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The issue of dye disposal into the environment has received considerable critical attention. Therefore, this study aims to investigate the biodegradation and detoxification of Solvent Green 3 (SG3) by halophilic Hortaea sp. For toxicity examination, SG3 (before and after degradation) was inspected against two plants, which are Sorghum vulgare and Triticum aestivum. The maximum specific growth rate of the bacterium was 0.13 h⁻¹. The fastest duration for the complete removal of the dye and chemical oxygen demand was achieved at the lowest concentration of the dye. The presence of Cu²⁺ performed a higher removal capability compared to other employed metal ions. The 1,2-dioxygenase performed the highest enzymatic activity (up to 488 U/L). The 1,2-dioxygenase and laccase were responsible for the biodegradation and detoxification of SG3. SG3 can be degraded by Hortaea sp. into lower toxicity …