Resumo

CHAVEZ GONZALEZ, José Daniel et al. Pantoea agglomerans isolated from producer surfactant pasture rhizosphere Tanzania and Llanero. Rev. Mex. Cienc. Agríc [online]. 2016, vol.7, n.4, pp.961-968. ISSN 2007-0934.

Pantoea agglomerans is a beneficial bacteria in various plants as it promotes plant growth, coupled with this only some strains can produce biosurfactants, these biosurfactants are capable of causing hemolysis on blood agar, foaming, dispersing the oil, reduce surface tension by the collapse of gout, emulsify hydrophobic compounds among others, these features make them interesting because they have various biotechnological applications, most notably, oil recovery, in the medical area, in the food industry and agriculture, in this last may be used for controlling phytopathogenic fungi, biosurfactants have different advantages, are compatible with the environment, tolerate high concentrations of NaCl, pH, temperature and are biodegradable, are produced by fungi, yeasts and bacteria, is why it is isolated and identified bacteria capable of producing biosurfactants in the rhizosphere of Tanzania (Panicum maximum) and Llanero (Andropogon gaynus Kunth) pastures in the Tecomate ranch in the state of Guerrero, samples a bacterial load in rhizosphere and root P. maximun was obtained of 1 x 103 a 10 x 104 and A. gaynus Kunth 5 x 103 to 21 x 104 UFC/g respectively, only 28 of these strains were able to produce hemolysis, foam collapse PPGAS drop and also present ability to emulsify diesel, gasoline, oil and vegetable oil, only five strains of P. maximun and eight of A. gaynus Kunth microbiological level were identified reporting the presence of first Pantoea aglomerans in association with the rhizosphere and root of pastures, these data serve as a basis to generate studies on its ecology and biological application to increase economic production of pastures in the state of Guerrero.

Palavras-chave : Pantoea aglomerans; biosurfactants; pastures.

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