Growth Promotion of Maize Exposed to Arsenic and Mercury with a Consortia of Rhizosphere Bacteria Isolated from Mining Tailings.

ABSTRACT: In this study we evaluated plant growth promotion (PGP) traits of bacteria associated with maize (Zea mays L.) including Pseudomonas sp. (TL36), Staphylococcus sp. (TL49), Gottfriedia sp. (TL52), and Bacillus sp. (TL80), isolated from mining tailings, when exposed to mercury and arsenic. Initially, the response of the bacteria to the heavy metals studied were evaluated in in vitro assays, showing regular-moderate tolerance to arsenic and low tolerance to mercury. Also plant growth promotion traits of the bacteria were studied in in vitro assays in terms of production of indole-3-acetic acid (IAA), phosphate solubilization, siderophores and biofilm when exposed to arsenic and mercury. In addition, production of volatile organic compounds by the four bacteria were measured. In general, bacte

SUBMITTER: Rojas-Solis D 

PROVIDER: S-EPMC12325397 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature