A helpful fungus arms plants against toxic cadmium in soil
Phytoremediation
If a fungal partner can help plants shrug off heavy metal contamination, that same trick could one day help clean up polluted urban lots or protect vegetables grown in soil near old industrial sites.
Cadmium is a toxic metal that can build up in soil and stress out plants, but researchers found that a particular fungus can team up with plant roots to boost the plant's defenses. They discovered that certain genes involved in making antioxidants, one working in the plant's chloroplasts and two working elsewhere in the cell, are key to this fungus-powered protection. Understanding this partnership could help scientists breed or treat plants to survive in metal-contaminated soil.
Key Findings
Ustilago sp. HFJ311, a fungal species, enhances Arabidopsis tolerance to cadmium stress
Plastid-localized G6PD3 and cytosolic G6PD5/6 (glucose-6-phosphate dehydrogenase genes) are implicated in this fungus-mediated protection
These G6PD enzymes likely support antioxidant defense pathways that help plants cope with heavy metal toxicity
chevron_right Technical Summary
A soil fungus called Ustilago HFJ311 helps a common lab plant survive cadmium contamination, and scientists traced this protective effect to specific genes that control antioxidant production inside plant cells.
Species Mentioned
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