesized by the aqueous extract of P. oligandrum.

Indicator bacteria	AgNPs	AgNPs	AgNPs	Streptomycin	AgNO3
	0.088 mg/L/disk	0.176 mg/L/disk	0.44 mg/L/disk	0.44 mg/L	0.44 mg/L
(1) Cmm	1.10 ± 0.10	1.14 ± 0.10	1.15 ± 0.10	1.16 ± 0.13	0.86 ± 0.08
(2) B. sub	0.86 ± 0.08	0.96 ± 0.10	0.98 ± 0.13	1.16 ± 0.13	0.86 ± 0.08
(3) Ag. tf	1.06 ± 0.03	1.10 ± 0.08	1.10 ± 0.00	1.25 ± 0.10	0.86 ± 0.08
(4) X. cmp	1.03 ± 0.13	1.03 ± 0.10	1.03 ± 0.11	1.36 ± 0.10	0.86 ± 0.08
(5) E. coli	0.96 ± 0.10	1.06 ± 0.10	1.06 ± 0.08	1.13 ± 0.11	0.86 ± 0.08
(6) Stp. Slv	1.13 ± 0.10	1.16 ± 0.10	1.16 ± 0.03	1.26 ± 0.10	0.86 ± 0.08

Note: zone of inhibition was measured in mm after incubation period of 24 h at 29°C in Agar medium and each value represents the average of three replicates. ± Values are the standard error. Cmm = Clavibacter michiganensis subsp. michiganensis, B. sub = Bacillus subtilis subsp. subtilis, Ag. tf = Agrobacterium tumefaciens subsp. tumefaciens, X. cmp = Xanthomonas campestris subsp. campestris, E. coli = Escherichia coli, Stp. Slv = Streptococcus thermophilus subsp. salivarius, S.E. = standard error, SN = silver nitrate.