Abstract

HERNANDEZ-FORTE, Ionel  and  NAPOLES-GARCIA, María C.. Effect of different carbon sources on the growth of a rhizobia strain. cultrop [online]. 2018, vol.39, n.3, pp. 87-90. ISSN 1819-4087.

Knowledge of the nutritional needs of rhizobia is important for understanding their behavior in the rhizosphere and in the biofertilizers production. The objective of this research was to determine the effect of different carbon sources on the growth of a rhizobium isolate. On five carbon sources Rhizobium sp. S11 was grown. Its growth was determinated by optical density (OD) measuring and the specific growth rate (μ). The highest growth of Rhizobium sp. S11 was obtained on the medium with mannitol. The highest μ were obtained in the media with mannitol, glucose and glycerol. These studies are the basis for a better understanding of the Rhizobium sp. S11 behavior in the rhizosphere. It also provides tools for the design and optimization of culture media to increase the viability and concentration of this microorganism in future inoculants

Keywords : characterization; Rhizobium; multiplication; carbohydrates.

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