Engineered plants could soak up toxic metals from soil
Zheng K, Weng Y, Zhao R
Phytoremediation
That community garden plot near an old industrial site or busy road might carry lead or cadmium in its soil, and this research points toward future plant varieties bred specifically to pull those metals out safely.
Some plants and microbes can naturally absorb heavy metals like cadmium or lead from contaminated soil, but they don't do it fast enough or in large enough amounts to really clean things up. Scientists are now adding extra genes to these organisms, borrowed from other species, to boost how much metal they can tolerate and soak up. This review looks at how far that gene-editing and gene-adding work has come, and where it might go next for cleaning up polluted land.
Key Findings
Genetic engineering of microorganisms and plants can overcome the natural limits on heavy metal tolerance and accumulation seen in unmodified organisms
Heterologous expression of functional genes via transgenic technology is a primary strategy for boosting bioremediation capacity
Gene editing technologies show potential as a next step for improving heavy metal remediation beyond traditional transgenic approaches
chevron_right Technical Summary
Scientists are engineering the genes of plants and microbes so they can absorb and break down more heavy metal pollution than they could naturally, offering a cheaper, less damaging cleanup method than digging up or chemically treating contaminated soil.
Abstract Preview
Original paper
[Application of genetic engineering technology in heavy metal bioremediation].
Conventional physical and chemical methods for addressing global heavy metal pollution are costly and prone to inducing secondary pollution. Bioremediation technologies, despite their ecological ad...
open_in_new Read full abstractAbstract copyright held by the original publisher.
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