Colonization of three Sphagneticola species by Funneliformis mosseae under cadmium stress is beneficial to phosphatase activity and nutrient uptake in rhizosphere soil.
Yu Z, Lu R, Zhang Q, Jing Y, Peng C
Phytoremediation
Cadmium quietly enters backyard soils through phosphate fertilizers, and understanding how mycorrhizal fungi naturally buffer plant roots against it could change how restoration gardeners select both plants and fungal inoculants for contaminated urban lots.
Researchers paired a specific root fungus with three daisy relatives — one native, one invasive, and their hybrid — then dosed the soil with cadmium, a toxic heavy metal. The fungus helped all three plants pull in more phosphorus (a key nutrient) and better balance other minerals like calcium, potassium, and zinc, making the plants tougher in contaminated soil. The results suggest that choosing the right fungal partner for the right plant type could turn these daisies into living cleanup crews for polluted ground.
Key Findings
Funneliformis mosseae significantly boosted acid phosphatase activity in rhizosphere soil, substantially increasing phosphorus uptake across all three Sphagneticola species under cadmium stress.
The fungus modulated rhizosphere pH in a species-specific way, but broadly counteracted the acidification that cadmium contamination causes around plant roots.
AMF colonization reshaped whole-plant mineral balance, promoting root accumulation of sodium, magnesium, and calcium while directing potassium to shoots and increasing copper and zinc absorption.
chevron_right Technical Summary
A beneficial soil fungus called Funneliformis mosseae helps three related daisy-family plants tolerate cadmium-polluted soil by boosting phosphorus uptake and balancing mineral absorption — pointing toward a low-tech, living remedy for one of the world's most common heavy-metal contaminants.
Abstract Preview
Soil cadmium (Cd) contamination poses threats to ecosystems and human health, and the plant arbuscular mycorrhizal fungi (AMF) symbiotic system represents a promising green remediation strategy. Ho...
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