Relative GI-tract survival of <i>L. plantarum</i> mutants overexpressing genes potentially involved in GI-tract survival.

<p>Log₁₀ CFU ml⁻¹ determination of mid-exponentially grown in batch <i>L. plantarum</i> mutants after 60 min gastric juice incubation (white bars) and subsequent 60 min pancreatic juice incubation (grey bars). Input is set at 0 Log₁₀ CFU ml⁻¹. Empty vectors are pSIP411 (A) and pNZ7021 (B). <i>L. plantarum</i> harboring pNZ3430 (over<i>-lp_1357</i>), pNZ3431 (over<i>-hicD3</i>), pNZ3432 (over<i>-thrC</i>+<i>lp_2759</i>), pNZ3433 (over<i>-lp_0148∼0150</i>), and pNZ7026 (over<i>-lp_3294∼3299</i>). Data presented is the average of technical sextuplicates (+ standard deviation).