ArticleWorld journal of microbiology & biotechnology2025
Combined application of Sphingobacterium sp. PNL1 and myo-inositol enhanced the remediation ability of BDE-209-contaminated soil by promoting plant growth, reducing oxidative stress, improving photosynthetic efficiency and degrading BDE-209 in soil.
Article in World journal of microbiology & biotechnology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Bioprospecting of the Phylum Bacteroidota for Sustainable Agriculture.Plants (Basel, Switzerland) · 2026Review
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5 authors.
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Abstract
As a polybrominated diphenyl ether (PBDE) flame retardant, BDE-209 has attracted attention because of its extensive accumulation in soil and toxic effect on plant growth. Plant promoting rhizosphere bacteria (PGPR) assisted phytoremediation is widely recognized for removing contaminants from soils. In this study, Sphingobacterium sp. PNL1, isolated from soil, exhibited both tolerance to BDE-209 and plant-growth-promoting (PGP) traits, including production of 1-aminocyclopropane-1-carboxylic acid deaminase, indole-3-acetic acid, ammonia, and siderophore. Notably, the addition of the biological growth factor myo-inositol (MI) enhanced the PGP traits and adhesion capacity of strain PNL1 under BDE-209 stress. Therefore, this study proposed a strategy of combined use of MI and PGPR to assist phytoremediation and highlighted the effect of this combined application on rice seedling growth and soil BDE-209 remediation under BDE-209 stress. The results revealed that the combined application of PNL1 and MI could significantly mitigate the negative effects of BDE-209 on rice, including increased photosynthetic efficiency and reduced oxidative stress, promoting rice seedling growth. Also, the combined use of PNL1 strain and MI enabled the removal rate of soil BDE-209 to reach 64.06%, which was 38.87% higher than that the group without additional addition. Furthermore, the combined treatment could regulate soil enzyme activities (soil urease, sucrase and alkaline phosphatase) and increase the relative abundance of beneficial rhizosphere bacteria (Firmicutes, Myxococcota, etc.), thereby creating a more favorable microenvironment for plant growth. In conclusion, the combined use of PNL1 and MI effectively alleviated BDE-209 stress in rice seedlings and improved the efficiency of soil remediation, providing an eco-friendly method for treating BDE-209 soil contamination.
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