Abstract

RIOS ROCAFULL, Yoania et al. Interaction of the bacteria Gluconacetobacter diazotrophicus and root vegetables. cultrop [online]. 2016, vol.37, suppl.1, pp. 28-32. ISSN 1819-4087.

Gluconacetobacter diazotrophicus is endophyte bacterium that have among its metabolic characteristics, direct and indirect mechanism for plant growth promotion. There are positive results by its application in graminious and tropical tubers. Nevertheless, in vegetable researches of this plant-microorganism interaction are few. The present work had the aim to evaluate the effect of the application over growth of carrot (Daucus carota L.) and beet (Beta vulgaris L.), of four G. diazotrophicus strains isolated of Cuban agriculture ecosystem. It was showed that microorganism habitat have not direct relation with vegetable species that could be beneficiated with the interaction, due to that the best result was obtained with the strain isolated of mango. This strain was selected as promissory as active principle of bioproduct with positive effect over both vegetables. Besides, this strain has more plant growth promoting effect than patron strain of the bacterium specie (PAL5), indicating the importance of indigenous microorganisms. Results suggest that G. diazotrophicus could be used in plan growth promotion of root vegetables like carrot and beet and it also shows the complexity of plant-microorganism interaction

Keywords : biofertilizer; growth; stimulation; nitrogen fixation; microrganism.

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