RpoN (sigma54) controls production of antifungal compounds and biocontrol activity in Pseudomonas fluorescens CHA0. - Péchy-Tarr M; Bottiglieri M; Mathys S; Lejbølle KB; Schnider-Keel U; Maurhofer M; Keel C (Molecular plant-microbe interactions : MPMI, 2005)