Which one of the following is a known metallophyte for Fe?

Eichhornia crassipes

Miconia lutescens

Astragalus acemosus

Mentha arvensis

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UPSC Geoscientist – 2023

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Eichhornia crassipes (Water Hyacinth) is well-known for its ability to accumulate various heavy metals, including Iron (Fe), Copper (Cu), Cadmium (Cd), Lead (Pb), Mercury (Hg), Nickel (Ni), and Zinc (Zn), from contaminated water. It is widely studied and used in phytoremediation efforts for metal-contaminated aquatic environments.

– Metallophytes are plants tolerant of or able to accumulate high levels of heavy metals.
– Eichhornia crassipes is a prominent example of a plant used for phytoremediation, including the removal or accumulation of iron.
– Miconia species are often associated with nickel accumulation; Astragalus species with selenium accumulation.

Phytoremediation is a process using plants to remove, detoxify, or immobilize environmental pollutants, including heavy metals. While the term metallophyte is often used for terrestrial plants on metalliferous soils, the concept extends to aquatic plants with similar capabilities in water.

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