Biochemical, Catabolic, and PGP Activity of Microbial Communities and Bacterial Strains from the Root Zone of in a Mediterranean Mine Tailing

Overview

Journal Microorganisms

Specialty Microbiology

Date 2023 Nov 25

PMID 38004650

Authors

Humberto Aponte

Yoelvis Sulbaran-Bracho

Pedro Mondaca

Catalina Vidal

Rodrigo Perez

Sebastian Meier

Pablo Cornejo

Claudia Rojas

Affiliations

Soon will be listed here.

Abstract

The management of mine tailings (MT) is commonly workload heavy, intrusive, and expensive. Phytostabilization offers a promising approach for MT management; however, it poses challenges due to the unfavorable physicochemical properties of these wastes. Nevertheless, native microorganisms capable of supporting plant growth and development could enhance the efficacy of phytostabilization. This study assesses the biological activity of microbial communities from the root zone of , which is naturally present in MT, in order to evaluate their biotechnological potential for phytostabilization. The root zone and bulk samples were collected from plants located within a MT in the Mediterranean zone of Chile. Enzyme activities related to the cycling of C, N, and P were assessed. The community-level physiological profile was evaluated using the MicroResp system. Bacterial plant growth-promoting (PGP) traits and colony forming units (CFU) were evaluated through qualitative and microbiological methods, respectively. CFU, enzyme activities, and CLPP were higher in the root zone compared with the bulk samples. Five bacterial strains from the root zone exhibited PGP traits such as P solubilization and N acquisition, among others. The presence of microbial communities in the root zone of with PGP traits suggests their potential to enhance the ecological management of MT through phytostabilization programs.

Citing Articles

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