Raw bacterial sequencing data from rapeseed rhizosphere under elevated CO2 and Pb stress

This dataset contains the raw 16S rRNA gene sequencing data generated from rapeseed (Brassica napus L.) rhizosphere soils exposed to elevated atmospheric CO₂ (550 ppm) and Pb contamination (400 mg/kg). The experiment was designed to investigate how future atmospheric CO₂ enrichment modulates the impacts of heavy metal stress on rhizosphere bacterial communities. Soil samples were collected after the completion of controlled-environment pot experiments and subjected to Illumina high-throughput sequencing. The dataset includes raw FASTQ files, sample metadata, and corresponding environmental information. These data support the analyses of microbial community composition, diversity, and functional responses under combined CO₂ enrichment and Pb stress. The dataset is deposited to facilitate transparency, reproducibility, and reuse by the scientific community.