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. 2016 Nov 7;7:1626. doi: 10.3389/fpls.2016.01626

Table 1.

In vitro antagonistic potential of pink pigmented facultative methylotrophic (PPFM) bacteria against plant pathogenic fungi and production of antimicrobial compounds.

Isolates Source Inhibition zone (cm) Siderophore (μg ml−1) Salicylic acid (μg ml−1) β-1,3-glucanase (μg of glucose released min−1 mg of protein−1) Chitinase (1 μmol of NAG released h−1 mg of protein−1)
F. oxysporum f. sp. lycopersici S. rolfsii P. ultimum R. solani
PPT-1 Tomato 2.05 ± 0.04b 2.04 ± 0.04b 2.02 ± 0.04b 2.08 ± 0.04b 27.45 ± 0.55a 88 ± 1.76a 278 ± 5.34b 4.95 ± 0.014a
PPN-1 Neem 1.85 ± 0.04d 1.64 ± 0.03f 1.12 ± 0.02k 1.38 ± 0.03i 20.54 ± 0.41d 71 ± 1.42de 118 ± 1.17i 3.89 ± 0.038d
PPB-1 Bhendi 1.95 ± 0.04c 1.94 ± 0.04c 1.92 ± 0.04c 1.98 ± 0.04c 25.44 ± 0.51b 87 ± 1.74a 265 ± 4.28c 4.80 ± 0.042a
PPBJ-1 Brinjal 1.75 ± 0.04e 1.14 ± 0.02k 1.42 ± 0.03h 1.68 ± 0.03f 23.19 ± 0.46c 77 ± 1.54b 178 ± 1.30f 3.39 ± 0.058e
PPG-1 Guava 1.25 ± 0.02j 1.54 ± 0.03g 1.82 ± 0.04d 1.48 ± 0.03h 18.45 ± 0.37f 61 ± 1.22i 140 ± 2.40h 3.86 ± 0.012d
PPL-1 Lime 1.65 ± 0.03f 1.24 ± 0.02j 1.52 ± 0.03g 1.18 ± 0.02k 20.02 ± 0.40de 70 ± 1.40ef 135 ± 2.18h 2.78 ± 0.038g
PPP-1 Prosophis 1.1 ± 0.02k 1.74 ± 0.03e 1.72 ± 0.03e 1.88 ± 0.04d 12.45 ± 0.25i 65 ± 1.30h 218 ± 4.54e 2.56 ± 0.052h
PPGR-1 Groundnut 1.55 ± 0.03g 1.44 ± 0.03h 1.22 ± 0.02j 1.58 ± 0.03g 17.32 ± 0.35g 73 ± 1.46cd 168 ± 3.15g 3.1 ± 0.023f
PPO-1 Onion 2.15 ± 0.04a 2.14 ± 0.04a 2.12 ± 0.04a 2.18 ± 0.04a 27.94 ± 0.56a 89 ± 1.78a 292 ± 3.65a 5.09 ± 0.111a
PPBO-1 Bougainvillea 1.45 ± 0.03h 1.84 ± 0.04d 1.32 ± 0.03i 1.78 ± 0.04e 17.45 ± 0.35g 68 ± 1.36g 186 ± 1.36f 3.50 ± 0.026e
PPPA-1 Parthenium 1.05 ± 0.02l 1.34 ± 0.03i 1.62 ± 0.03f 1.08 ± 0.02l 19.47 ± 0.39e 75 ± 1.50bc 234 ± 2.07d 4.2 ± 0.026c
PPGS-1 Grass 1.35 ± 0.03i 1.04 ± 0.02l 1.02 ± 0.02l 1.28 ± 0.03j 15.32 ± 0.31h 67 67 ± 1.34gh 224 ± 3.03e 4.5 ± 0.080b
LSD (P ≤ 0.05) 0.06 0.06 0.05 0.06 3.11 0.71 8.64 0.17

None of the isolates produced HCN under tested condition; values are mean of three replications ± SD (standard deviation). Values in each column followed by same letter (s) are not statistically different by LSD (P ≤ 0.05).