Researchers have identified native roadside plant Eclipta prostrata (False Daisy) that can take up lead from soil and help in removing metal from environment. The plant was found to have highest lead tolerance. It can accumulate lead at about 12,000 microgram/g of dry weight in root and 7,000 microgram/g of dry weight in its shoot.
Eclipta prostrata (False Daisy)
It is found across Indian subcontinent. It is known ‘Bhringraj’ (Karisalankanni in Tamil). It is medicinal plant used as ‘hair-growth stimulant’ and in many ayurvedic preparations. Tribal people use it antidote for snake bites and treatment of scorpion stings.
Significance of Study
It shows that Eclipta prostrata plant is lead hyperaccumulator i.e. it has suitable biochemical machinery and may be using lead to protect itself from the pests, or other predators without having toxic effects on itself. It can be used bioremediation of lead-contaminated soil.