RT Journal Article T1 Chemical interplay and complementary adaptative strategies toggle bacterial antagonism and co-existence. A1 Molina-Santiago, Carlos A1 Vela-Corcía, David A1 Petras, Daniel A1 Díaz-Martínez, Luis A1 Pérez-Lorente, Alicia Isabel A1 Sopeña-Torres, Sara A1 Pearson, John A1 Caraballo-Rodríguez, Andrés Mauricio A1 Dorrestein, Pieter C A1 de Vicente, Antonio A1 Romero, Diego K1 Bacillus K1 Pseudomonas K1 adaptation K1 antagonism K1 bacterial interactions K1 co-existence K1 evolution K1 secondary metabolites AB Bacterial communities are in a continuous adaptive and evolutionary race for survival. In this work we expand our knowledge on the chemical interplay and specific mutations that modulate the transition from antagonism to co-existence between two plant-beneficial bacteria, Pseudomonas chlororaphis PCL1606 and Bacillus amyloliquefaciens FZB42. We reveal that the bacteriostatic activity of bacillaene produced by Bacillus relies on an interaction with the protein elongation factor FusA of P. chlororaphis and how mutations in this protein lead to tolerance to bacillaene and other protein translation inhibitors. Additionally, we describe how the unspecific tolerance of B. amyloliquefaciens to antimicrobials associated with mutations in the glycerol kinase GlpK is provoked by a decrease of Bacillus cell membrane permeability, among other pleiotropic responses. We conclude that nutrient specialization and mutations in basic biological functions are bacterial adaptive dynamics that lead to the coexistence of two primary competitive bacterial species rather than their mutual eradication. YR 2021 FD 2021 LK http://hdl.handle.net/10668/18268 UL http://hdl.handle.net/10668/18268 LA en DS RISalud RD Apr 14, 2025