Intrahost passage alters SigB-dependent acid resistance and host cell-associated kinetics of Listeria monocytogenes

► Intrahost passage alters acid resistance and cell-associated kinetics of Listeria monocytogenes. ► The altered phenotypes link to the SigB activity. ► Themutation in rsbWlocus (a regulator for SigB protein) is assumed to be a major cause for the phenotypic alterations.