Journal of Bacteriology & Parasitology

Evaluation of Bacillus subtilis metabolites as plant growth promoters in Solanum lycopersicum

7^th World Congress on Microbiology

November 28-29, 2016 Valencia, Spain

Julia Cecilia Anguiano Cabello, Alberto Flores Olivas, Cristobal Noe Aguilar Gonzales and Arredondo Valdes Roberto

Universidad Autonoma Agraria Antonio Narro, Mexico
Universidad Autonoma de Coahuila, Mexico

Posters & Accepted Abstracts: J Bacteriol Parasitol

Abstract:

Soil microorganisms called plant growth-promoting rhizobacteria (PGPR) have beneficial effect in plants since they are able to produce plant hormones such as auxins, gibberellin, cytokinins, antibiotics and other compounds. Bacillus subtilis is categorized as a PGPR has antifungal activity and is auxin and siderophore producer. In the present research were evaluated fermentation broths of Bacillus subtilis by colorimetric and chromatographic techniques to determinate the production of plant growth-promoting metabolites and was evaluated the effect of the broths in Solanum lycopersicum plants and seeds. Results showed that fermentation broths of Bacillus subtilis presented auxin precursors, AIA, siderophores and jasmonic acid and they have effect in the germination time of seeds, plants length, root length and other agronomic parameters evaluated. BS8 broth presented the biggest concentration of 3-indolilacetonitrile and jasmonic acid (352.64±19.37 and 54.48 μg per mL), BS14 broth the highest concentration of AIA (147.80±3.03 μg/mL) and BSN broth of triptamine (605.54±39.60 μg/mL). All broths were positives for siderophores production. BS8 broth increases the germination rate of seeds. In plants length the best treatment was BS8 broth, then BS14 broth and finally BSN broth. Since every Bacillus subtilis has different concentration of the metabolites evaluated, the effect of each broth was different in the plants and seeds; this way is concluded that the effect of metabolites depends of the concentration and also of the combination with other plant growth-promoting metabolites.

Biography :

Email: julia_c922@hotmail.com