. 2011 Jul;77(13):4579–4588. doi: 10.1128/AEM.00183-11

Table 2.

Contribution of PsoR to the suppression of Pythium damping-off disease of cucumber by Pseudomonas fluorescens CHA0 in natural soil^a

Bacterial strain added	Pythium added	Surviving plants per flask (%)	Fresh wt per flask (g)
Bacterial strain added	Pythium added	Surviving plants per flask (%)	Shoot	Root
None	−	100^A	1.64^B	0.41^B
CHA0	−	100^A	2.06^A	0.47^A
CHA0PSOR	−	100^A	1.94^A	0.44^AB
None	+	38^B	0.70^C	0.17^C
CHA0	+	92^A	1.80^AB	0.40^B
CHA0PSOR	+	100^A	1.90^A	0.42^B

The data represent the means from eight replicate flasks (each containing three cucumber plants) per treatment. Means within the same column followed by different superscript capital letters are significantly different (P ≤ 0.05) according to Fisher's protected LSD test. The experiment was repeated once with similar results. P. fluorescens strains were added at 10⁷ CFU per g of natural soil contained within 200-ml flasks (60 g of soil per flask), after planting three 90-h-old, sterile-grown cucumber seedlings per flask. P. ultimum was added (+) or not added (-) as a millet-seed inoculum to soil before planting. Plants were harvested after 7 days.