Overview
This study profiled the rhizosphere microbial community of the arsenic hyperaccumulator Pteris vittata across a natural soil arsenic contamination gradient and examined its functional role in arsenic phytoremediation. It is upstream mechanism and microbiome evidence on the soil-to-plant transfer of arsenic; it reports no retail food occurrence and is context-only for Heavy Metal Index purposes.
Key numbers
- Arsenic pollution significantly reduced rhizosphere bacterial and fungal diversity (p < 0.05) and shaped community structure.
- With increasing soil arsenic, suitability of the soil microbiome for P. vittata growth declined: pathogenic fungi and parasitic bacteria increased while symbiotic fungi decreased.
- Arsenic-related functional gene abundance (assayed with AsChip) was progressively enriched along the contamination gradient.
Methods (brief)
Field survey of four P. vittata populations along an arsenic gradient plus a pot experiment; rhizosphere bacterial/fungal community composition by amplicon sequencing and arsenic-cycling functional genes by AsChip.
Implications
Certification: Contributes nothing to HMT&C threshold pools. Mechanism/microbiome context on arsenic mobility and microbial mediation; route as exposure/mechanism context to Soil-to-plant transfer of heavy metals, Arsenic, Total, and Agronomic mitigation.
Courses: Shows how soil arsenic load reshapes the rhizosphere microbiome that supports hyperaccumulator phytoremediation.
App: No contamination_profile blocks are touched.
Microbiome: Core WikiBiome federation signpost — rhizosphere community structure and arsenic-cycling genes under an arsenic gradient.
Related evidence
Update history
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