Pseudomonas spp. isolates with high phosphate-mobilizing potential and root colonization properties from agricultural bulk soils under no-till management in Argentina

FERNANDEZ L; AGARAS, B; ZALBA, P; WALL LG; VALVERDE C

Workshop; 9th International and 1st Latinamerican PGPR Workshop; 2012

Seven phosphate-mobilizing pseudomonads were isolated, identified and characterized in terms of their biofertilizer potential and root-colonizing properties. Pseudomonas protegens (ex-fluorescens) CHA0 was used for comparison. Four isolates clustered with members of the ?P. fluorescens complex? and the other with members of the ?P. putida/P. aeruginosa complex?. Assays in buffered liquid growth medium supplemented with tricalcium phosphate separated isolates into: group A, which solubilized P from 151 up to 182 µgmL-1 and group B that solubilized