Bioaugmentation with copper tolerant endophyte Pseudomonas lurida strain EOO26 for improved plant growth and copper phytoremediation by Helianthus annuus

Organic fertilizers became a better alternative to chemical in modern agricultural practices however, contamination of copper (Cu) from organic fertilizer is still major concern for the globe. Plant growth promoting (PGP) microorganisms showed their efficiency combat with this problem and thus Cu tolerant PGP endophytes roots Odontarrhena obovata (Alyssum obovatum) growing on smelter contaminated serpentine soil were explored present study. Out twenty-four isolates, Pseudomonas lurida strain EOO26 identified by 16s rRNA gene sequencing was selected check its efficacy Cu-remediation. The multi-metal tolerance, drought resistance exhibited attributes such as 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase, siderophore ammonia production. Significant production indole-3-acetic phosphate-solubilization under different concentration (0–100 mg L?1) at varying pH (5.0–8.0) suggests potentiality work effectively wide range abiotic stress conditions. experiment (pH 6.8 ± 0.3) spiked suggested significant increase length dry weight root shoot sunflower (Helianthus annuus) after inoculation EOO26. Plants inoculated resulted uptake 8.6-fold 1.9-fold leaves than uninoculated plants. total plant treatment 2.6-fold higher one, which much previously reported accumulating excellent adaptation abilities promising metal removal strongly indicate superiority phytoremediation Cu-contamination may soils.