Survival of native Pseudomonas in soil and wheat rhizosphere and antagonist activity against plant pathogenic fungi.

Survival of Pseudomonas sp. SF4c and Pseudomonas sp. SF10b (two plant-growth-promoting bacteria isolated from wheat rhizosphere) was investigated in microcosms.

Biocontrol and PGPR features in native strains isolated from saline soils of Argentina.

A bacterial collection of approximately one thousand native strains, isolated from saline soils of Cordoba province (Argentina), was established. From this collection, a screening to identify those strains showing plant growth promotion and biocontrol activities, as well as salt tolerance, was performed. Eight native strains tolerant to 1 M: NaCl and displaying plant growth promotion and/or biocontrol features were selected for further characterization.

Effect of root exudates on the exopolysaccharide composition and the lipopolysaccharide profile of Azospirillum brasilense Cd under saline stress.

The effect of wheat root exudates on the exopolysaccharide (EPS) composition and the lipopolysaccharide (LPS) profile of Azospirillum brasilense Cd under saline stress was studied. EPS of A. brasilense Cd was composed of glucose (47%), mannose (3%), xylose (4%), fucose (28%), rhamnose (6%), arabinose (1%) and galactose (11%).