Seeds of a salt-sensitive and a salt-tolerant rice cultivar were primed with polymer-coated cerium oxide nanoparticles and grown under salt stress. Priming improved salt tolerance in both cultivars through different physiological routes, analyzed with hormone, metabolome and transcriptome measurements.
Key numbers
- Seeds were primed in 100 mg/L coated nanoceria (or 100 mg/L cerium nitrate) for 48 hours (Methods).
- No cerium concentrations in plant tissues are reported.
Methods (brief)
Seed priming followed by salt stress; photosynthesis, antioxidant enzymes, hormones, metabolomics and transcriptomics in seedlings; three biological replicates.
Evidence fitness
Supports statements that cerium oxide nanoparticles are investigated as seed-priming agrochemicals. It provides no tissue cerium data and no food or human exposure information.
Limitations
Seedling stage; no cerium measurement; no grain analysis.
Related evidence
Update history
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