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Ability of Halophile Bacteria to Capturesodium and Its Possible Application in Bioremediation of Saline-Sodic Soil
The inadequate agricultural practices have been the cause of the increase of saline-sodic soils in the entire planet. Its recovery has been done mainly changing sodium by another cation, generally calcium, remedying in mechanical form and using halotolerant plants. Although these practices control the problem to a certain extent, it has not been able to make an effective recovery in these soils. This work displays as an alternative, the use of bioremediation with halophiles bacteria. The objective of the investigation was to evaluate the capacity of five species of halophiles to capture in vitro sodium ions and to design a proposal for its possible application in bioremediation of sodic and saline soils. The capture of sodium was demonstrated by comparing the initial concentration of the sodium solution without inoculating and the concentration of the same one with the bacterium inoculated through the technique of spectroscopy of atomic absorption.
The bacteria that demonstrated the capacity to capture sodium in vitro were: Vibrio alginolyticus, Vibrio metschnikovii, Flavimonas oryzihabitans and Agrobacterium tumefasciens. Serratia marcescens did not demonstrate capture. The verification of the sodium capture allowed as to make two proposals: to design a bioreactor with a microbial partnership that includes the bacteria that captured sodium in the experiment and native bacteria in saline and sodic soils and to use genetic engineering to implant the gene of sodium bomb of the species with better capture in existing indigenous flora in this type of grounds.
