Bacterial community analysis associated to rhizosphere plant species of Miconia zamorensis and Erato polymnoides in heavy metals polluted soils

Abstract

Polluted ecosystems has severaL microorganisms such as bacteria can improve biomass production and tolerance to heavy metals and stress condition . In this context, the present study is focus in the identification and comparison of the bacterial communities associated to vegetal species (i.e. Miconia zamorensis and Erato polymnoides). The bacterial isolates were obtained from rhizosphere of polluted heavy metal soils. Molecular analysis was based on the amplification of a partial region of 16S rRNA. The phylogenetic analysis reveal that the isolated microorganisms belong to three genera: Bacillus, Lysinibacillus and Serratia, members of PGPR (plant growth promoting rhizobacteria) bacteria. This information contribute to the knowledge bacterial fraction cultivable, in the future the information can be used in bioremediation projects.