Macrocystis pyriferaALGA EXTRACT IMPROVES IN VITRO SURVIVAL OF PGPRs BACTERIA

IPARRAGUIRRE, JULIA; MASCIARELLI, OSCAR; BONANCEA, SERGIO; VILLASUSO, ANA LAURA; LUNA, MARÍA VIRGINIA

BIOCELL

BIOCELL

Lugar: Mendoza; Año: 2015

Application technology of bacterial inoculants on seeds is a practice that has been used in the productive sector for about 20 years. On the other hand, they have long been sold on the market as a natural extract of algae that can provide multiple benefits, including improved inoculation technique, preserving the viability and the overall physiological state of microorganisms to incorporate into the soil, using the virtues of both towards ecological and sustainable agriculture. Our objective was to evaluate in vitro microorganism survival in Macrocystis pyrifera algae extract (AE) as a precedent for the subsequent study of the bacterial recovery and use of seedextract in a mixed inoculation with PGPR. Bacterial inocula of strains Az39 and E109 in combination with four doses of AE were placed in test tubes.Survival of each strainwas evaluated three times at 0, 9 and 28 days after the combination. Results showed that Az39 survival was enhanced in combination with low doses of A Eunlike E109, whose survival increased with the concentration of the extract. The results indicate that the extract of the alga Macrocystis pyriferais a product with high technological potential that could replace the products that are used today as protective / bacterial adhesives for application to seeds.