Skip to main content
. 2016 Nov 17;7:1838. doi: 10.3389/fmicb.2016.01838

FIGURE 4.

FIGURE 4

Volatile organic compounds-mediated stimulation of A. thaliana tolerance to salinity. Root growth, rosette diameter and fresh weight were measured for A. thaliana col-0 plants inoculated with P. phytofirmans (PsJN), non-inoculated (N.I), or exposed to volatile emissions from live PsJN (PsJN-VOCs) or a heat-killed inoculum (HK-PsJN-VOCs) (see Materials and Methods). Plants were transferred at 11 DAS to fresh MS1/2 agar with no added NaCl or CaCl2 (0 NaCl/0 CaCl2) as untreated controls (A, upper row; B left panel), or MS1/2 agar with 150/15 mM NaCl/CaCl2 (A, lower row; B right panel). Growth parameters were registered at 21 DAS. Bars show mean percentage values relative to N. I. plants, and the error bars indicate standard deviations from experiments with 30 plants analyzed for each bacterium and salt treatment. Different letters indicate statistically significant differences among bacterial treatments within each salt concentration for each measured parameter (One way ANOVA Tukey’s HSD tests; p < 0.05).