Serendipita indica improves phytoextraction efficiency of cadmium and lead by Sedum alfredii via stress alleviation and enhanced metal translocation.
Zhao J, Li S, Xu K, Fei Q, Qiao Y
Phytoremediation
PubMedSoil contaminated with lead and cadmium from old pipes, industrial sites, or traffic pollution can silently enter your food garden — this fungus-plant partnership offers a natural, low-cost way to clean that soil before you grow anything edible in it.
Researchers found that pairing a helpful soil fungus with a special plant that naturally soaks up heavy metals makes the clean-up process dramatically more effective. The fungus helped the plant grow bigger roots and shoots, absorb more of the toxic metals, and move them from the roots up into the leaves — which can then be cut off and disposed of safely. This means contaminated plots of land could potentially be cleaned up faster and more cheaply using living organisms instead of expensive machinery.
Key Findings
Inoculation with S. indica increased root and shoot dry weights by 16% and 20%, respectively, and nearly doubled root length (up 106%) and root tip count (up 121%).
The fungus raised cadmium translocation from roots to above-ground plant parts by 34% and lead translocation by 15%, improving how much metal can be harvested by cutting the plant.
The fungus protected the plant from oxidative damage caused by metal toxicity, reducing harmful superoxide accumulation and modulating hydrogen peroxide levels.
chevron_right Technical Summary
A beneficial fungus called Serendipita indica helps a metal-accumulating plant clean up soil contaminated with cadmium and lead more effectively, boosting the plant's growth and its ability to pull toxic metals out of the ground and into its above-ground tissues where they can be harvested and removed.
Abstract Preview
Heavy metal co-contamination, particularly by cadmium (Cd) and lead (Pb), poses a severe environmental challenge, threatening ecosystem and human health. This study investigated the symbiotic role ...
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