Effects of N-starvation and C-source on Bradyrhizobium japonicum exopolysaccharide production and composition, and bacterial infectivity to soybean roots. - Quelas, Juan; López-García, Silvina; Casabuono, Adriana; Althabegoiti, M.; Mongiardini, Elías; Pérez-Giménez, Julieta; Couto, Alicia; Lodeiro, Aníbal (Archives of Microbiology, 2006)